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PNY XLR8 CS3140 vs Sandisk Optimus GX PRO 850X

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Product A: PNY

XLR8 CS3140

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B

Product B: Sandisk

Optimus GX PRO 850X

48 of 63 known

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Only differences

APNY XLR8 CS3140

BSandisk Optimus GX PRO 850X

General

4 of 9 differ

Series

XLR8 Gaming1Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 2026Sell sheet title reads PNY XLR8 Gaming CS3140

Optimus GX PRO4Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 2026Maker line name is SANDISK Optimus GX PRO

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

M280CS3140-1TB-RB, M280CS3140-2TB-RB, M280CS3140-4TB-RB, M280CS3140-8TB-RB, M280CS3140HS-1TB-RB, M280CS3140HS-2TB-RB, M280CS3140HS-4TB-RB2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026PNY Part Number rows M280CS3140-1TB-RB, M280CS3140-2TB-RB and M280CS3140-4TB-RB3Maker spec sheet (PDF)1fodiscount.com/ressources/site/document/product/presentation-de-la-gamme-pour-pny-xlr8-cs3140-2to_8119.pdfRead 15 October 2026PNY CS3140 sell sheet, ver. 20-09-22, EU edition mirrored by a French reseller. Part numbers: no heatsink 1TB, 2TB, 4TB and 8TB (M280CS3140-8TB-RB). With heatsink M280CS3140HS-1TB-RB, M280CS3140HS-2TB-RB and M280CS3140HS-4TB-RB

SDSP81100TAN-000E0, SDSP81100TAN, WDS100T2X0E, SDSP81200TAN-000E0, SDSP81200TAN, WDS200T2X0E, SDSP81400TAN-000E0, SDSP81400TAN, WDS400T2X0E, SDSP81800TAN-000E0, SDSP81800TAN, WDS800T2X0E, SDSP81100TAH-000E0, SDSP81100TAH, WDS100T2XHE, SDSP81200TAH-000E0, SDSP81200TAH, WDS200T2XHE, SDSP81400TAH-000E0, SDSP81400TAH, WDS400T2XHE, SDSP81800TAH-000E0, SDSP81800TAH, WDS800T2XHE1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Bare drive models SDSP81100TAN, SDSP81200TAN, SDSP81400TAN and SDSP81800TAN2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-heatsink-ssd.pdfRead 14 October 2026Heatsink models SDSP81100TAH, SDSP81200TAH, SDSP81400TAH and SDSP81800TAH3Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-black-ssd/data-sheet-wd-black-sn850x-nvme-ssd.pdfRead 14 October 2026Earlier WD_BLACK SN850X model numbers: WDS100T2X0E, WDS200T2X0E, WDS400T2X0E, WDS800T2X0E (without heatsink) and WDS100T2XHE, WDS200T2XHE, WDS400T2XHE, WDS800T2XHE (with heatsink). Same hardware under the old name. Sandisk's own page lists the Optimus numbers4Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 2026SKUs SDSP81100TAN-000E0, SDSP81200TAN-000E0, SDSP81400TAN-000E0, SDSP81800TAN-000E0 and SDSP81100TAH-000E0, SDSP81200TAH-000E0, SDSP81400TAH-000E0, SDSP81800TAH-000E0

GTIN / EAN

751492642383, 4718006452506, 751492642390, 4718006452513, 751492648521, 4718006452520, 751492761275, 751492642406, 751492642413, 7514926485382Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026UPC 751492642383 (1TB), 751492642390 (2TB), 751492648521 (4TB). EAN 4718006452506, 4718006452513 and 47180064525203Maker spec sheet (PDF)1fodiscount.com/ressources/site/document/product/presentation-de-la-gamme-pour-pny-xlr8-cs3140-2to_8119.pdfRead 15 October 2026UPC no heatsink: 751492642383, 751492642390, 751492648521 and 751492761275 (8TB). With heatsink: 751492642406 (1TB), 751492642413 (2TB) and 751492648538 (4TB). The sheet gives no EAN

619659231972, 619659231965, 619659231958, 619659231941, 619659232016, 619659232009, 619659231996, 6196592319894Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 2026UPC in the page data: 619659231972 (1TB), 619659231965 (2TB), 619659231958 (4TB), 619659231941 (8TB) without heatsink. 619659232016 (1TB), 619659232009 (2TB), 619659231996 (4TB), 619659231989 (8TB) with heatsink

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

11 January 20217Press releasepny.com/file%20library/company/press%20center/press%20releases/pny_press_release_cs3140_m.2_nvme_gen_4_x_4_ssd_-_01.11.2021.pdfRead 15 October 2026Press release dated January 11th, 2021

9 May 20225Press articlestoragereview.com/news/western-digital-announces-new-wd_black-gaming-ssdsRead 14 October 2026Announced at Western Digital's What's Next event, article dated 9 May 2022, as the WD_BLACK SN850X. Sandisk renamed the drive Optimus GX PRO 850X in 2026 with no technical change

Status

Available7Press releasepny.com/file%20library/company/press%20center/press%20releases/pny_press_release_cs3140_m.2_nvme_gen_4_x_4_ssd_-_01.11.2021.pdfRead 15 October 2026Sell sheet version of November 2025 and the current PNY pages still list the drive

Available4Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 2026Product page lists eight SKUs for sale: four capacities, with and without a heatsink

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

Not available

$289.995Press articlestoragereview.com/news/western-digital-announces-new-wd_black-gaming-ssdsRead 14 October 2026Western Digital's release says 1TB, 2TB and 4TB start at $189.99 (U.S. MSRP). Launch-day coverage and the Tom's Hardware review table list $159.99 for 1TB, so the May figure is not stored6Press articlepcgamesn.com/wd/black-sn850x-release-priceRead 14 October 2026Launches at $159.99 for the starting model (1TB), US7Reviewtomshardware.com/reviews/wd-black-sn850x-ssd-review-back-in-blackRead 14 October 2026Specifications table pricing, US, without and with heatsink: 1TB $159.99 / $179.99, 2TB $289.99 / $309.99, 4TB $699.99. Review text calls it the launch pricing and MSRP. 4TB had no heatsink version at launch9Reviewtomshardware.com/pc-components/ssds/wd-black-sn850x-8tb-ssd-review-the-no-compromise-8tb-championRead 14 October 2026Specifications table pricing for 8TB: $849.99 without and $899.99 with heatsink, US. Review published 16 October 202414Press articleguru3d.com/story/western-digital-releases-8tb-variant-of-wd-black-sn850x-ssd-atRead 14 October 20268TB launch coverage dated 16 July 2024: $849 without a heatsink (WDS800T2X0E) and $899 with a PS5-compatible heatsink (WDS800T2XHE). IT Home reports $849.99 and $50 more for the heatsink

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

From €539.991Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 20262Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-heatsink-ssd.pdfRead 14 October 20263Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-black-ssd/data-sheet-wd-black-sn850x-nvme-ssd.pdfRead 14 October 20264Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 20267Reviewtomshardware.com/reviews/wd-black-sn850x-ssd-review-back-in-blackRead 14 October 20269Reviewtomshardware.com/pc-components/ssds/wd-black-sn850x-8tb-ssd-review-the-no-compromise-8tb-championRead 14 October 202610Reviewtomshardware.com/pc-components/ssds/wd-black-sn850x-8tb-ssd-review-the-no-compromise-8tb-champion/2Read 14 October 202611Reviewkitguru.net/components/ssd-drives/simon-crisp/wd-black-sn850x-with-heatsink-2tb-ssd-review/all/1Read 14 October 202614Press articleguru3d.com/story/western-digital-releases-8tb-variant-of-wd-black-sn850x-ssd-atRead 14 October 202615Press articlechannelpartner.de/article/3902358/western-digital-verdoppelt-kapazitaet-seiner-gaming-ssds.htmlRead 14 October 2026

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

Not available

ColoursiThe maker's own colour names

Not available

Not available

Form factoriPhysical size of the drive. External is any drive in its own case that connects by cable. A drive sold in two M.2 lengths is two products. Xbox expansion card is a card for the storage expansion slot of an Xbox Series console.

M.2 22801Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 2026Specifications: Form Factor M.2 22802Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026

M.2 22801Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Form factor row reads M.2 2280-S3-M for 1TB and 2TB and M.2 2280-D5-M for 4TB and 8TB4Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 2026Form Factor reads M.2 2280 S3-M for 1TB and 2TB and M.2 2280 D5-M for 4TB and 8TB

CapacityiNominal capacity before formatting, in decimal GB. A published 1 TB is 1000 GB. A published 1024GB stays 1024. The marketed capacity is stored, not a raw or usable figure from the same table, such as OWC's 2048 GB total and 1920 GB usable for a 2.0TB drive.

1 TB, 2 TB, 4 TB, 8 TB2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026Footnote: 1 gigabyte = 1 billion bytes3Maker spec sheet (PDF)1fodiscount.com/ressources/site/document/product/presentation-de-la-gamme-pour-pny-xlr8-cs3140-2to_8119.pdfRead 15 October 2026Usable Capacities (IDEMA): 1TB, 2TB, 4TB, 8TB5Maker product pagepny.com/en-eu/cs3140-m2-nvme-ssdRead 15 October 2026PNY EU page selector lists 1TB, 2TB, 4TB and 8TB, with SKU M280CS3140-8TB-RB. The 8TB page shows no specification table

1 TB, 2 TB, 4 TB, 8 TB1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 20261GB = 1 billion bytes and 1TB = 1 trillion bytes. Capacities 1TB, 2TB, 4TB and 8TB4Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 20261TB, 2TB, 4TB, 8TB

Interface

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InterfaceiFastest host connection the drive is rated for. The PCIe generation of an NVMe drive is its own field. A Thunderbolt drive that also works over USB uses its Thunderbolt version.

PCIe NVMe1Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 2026Specifications: Interface NVMe Gen4 x42Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026Interface row reads PCIe Gen4 x4. Key features text says Gen5 x4, which is a typo, since every other row says Gen4

PCIe NVMe1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Interface row reads PCIe 4.0 x4 NVMe 1.4. Footnote 11: backwards compatible with PCIe 3.0 x4, 3.0 x2, 3.0 x1, 2.0 x4, 2.0 x2 and 2.0 x1

PCIe generationiHighest PCIe generation the drive supports, e.g. 5 for PCIe 5.0. NVMe drives only. A drive rated for PCIe 4.0 x4 or 5.0 x2 is 5 with 2 lanes, and the source note names both modes.

41Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 2026NVMe PCIe Gen4 x4 interface2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026

41Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026

PCIe lanesiLanes the drive uses at its highest PCIe generation, usually 4. NVMe drives only.

41Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 2026NVMe PCIe Gen4 x4 interface2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026

41Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026

NVMe versioniVersion of the NVMe specification as published. A revision letter is left out, so 2.0d is stored as 2.0.

1.42Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026NVMe row reads NVMe 1.43Maker spec sheet (PDF)1fodiscount.com/ressources/site/document/product/presentation-de-la-gamme-pour-pny-xlr8-cs3140-2to_8119.pdfRead 15 October 2026NVMe 1.47Press releasepny.com/file%20library/company/press%20center/press%20releases/pny_press_release_cs3140_m.2_nvme_gen_4_x_4_ssd_-_01.11.2021.pdfRead 15 October 2026Supports NVMe 1.4

1.41Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Interface row reads PCIe 4.0 x4 NVMe 1.4

Detachable cableiExternal drives. No means the cable is fixed to the drive.

Not available

Not available

Hardware

4 of 7 differ

ControlleriController maker and model as named by the maker or a review. On an external drive, the controller of the SSD inside, not the USB or Thunderbolt bridge chip. The bridge chip goes in the source note.

Phison E189Reviewtomshardware.com/reviews/pny-xlr8-cs3140-ssd-reviewRead 15 October 2026Spec table lists Phison PS5018-E18 for all capacities10Reviewkitguru.net/components/ssd-drives/simon-crisp/pny-xlr8-cs3140-1tb-ssd-review/all/1Read 15 October 2026Phison PS5018-E18-41, 8-channel, 12nm. Stored as Phison E1811Reviewservethehome.com/pny-cs3140-1tb-nvme-ssd-reviewRead 15 October 2026Review says the drive uses the PS5018 controller, which is a much higher performance controller than the CS3040's. The model name E18 is from Tom's Hardware and KitGuru

Sandisk in-house7Reviewtomshardware.com/reviews/wd-black-sn850x-ssd-review-back-in-blackRead 14 October 2026Table reads WD Proprietary. Text: updated version of the SN850 controller, still eight-channel. Maker names no controller9Reviewtomshardware.com/pc-components/ssds/wd-black-sn850x-8tb-ssd-review-the-no-compromise-8tb-championRead 14 October 2026Controller code A101-000292-B2 on the 8TB and 20-82-20035-V2 on the original. Review says SanDisk technology, an update with a higher bus rate11Reviewkitguru.net/components/ssd-drives/simon-crisp/wd-black-sn850x-with-heatsink-2tb-ssd-review/all/1Read 14 October 2026Review calls it an 8-channel Gen 4 WD controller, probably an updated version of the in-house G2 controller. Part code 20-82-20035-B213Reviewthessdreview.com/our-reviews/nvme/wd_black-sn850x-gen4-8tb-ssd-reviewRead 14 October 2026Review of the 8TB calls it a SanDisk in-house Gen 4 8-channel SSD controller

Flash typeiBits stored in each flash cell. TLC stores three and QLC stores four. A maker can use another flash type in some capacities, so it is per variant.

TLC9Reviewtomshardware.com/reviews/pny-xlr8-cs3140-ssd-reviewRead 15 October 2026TLC in both samples

TLC1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026NAND row reads SANDISK TLC 3D NAND. The datasheet names the flash only as SANDISK BiCS TLC 3D NAND, with no generation

Flash memoryiFlash maker and generation as named by the maker or a review.

Kioxia BiCS5 TLC9Reviewtomshardware.com/reviews/pny-xlr8-cs3140-ssd-reviewRead 15 October 2026Spec table and teardown of the 1TB (review of 22 June 2022): 176-layer Micron TLC (B47R), flash label IA7BG94AYA, four packages. The 25 August 2023 update says the 2TB sample uses 112-Layer Kioxia TLC (BiCS5), and says PNY switched to it from the original 176-layer Micron flash. KitGuru's 1TB of May 2021 had Micron 96-layer flash, so PNY changed the flash more than once. The 2TB value is stored in the base

Sandisk BiCS5 TLC7Reviewtomshardware.com/reviews/wd-black-sn850x-ssd-review-back-in-blackRead 14 October 2026Table reads 112-Layer BiCS5 TLC for 1TB, 2TB and 4TB. Sandisk's datasheet names only BiCS TLC9Reviewtomshardware.com/pc-components/ssds/wd-black-sn850x-8tb-ssd-review-the-no-compromise-8tb-championRead 14 October 20268TB table row reads Kioxia 162-Layer TLC (BiCS6), with 112-layer BiCS5 on 1TB to 4TB. Decoded from the flash marking. The review says BiCS6 may reach the smaller capacities later

Flash layersiStacked layers of the 3D flash, from the maker or a review.

1129Reviewtomshardware.com/reviews/pny-xlr8-cs3140-ssd-reviewRead 15 October 2026176 for the 1TB sample, 112 for the 2TB sample

1127Reviewtomshardware.com/reviews/wd-black-sn850x-ssd-review-back-in-blackRead 14 October 2026112 layers, BiCS5, for 1TB, 2TB and 4TB9Reviewtomshardware.com/pc-components/ssds/wd-black-sn850x-8tb-ssd-review-the-no-compromise-8tb-championRead 14 October 2026162 layers for the 8TB

DRAM cacheiDRAM is a memory chip on the drive. HMB is a drive without DRAM that borrows host memory. None has neither. HMB not stated is a drive without DRAM where no source says whether it borrows host memory. An external drive counts when a source names the cache of the drive inside.

DRAM2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026The sheet highlights DRAM Cache. It gives no size9Reviewtomshardware.com/reviews/pny-xlr8-cs3140-ssd-reviewRead 15 October 20261TB teardown: SK hynix H5AN8G6NCJR-VKC, 1GB of DDR4. The spec table lists DDR4 DRAM for all capacities10Reviewkitguru.net/components/ssd-drives/simon-crisp/pny-xlr8-cs3140-1tb-ssd-review/all/1Read 15 October 2026Cache: 1GB DDR4-2666, an SK hynix H5AN8G6NCJR-VKC chip

DRAM1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026DRAM cache row reads Yes. The datasheet gives no size4Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 2026DRAM Cache: Yes

DRAM cache sizeiSize of the DRAM on the drive. Any DRAM type counts, such as DDR4 or LPDDR4X. Host memory buffer (HMB) is not DRAM on the drive.

Not available

2GB7Reviewtomshardware.com/reviews/wd-black-sn850x-ssd-review-back-in-blackRead 14 October 20262TB sample: DRAM module D9XPG, a 16Gb DDR4 module from Micron with 16-bit width, 2GB of memory. Other capacities not stated11Reviewkitguru.net/components/ssd-drives/simon-crisp/wd-black-sn850x-with-heatsink-2tb-ssd-review/all/1Read 14 October 20262TB sample has a 2GB DDR4 cache chip

Component sidesiWhether chips sit on one or both sides of the board. Thin laptops and some handhelds need single-sided drives. M.2 drives only. The M.2 module code states it: S is single-sided and D is double-sided, e.g. 2280-S3-M or 2280-D5-M.

Not available

Single-sided1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Module code in the form factor row: S means single-sided and D means double-sided. 1TB and 2TB are 2280-S3-M, 4TB and 8TB are 2280-D5-M4Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 2026S3-M for 1TB and 2TB, D5-M for 4TB and 8TB7Reviewtomshardware.com/reviews/wd-black-sn850x-ssd-review-back-in-blackRead 14 October 2026Review calls the drive single-sided (2TB bare sample) and says 1Tb dies were needed to keep the 4TB single-sided. Sandisk's module code reads D5-M (double-sided) for 4TB, which is stored9Reviewtomshardware.com/pc-components/ssds/wd-black-sn850x-8tb-ssd-review-the-no-compromise-8tb-championRead 14 October 2026Review says the 8TB and the 4TB are both double-sided

Performance

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Sequential read (claimed)iMaker's up-to sequential read speed for this capacity. Test conditions are in the source note.

7,500MB/s1Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 2026Up to 7,500MB/s for the 4TB2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026Up to 7,500MB/s for 1TB, 2TB and 4TB. Footnote: speeds may vary with host, settings, OS and applications. PNY's launch release says PNY internal testing on an NVMe PCIe Gen4 x4 host3Maker spec sheet (PDF)1fodiscount.com/ressources/site/document/product/presentation-de-la-gamme-pour-pny-xlr8-cs3140-2to_8119.pdfRead 15 October 2026Max sequential read 7,500 MB/s for 1TB, 2TB and 4TB and 7,000 MB/s for 8TB

7,300MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Up to 7,300 MB/s for 1TB, 2TB and 4TB and 7,200 MB/s for 8TB. Sequential read 1MB at queue depth 8, 1 thread. Internal testing, host not named

Sequential write (claimed)iMaker's up-to sequential write speed for this capacity. Makers usually measure it inside the fast write cache.

6,850MB/s1Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 2026Up to 6,850MB/s for the 4TB2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026Up to 5,650MB/s for 1TB and 6,850MB/s for 2TB and 4TB3Maker spec sheet (PDF)1fodiscount.com/ressources/site/document/product/presentation-de-la-gamme-pour-pny-xlr8-cs3140-2to_8119.pdfRead 15 October 2026Max sequential write 5,650 MB/s for 1TB, 6,850 MB/s for 2TB and 4TB and 5,900 MB/s for 8TB

6,600MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Up to 6,300 MB/s (1TB) and 6,600 MB/s (2TB, 4TB, 8TB). Queue depth 8, 1 thread. Internal testing, so inside the fast write cache

Random 4K read (claimed)iMaker's up-to random read speed with 4 KB blocks. Queue depth and threads are in the source note. The maker's headline claim. Makers test at different queue depths, so compare with care. The queue depth 1 measured fields compare better.

Not available

1,200,000IOPS1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Random read 4KB up to 800K (1TB) and 1.2M (2TB, 4TB, 8TB). Queue depth 32, 16 threads. 1.2M is 1200000

Random 4K write (claimed)iMaker's up-to random write speed with 4 KB blocks. Queue depth and threads are in the source note. The maker's headline claim. Makers test at different queue depths, so compare with care. The queue depth 1 measured fields compare better.

Not available

1,100,000IOPS1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Random write 4KB up to 1.1M (1TB, 2TB, 4TB) and 1.2M (8TB). Queue depth 32, 16 threads

Endurance and reliability

3 of 3 differ

Endurance (TBW)iTerabytes that can be written within the warranty, as the maker rates them.

1,400TB6Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/solid-state-drive-warranty-v10.06.2025.pdfRead 15 October 2026PNY SSD warranty v10.06.2025, TBW table under M.2 NVMe Gen4 x4: CS3140 1TB 700, 2TB 1,400 and 4TB 3,000. The 8TB is not in the table. Tom's Hardware quotes the same figures9Reviewtomshardware.com/reviews/pny-xlr8-cs3140-ssd-reviewRead 15 October 2026Spec table: 700TBW, 1400TBW and 3000TBW. Tom's Hardware says it found them on PNY's Taiwanese site

1,200TB1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026600 TB (1TB), 1,200 TB (2TB), 2,400 TB (4TB), 4,800 TB (8TB). JEDEC client workload JESD219. Warranty is 5 years or the TBW limit, whichever comes first

MTBF or MTTF (claimed)iMean time between failures, or mean time to failure when the maker publishes MTTF. The source note says which. Some makers state it per capacity, so it is per variant.

2,000,000h1Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 2026The page text says 1.6 million hours in the specification block and 2 million hours in the feature text. The sell sheets say 2,000,000 hours and are stored2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026Mean Time Before Failures 2,000,000 Hours. Maker states MTBF3Maker spec sheet (PDF)1fodiscount.com/ressources/site/document/product/presentation-de-la-gamme-pour-pny-xlr8-cs3140-2to_8119.pdfRead 15 October 20262,000,000 Hours

1,750,000h1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Published as MTTF up to 1.75M hours, Telcordia SR-332 stress testing at 25 C. Stored as 1750000

Operating temperatureiMaker's operating range. The storage range is not stored.

Min0Max70°C2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026Operating Temperature 0 C ~ 70 C. Storage -40 C ~ 85 C is not stored3Maker spec sheet (PDF)1fodiscount.com/ressources/site/document/product/presentation-de-la-gamme-pour-pny-xlr8-cs3140-2to_8119.pdfRead 15 October 20260 C ~ 70 C

Min0Max85°C1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 202632 to 185 F (0 to 85 C), as reported by the drive. The non-operating range of -40 to 85 C is not stored

Power

3 of 6 differ

Power while reading (claimed)iMaker's average power during sequential reads, including a figure given at the full read speed. A single average or active figure with no read and write split, such as Corsair's, is stored in both read and write, and the source note says so. A maximum figure, such as Kingston's (MAX) Read, is a peak and is not stored.

Not available

7.5W1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Average Power Read: 7.2 W (1TB), 7.5 W (2TB), 8 W (4TB), 6.7 W (8TB). Footnote 3: IOMeter 1.1.0 during a burst sequential read, moving average over 10 seconds

Power while writing (claimed)iMaker's average power during sequential writes. A single average or active figure with no read and write split is stored in both read and write, and the source note says so. A maximum figure, such as Kingston's (MAX) Write, is a peak and is not stored.

Not available

7W1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Average Power Write: 6.2 W (1TB), 7 W (2TB), 7.2 W (4TB), 8 W (8TB). Same method as read

Max power consumption (claimed)iMaker's peak or maximum power figure. Not the average while reading or writing. Kingston publishes max read and max write power apart. Store the higher one and name both in the source note.

Not available

Not available

Average power in light use (claimed)iMaker's average over a mixed client workload such as MobileMark. Not idle power and not read or write power.

Not available

Not available

Idle power (claimed)iMaker's idle power in the PS3 state with APST on, or the state the maker calls low-power idle. On a SATA drive, Slumber counts as low-power idle. A plain idle figure with no low-power state, often near 1 W, is active idle and is not stored. Samsung's Idle with DIPM on is a SATA link power state, so it counts as low-power idle.

Not available

Not available

Sleep power (claimed)iMaker's power in the deepest sleep state, PS4 or L1.2. On a SATA drive this is DevSleep.

Not available

5mW1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Sleep (PS4) 5 mW on every capacity

Measured

8 of 9 differ

Sequential read (measured)iCrystalDiskMark SEQ1M Q8T1 read result from a reviewer. Host and slot are in the source note. KitGuru's default profile counts as SEQ1M Q8T1.

Not available

7,377MB/s11Reviewkitguru.net/components/ssd-drives/simon-crisp/wd-black-sn850x-with-heatsink-2tb-ssd-review/all/1Read 14 October 20262TB with heatsink sample (WDS200T2XHE), CrystalDiskMark 8.0.4 default profile (NVMe settings), SEQ1M Q8T1 read 7377.06 MB/s. AMD Ryzen 5 3600X, MSI MPG X570 Gaming Edge Wifi, drive wiped with HDDerase v4, 1GiB test size, 5 runs. The result goes in the heatsink 2TB row, which is the tested drive, and in the base as the 2TB result

Sequential write (measured)iCrystalDiskMark SEQ1M Q8T1 write result from a reviewer. Host and slot are in the source note.

Not available

6,688MB/s11Reviewkitguru.net/components/ssd-drives/simon-crisp/wd-black-sn850x-with-heatsink-2tb-ssd-review/all/1Read 14 October 2026SEQ1M Q8T1 write 6687.54 MB/s, same run. The review text quotes 6,696 MB/s with the 0 fill profile, which is not stored

Random 4K read at queue depth 1 (measured)iCrystalDiskMark RND4K Q1T1 read result from a reviewer. Small reads one at a time, close to everyday use. KitGuru's 4K QD1 1 Thread test counts as RND4K Q1T1. A CrystalDiskMark result printed in IOPS is stored as IOPS x 4096 / 1,000,000 MB/s, the way CrystalDiskMark converts.

Not available

86.74MB/s11Reviewkitguru.net/components/ssd-drives/simon-crisp/wd-black-sn850x-with-heatsink-2tb-ssd-review/all/1Read 14 October 2026RND4K Q1T1 read 86.74 MB/s, same default run, read from the CrystalDiskMark screenshot and confirmed in the review text

Random 4K write at queue depth 1 (measured)iCrystalDiskMark RND4K Q1T1 write result from a reviewer. A CrystalDiskMark result printed in IOPS is stored as IOPS x 4096 / 1,000,000 MB/s, the way CrystalDiskMark converts.

Not available

267.88MB/s11Reviewkitguru.net/components/ssd-drives/simon-crisp/wd-black-sn850x-with-heatsink-2tb-ssd-review/all/1Read 14 October 2026RND4K Q1T1 write 267.88 MB/s, same run

Write cache size (measured)iData written at full speed in one long sequential write on an empty drive before the speed drops.

Not available

Not available

Write speed after the cache (measured)iWrite speed in the first state after the fast cache is full, when the drive writes straight to TLC or QLC. Tom's Hardware calls it TLC mode. The slower folding state and the lowest dip are not stored. Only from a long sequential write test.

1,600MB/s9Reviewtomshardware.com/reviews/pny-xlr8-cs3140-ssd-reviewRead 15 October 20262TB sample: pSLC mode for over 30 seconds at up to 6.2 GB/s, then drops to around 1.6 GB/s in TLC mode. Iometer sequential write for 15 minutes, drive prefilled to 50%, Intel Core i9-11900K, ASRock Z590 Taichi, active cooling unless noted

Not available

3DMark Storage BenchmarkiOverall score measured by a reviewer. Host and slot are in the source note. From StorageReview only. Tom's Hardware scores the same drive about 30 percent higher, so other reviewers are not mixed in.

Not available

3,962points12Reviewstoragereview.com/review/sandisk-wd_black-sn8100-review-elite-performance-in-a-gen5-ssdRead 14 October 2026WD SN850X 2TB overall score 3,962 in the 3DMark Storage table of the SN8100 review dated 13 May 2025. AMD Ryzen 7 9800X3D, Asus ROG Crosshair X870E Hero, G.Skill DDR5-6000, RTX 4090, Windows 11 Pro. The review does not say if the sample had a heatsink, so it is placed in the bare 2TB row

Highest temperature under load (measured)iHighest drive sensor reading in a sustained write test of 10 minutes or more, on the bare drive unless the row is a heatsink version. Short benchmark runs do not count. Heatsink, airflow and room temperature go in the source note.

Not available

85°C8Reviewtomshardware.com/reviews/wd-black-sn850x-ssd-review-back-in-black/3Read 14 October 20262TB, bare drive, tested without a heatsink or extra airflow. Writing the entire cache (15-minute Iometer sequential write) got the S.M.A.R.T. reported temperature into a throttling range between 78 and 85 C, so the top of the range is stored. Idle was 48 C. Intel Core i9-11900K, ASRock Z590 Taichi, Windows 10 Pro, drive prefilled to 50% and tested as a secondary device10Reviewtomshardware.com/pc-components/ssds/wd-black-sn850x-8tb-ssd-review-the-no-compromise-8tb-champion/2Read 14 October 20268TB, bare non-heatsink drive: maximum 68 C on the primary composite sensor, about 22 C ambient, active cooling unless noted. Intel Core i9-12900K, Asus ROG Maximus Z790 Hero, Windows 11 Pro, drive prefilled to 50%, tested as a secondary drive. Stored in the 8TB row

Idle power (measured)iReviewer's idle reading. Power-saving settings such as ASPM are in the source note. A value read from a chart image counts when the source note says "read from chart".

953mW9Reviewtomshardware.com/reviews/pny-xlr8-cs3140-ssd-reviewRead 15 October 2026Read from chart. Quarch PPM idle power with ASPM and LPM disabled: 953 mW for the 2TB sample (update of 25 August 2023) and 781 mW for the 1TB sample (review of 22 June 2022). Test benches as in the review notes

1,124mW8Reviewtomshardware.com/reviews/wd-black-sn850x-ssd-review-back-in-black/3Read 14 October 20262TB, bare. Quarch HD Programmable Power Module, idle power with ASPM/LPM disabled: 1,124 mW with Game Mode off and 1,052 mW with Game Mode on. Game Mode off is stored. Value printed on the chart. The review also says the cache is almost 600 GB and the post-cache speed is below 2,000 MB/s on a chart, which are not stored as exact numbers10Reviewtomshardware.com/pc-components/ssds/wd-black-sn850x-8tb-ssd-review-the-no-compromise-8tb-champion/2Read 14 October 20268TB, Quarch idle power with ASPM/LPM disabled: 1,085 mW, printed on the chart. Stored in the 8TB row

Cooling and build

1 of 4 differ

HeatsinkiVersions sold. The base lists every version and each variant row lists its own. A water block or a cooler with a fan counts as a heatsink. A thermal pad or label alone is bare. A heatsink in the box that the buyer fits, as on the XPG MARS 980 BLADE, counts as with heatsink.

Without heatsink, With heatsink3Maker spec sheet (PDF)1fodiscount.com/ressources/site/document/product/presentation-de-la-gamme-pour-pny-xlr8-cs3140-2to_8119.pdfRead 15 October 2026Offered with an optional extruded aluminum heatsink. Both versions are listed4Maker product pagepny.com/cs3140-m2-nvme-ssd-with-heatsinkRead 15 October 2026Page for the CS3140 with Heatsink: integrated extruded aluminum heatsink. Capacity selector 1TB, 2TB and 4TB7Press releasepny.com/file%20library/company/press%20center/press%20releases/pny_press_release_cs3140_m.2_nvme_gen_4_x_4_ssd_-_01.11.2021.pdfRead 15 October 2026Two versions: a non-heatsink version and a version with a 45-gram extruded aluminum heatsink

Without heatsink, With heatsink1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026This datasheet covers the bare drives. Heatsink versions have their own datasheet2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-heatsink-ssd.pdfRead 14 October 2026Datasheet title reads SANDISK Optimus GX PRO 850X with Heatsink3Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-black-ssd/data-sheet-wd-black-sn850x-nvme-ssd.pdfRead 14 October 2026All capacities have an optional heatsink version

RGB lightingiAny version sold has lighting the user can set. A status LED alone does not count. Leave it out when no version has lighting. The Heatsink rows show which version has it.

Not available

Yes3Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-black-ssd/data-sheet-wd-black-sn850x-nvme-ssd.pdfRead 14 October 2026Dashboard text: customize your RGB lighting (heatsink versions only). The Optimus datasheets do not mention RGB7Reviewtomshardware.com/reviews/wd-black-sn850x-ssd-review-back-in-blackRead 14 October 2026Optional heatsink with RGB for the 1TB and 2TB models

Dust and water ratingiPublished IP rating of an external drive.

Not available

Not available

Drop test heightiMaker-published tested height. Surface and conditions are in the source note.

Not available

Not available

Security and software

2 of 2 differ

SecurityiFeatures the maker names for the drive. Encryption done by host software does not count. ATA Security passthrough counts as password protection.

AES 256-bit hardware encryption, TCG Pyrite (no encryption)1Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 2026Features: Supports TCG Pyrite, the security software designed for personal client computing. AES256 comes from the sell sheet2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026Encryption row reads AES256. The sheet does not say hardware, but lists it as a property of the drive. Tom's Hardware says the drive supports 256-bit AES encryption9Reviewtomshardware.com/reviews/pny-xlr8-cs3140-ssd-reviewRead 15 October 2026Spec table Security row reads AES256 for all capacities

TCG Opal 2.01Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Security row reads TCG OPAL 2.01. Footnote: requires motherboard BIOS or third-party software to enable

Software

PCIe SSD Toolbox9Reviewtomshardware.com/reviews/pny-xlr8-cs3140-ssd-reviewRead 15 October 2026PNY offers a PCIe SSD toolbox download for firmware updates, SMART readings and secure erase

SanDisk Dashboard1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Featured software row reads SANDISK Dashboard (Windows only) and Acronis True Image for SANDISK software

Compatibility

1 of 1 differ

PlatformsiPlatforms the maker names for this drive. A PS5 needs a heatsink on an internal drive. PC is for a maker that writes Client PCs or PC without naming an operating system. Handheld PCs go in Other with a source note.

PC (no OS named), PS51Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 2026Features: designed for M.2 2280 compatible desktops, laptops and handheld gaming devices. PNY's PS5 page lists the CS3140 non-heatsink drive and says a heatsink must be added, with PS5 software 21.02-04.00.00 or higher. The bare drive is the one PNY lists for PS58Maker product pagepny.com/gaming/learn-more/accelerate-your-ps5-gamingRead 15 October 2026Lists the CS3140 non-heatsink SSD for PS5, compatible with the optical and digital PS5, with PS5 software 21.02-04.00.00 or higher. The user adds a heatsink

Windows, PS52Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-heatsink-ssd.pdfRead 14 October 2026The heatsink text reads compatible with PS5 and PS5 Pro consoles. The PS5 line is for the heatsink models only, the bare drive is listed for Windows3Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-black-ssd/data-sheet-wd-black-sn850x-nvme-ssd.pdfRead 14 October 2026System compatibility row reads Windows 10+ and PlayStation 5 (heatsink model only)4Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 2026Compatibility reads Windows 10+, PCIe 4.0 x4 interface and M.2 2280 port. The heatsink text reads compatible with PS5 and PS5 Pro

Dimensions and weight

2 of 2 differ

DimensionsiLength is the long side. Height is the thickness, including a fitted heatsink. As the maker publishes it. A maximum counts. Length is the long side even when the maker lists the width first.

Length80Width22Height4mm(3.1 × 0.9 × 0.2 in)2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026Part Dimensions 22 x 80 x 4mm for the drive without heatsink. Stored as L x W x H. The EU sheet calls 4 mm a maximum3Maker spec sheet (PDF)1fodiscount.com/ressources/site/document/product/presentation-de-la-gamme-pour-pny-xlr8-cs3140-2to_8119.pdfRead 15 October 2026Dimensions (L x W x H): no heatsink 22 x 80 x 4 mm (Max), with heatsink 22.8 x 80.4 x 20.5 mm

Length80Width22Height2.38mm(3.1 × 0.9 × 0.1 in)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Bare drive, length 80 mm and width 22 mm for all capacities. Height 2.38 mm for 1TB and 2TB, 3.88 mm for 4TB and 8TB. Footnote 8: length and width vary by +/-0.15 mm. Base is the 2TB bare drive2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-heatsink-ssd.pdfRead 14 October 2026Heatsink models, rounded: 80 x 23 x 8.90 mm for 1TB and 2TB, 80 x 24 x 10.31 mm for 4TB and 8TB. The WD_BLACK SN850X datasheet gives 23.40 and 24.46 mm widths, which are stored3Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-black-ssd/data-sheet-wd-black-sn850x-nvme-ssd.pdfRead 14 October 2026Heatsink models: 80 +/-0.20 x 23.40 +/-0.40 x 8.90 +/-0.40 mm for 1TB and 2TB, 80 +/-0.20 x 24.46 +/-0.48 x 10.31 +/-0.50 mm for 4TB and 8TB. Bare drives 80 x 22 x 2.38 mm (1TB, 2TB) and 3.88 mm (4TB, 8TB)

WeightiDrive alone, with a heatsink when it is sold fitted. No cable and no packaging. As the maker publishes it. A maximum counts. Not a measured weight.

6.6g(0.2 oz)3Maker spec sheet (PDF)1fodiscount.com/ressources/site/document/product/presentation-de-la-gamme-pour-pny-xlr8-cs3140-2to_8119.pdfRead 15 October 2026Weight: no heatsink 6.6g, with heatsink 45g. PNY's launch release and KitGuru describe the heatsink itself as 45 g, and KitGuru lists the heatsink drive at 47 g, so the 45 g may be the heatsink alone. Stored as the maker publishes it

7.5g(0.3 oz)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 20267.5 g for 1TB and 2TB and 8.6 g for 4TB and 8TB. Footnote 8: weight varies by +/-1 g2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-heatsink-ssd.pdfRead 14 October 202624 g for 1TB and 2TB and 30.4 g for 4TB and 8TB, heatsink models3Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-black-ssd/data-sheet-wd-black-sn850x-nvme-ssd.pdfRead 14 October 2026Heatsink models 24 g +/-3 g (1TB, 2TB) and 30.4 g +/-3 g (4TB, 8TB). Bare 7.5 g +/-1 g and 8.6 g +/-1 g

In the box

1 of 2 differ

In the box

Not available

SANDISK Optimus GX PRO 850X NVMe SSD4Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 2026In The Box reads SANDISK Optimus GX PRO 850X NVMe SSD, the same on every SKU

Cables includediCables supplied with an external drive.

Not available

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Links

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Product page

www.pny.com/cs3140-m-2-nvme-ssd1Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 2026PNY US page of the CS3140 4TB. Capacity selector 1TB, 2TB and 4TB

www.sandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssd4Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850x-internal-nvme-ssdRead 14 October 2026

Spec sheet

www.pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdf2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 2026PNY XLR8 Gaming CS3140 sell sheet, ver. 11-17-25, for 1TB, 2TB and 4TB

documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdf1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 2026Optimus datasheet, product page link named SANDISK Optimus GX PRO 850X data sheet

Manual

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EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

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Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

5years1Maker product pagepny.com/cs3140-m-2-nvme-ssdRead 15 October 20265-Year Limited Warranty or TBW, whichever comes first per PNY's SSD warranty document. No registration is needed2Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/xlr8-ssd-cs3140-sell-sheet.pdfRead 15 October 20265-YEAR LIMITED WARRANTY OR TBW. Warranty depends on region, see the PNY site6Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/solid-state-drive-warranty-v10.06.2025.pdfRead 15 October 2026CS3140, 5 Years, or until the TBW is reached7Press releasepny.com/file%20library/company/press%20center/press%20releases/pny_press_release_cs3140_m.2_nvme_gen_4_x_4_ssd_-_01.11.2021.pdfRead 15 October 2026Warranty: 5 Year

5years1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850x-internal-ssd.pdfRead 14 October 20265 years or the maximum endurance (TBW) limit, whichever occurs first. The datasheet is global and names no market

Both are also in the API. Back to all SSDs.