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Sandisk Optimus 5100 vs Sandisk Optimus GX PRO 8100

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Product A: Sandisk

Optimus 5100

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B

Product B: Sandisk

Optimus GX PRO 8100

47 of 63 known

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Only differences

ASandisk Optimus 5100

BSandisk Optimus GX PRO 8100

General

5 of 9 differ

Series

Optimus2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-5100-internal-nvme-ssdRead 14 October 2026Maker line name is SANDISK Optimus, model 5100

Optimus GX PRO3Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-8100-internal-nvme-ssdRead 14 October 2026Maker line name is SANDISK Optimus GX PRO, model 8100

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

SDSP51500GAN, SDSP51500GAN-000E0, WDS500G5B0E-00CPE0, SDSP51100TAN, SDSP51100TAN-000E0, WDS100T5B0E-00CPE0, SDSP51200TAN, SDSP51200TAN-000E0, WDS200T5B0E-00CPE0, SDSP51400TAN, SDSP51400TAN-000E0, WDS400T5B0E-00CPE01Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Product specifications table: SDSP51500GAN, SDSP51100TAN, SDSP51200TAN and SDSP51400TAN for 500GB, 1TB, 2TB and 4TB. The -000E0 suffix is on the product page2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-5100-internal-nvme-ssdRead 14 October 2026Specifications tables list SDSP51500GAN-000E0, SDSP51100TAN-000E0, SDSP51200TAN-000E0 and SDSP51400TAN-000E0. The WDS legacy codes come from Tom's Hardware3Press articletomshardware.com/pc-components/ssds/sandisk-launches-wd-blue-sn5100-ssd-touting-30-percent-higher-performance-than-predecessor-pcie-4-0-dram-less-drives-start-at-usd54Read 14 October 2026The WD Blue SN5100 part numbers are in Tom's Hardware's review table4Reviewtomshardware.com/pc-components/ssds/sandisk-wd-blue-sn5100-2tb-ssd-reviewRead 14 October 2026Part numbers WDS500G5B0E-00CPE0, WDS100T5B0E-00CPE0, WDS200T5B0E-00CPE0 and WDS400T5B0E-00CPE0

SDSP82100TAN, SDSP82100TAN-000E0, WDS100T1X0M-00CMT0, SDSP82200TAN, SDSP82200TAN-000E0, WDS200T1X0M-00CMT0, SDSP82400TAN, SDSP82400TAN-000E0, WDS400T1X0M-00CMT0, SDSP82800TAN, SDSP82800TAN-000E0, WDS800T1X0M-00CMT0, SDSP82100TAH, SDSP82100TAH-000E0, WDS100T1XHM-00CMT0, SDSP82200TAH, SDSP82200TAH-000E0, WDS200T1XHM-00CMT0, SDSP82400TAH, SDSP82400TAH-000E0, WDS400T1XHM-00CMT0, SDSP82800TAH, SDSP82800TAH-000E0, WDS800T1XHM-00CMT01Maker 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-8100-internal-nvme-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-8100-heatsink-internal-nvme-ssd.pdfRead 14 October 20263Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-8100-internal-nvme-ssdRead 14 October 2026SKU codes carry a -000E0 suffix4Maker 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-sn8100-nvme-ssd.pdfRead 14 October 2026WD_BLACK SN8100 datasheet, September 2025. Model numbers WDS100T1X0M-00CMT0, WDS200T1X0M-00CMT0, WDS400T1X0M-00CMT0 and WDS800T1X0M-00CMT0. Same speeds, IOPS, power, TBW, MTTF, 0 to 85 C range, TCG Opal 2.02 and size as the Optimus datasheet, which is why the legacy codes are listed on the same rows5Maker 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-sn8100-heatsink-nvme-ssd.pdfRead 14 October 2026WD_BLACK SN8100 with heatsink datasheet, September 2025. Model numbers WDS100T1XHM-00CMT0, WDS200T1XHM-00CMT0, WDS400T1XHM-00CMT0 and WDS800T1XHM-00CMT09Reviewtomshardware.com/pc-components/ssds/sandisk-wd-black-sn8100-2tb-ssd-reviewRead 14 October 2026Part numbers WDS100T1X0M-00CMT0 and WDS100T1XHM-00CMT0 for 1TB, with the 2TB and 4TB codes in the same table. X0M is bare and XHM is heatsink

GTIN / EAN

619659232306, 619659232290, 619659232283, 6196592322762Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-5100-internal-nvme-ssdRead 14 October 2026UPCs in the product page data: 619659232306 (500GB), 619659232290 (1TB), 619659232283 (2TB) and 619659232276 (4TB)

619659230999, 619659230982, 619659230975, 619659230968, 619659231934, 619659231927, 619659231019, 6196592310023Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-8100-internal-nvme-ssdRead 14 October 2026UPC values in the page data per SKU. Bare 8TB 619659230968, 4TB 619659230975, 2TB 619659230982, 1TB 619659230999. Heatsink 1TB 619659231934, 2TB 619659231927, 4TB 619659231019, 8TB 619659231002

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

27 August 20253Press articletomshardware.com/pc-components/ssds/sandisk-launches-wd-blue-sn5100-ssd-touting-30-percent-higher-performance-than-predecessor-pcie-4-0-dram-less-drives-start-at-usd54Read 14 October 2026Launch article published 27 August 2025: Sandisk announced the WD Blue SN5100, successor to the SN5000

May 20257Press articleblocksandfiles.com/2025/05/14/sandisk-supplies-fastest-gumstick-ssdRead 14 October 2026Dated 14 May 2025 and reports the SN8100 as just launched. Other coverage dates the launch to 13 May 2025

Status

Available2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-5100-internal-nvme-ssdRead 14 October 2026Product page lists the four capacities. The store shows a back-in-stock notification for each capacity, so the maker store is out of stock. Retailers list the drive

Available3Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-8100-internal-nvme-ssdRead 14 October 2026Listed for sale on sandisk.com in all 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.

$149.993Press articletomshardware.com/pc-components/ssds/sandisk-launches-wd-blue-sn5100-ssd-touting-30-percent-higher-performance-than-predecessor-pcie-4-0-dram-less-drives-start-at-usd54Read 14 October 2026MSRP table in the launch article: 500GB $54.99, 1TB $79.99, 2TB $149.99 and 4TB $299.99. US prices before tax, stated as WD Blue SN5100 pricing8Reviewservethehome.com/sandisk-wd-blue-sn5100-2tb-pcie-gen4-nvme-ssd-review/3Read 14 October 2026Launching on 27 August 2025 at an MSRP of $150 for the 2TB, which matches the $149.99 in the launch article

$279.997Press articleblocksandfiles.com/2025/05/14/sandisk-supplies-fastest-gumstick-ssdRead 14 October 2026SN8100 US MSRP 1TB $179.99, 2TB $279.99, 4TB $549.99, available at sandisk.com and select retailers. The heatsink version followed in the fall for $20 extra. The 8TB came later with no MSRP found8Reviewclub386.comRead 14 October 2026WD_Black SN8100 review lists $179.99, $279.99 and $549.99 for 1TB, 2TB and 4TB. It also says the 2TB runs at 55 C under load under motherboard heatsinks, a different test from the KitGuru value stored9Reviewtomshardware.com/pc-components/ssds/sandisk-wd-black-sn8100-2tb-ssd-reviewRead 14 October 2026Review text gives $179.99, $279.99 and $549.99 with $20 more for the heatsink. Its table shows $599.99 for the 4TB heatsink version, which disagrees with $20, so no 4TB heatsink price is stored

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

Not available

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

Black3Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-8100-internal-nvme-ssdRead 14 October 2026

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 spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Form factor row reads M.2 2280

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-8100-internal-nvme-ssd.pdfRead 14 October 2026

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.

500 GB, 1 TB, 2 TB, 4 TB1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026500GB, 1TB, 2TB and 4TB. 1TB is 1 trillion bytes

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-8100-internal-nvme-ssd.pdfRead 14 October 2026

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 spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026PCIe 4.0 x4, NVMe. Footnote 10 says it is backwards compatible with PCIe 3.0 x4, 3.0 x2, 3.0 x1, 2.0 x4, 2.0 x2 and 2.0 x1. The datasheet gives no NVMe version

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-8100-internal-nvme-ssd.pdfRead 14 October 2026Footnote says it is backwards compatible with PCIe 4.0 x4, 4.0 x2, 3.0 x4 and lower

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 spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026

51Maker 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-8100-internal-nvme-ssd.pdfRead 14 October 2026

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

41Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 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-8100-internal-nvme-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.

2.04Reviewtomshardware.com/pc-components/ssds/sandisk-wd-blue-sn5100-2tb-ssd-reviewRead 14 October 2026Spec table reads PCIe 4.0 x4 NVMe 2.0 on all capacities7Reviewservethehome.com/sandisk-wd-blue-sn5100-2tb-pcie-gen4-nvme-ssd-reviewRead 14 October 2026CrystalDiskInfo confirms PCIe 4.0 x4 speeds using NVMe 2.09Reviewstoragereview.comRead 14 October 2026Specification table reads NVMe 2.0d. Tom's Hardware and ServeTheHome read NVMe 2.0, which is stored

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-8100-internal-nvme-ssd.pdfRead 14 October 2026PCIe 5.0 x4 NVMe 2.0

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

Not available

Not available

Hardware

5 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.

Sandisk Polaris 34Reviewtomshardware.com/pc-components/ssds/sandisk-wd-blue-sn5100-2tb-ssd-reviewRead 14 October 2026Spec table reads Sandisk Proprietary and does not name the model. PCGH names it Polaris 3, which is stored10Press articlepcgameshardware.de/SSD-Hardware-255552/News/Sandisk-SN5100-PCIe-4-NVMe-1480772Read 14 October 2026PCGH reads that the drive combines BiCS8 QLC NAND with the Sandisk Polaris 3 controller. The maker does not name the controller. Tom's Hardware reads Sandisk proprietary, so no source contradicts it

Silicon Motion SM25089Reviewtomshardware.com/pc-components/ssds/sandisk-wd-black-sn8100-2tb-ssd-reviewRead 14 October 2026Spec table: Silicon Motion SM2508 on all capacities11Reviewkitguru.net/components/ssd-drives/simon-crisp/sandisk-wd_black-sn8100-2tb-gen-5-ssd-reviewRead 14 October 2026SM2508-based controller with Sandisk in charge of firmware and features

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.

QLC1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026NAND row reads SANDISK QLC 3D CBA NAND and the text says 8th generation SANDISK BiCS QLC 3D CBA NAND7Reviewservethehome.com/sandisk-wd-blue-sn5100-2tb-pcie-gen4-nvme-ssd-reviewRead 14 October 2026Sandisk QLC NAND, the first Blue drive with QLC at every capacity

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-8100-internal-nvme-ssd.pdfRead 14 October 2026

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

Sandisk BiCS8 QLC1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 20268th generation SANDISK BiCS QLC 3D CBA NAND. The datasheet gives no layer count4Reviewtomshardware.com/pc-components/ssds/sandisk-wd-blue-sn5100-2tb-ssd-reviewRead 14 October 2026Same spec table row

Sandisk BiCS8 TLC9Reviewtomshardware.com/pc-components/ssds/sandisk-wd-black-sn8100-2tb-ssd-reviewRead 14 October 2026Spec table reads Kioxia 218-Layer BiCS8. The maker calls it SANDISK BiCS TLC 3D CBA NAND, 8th generation, so the maker's name is stored

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

2184Reviewtomshardware.com/pc-components/ssds/sandisk-wd-blue-sn5100-2tb-ssd-reviewRead 14 October 2026Spec table reads Sandisk 218-Layer BiCS8 QLC

2189Reviewtomshardware.com/pc-components/ssds/sandisk-wd-black-sn8100-2tb-ssd-reviewRead 14 October 202611Reviewkitguru.net/components/ssd-drives/simon-crisp/sandisk-wd_black-sn8100-2tb-gen-5-ssd-reviewRead 14 October 2026Sandisk BiCS8 218-layer TLC 3D

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.

None, uses host memory (HMB)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026DRAM cache row reads Host Memory Buffer. SLC cache row reads SANDISK nCache 4.04Reviewtomshardware.com/pc-components/ssds/sandisk-wd-blue-sn5100-2tb-ssd-reviewRead 14 October 2026Spec table lists N/A (HMB) on all capacities7Reviewservethehome.com/sandisk-wd-blue-sn5100-2tb-pcie-gen4-nvme-ssd-reviewRead 14 October 2026No DRAM cache9Reviewstoragereview.comRead 14 October 2026DRAM-less, Host Memory Buffer

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-8100-internal-nvme-ssd.pdfRead 14 October 2026DRAM cache: Yes. The datasheet gives no size or type9Reviewtomshardware.com/pc-components/ssds/sandisk-wd-black-sn8100-2tb-ssd-reviewRead 14 October 2026Spec table lists DDR4 DRAM on all capacities

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

2GB11Reviewkitguru.net/components/ssd-drives/simon-crisp/sandisk-wd_black-sn8100-2tb-gen-5-ssd-reviewRead 14 October 20262GB cache listed for the 2TB bare drive KitGuru tested. No size found for other capacities or for the heatsink version

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.

Single-sided4Reviewtomshardware.com/pc-components/ssds/sandisk-wd-blue-sn5100-2tb-ssd-reviewRead 14 October 2026Spec table lists M.2 2280 (Single-sided) for every capacity. The review says the drive has a single NAND flash chip7Reviewservethehome.com/sandisk-wd-blue-sn5100-2tb-pcie-gen4-nvme-ssd-reviewRead 14 October 2026The 2TB comes in a single-sided M.2 2280 form factor with one NAND package9Reviewstoragereview.comRead 14 October 2026Specification table reads form factor M.2 2280-S3-M, where S is single-sided

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-8100-internal-nvme-ssd.pdfRead 14 October 2026Form factor reads M.2 2280-S3-M for 1TB to 4TB and M.2 2280-D5-M for 8TB. In the M.2 module naming S is single-sided and D is double-sided9Reviewtomshardware.com/pc-components/ssds/sandisk-wd-black-sn8100-2tb-ssd-reviewRead 14 October 2026Review says the drive is single-sided at all launch capacities of 1TB, 2TB and 4TB

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.

7,100MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Sequential read 1MB at queue depth 8, 1 thread, up to. 6,600, 7,100, 7,100 and 6,900 MB/s for 500GB, 1TB, 2TB and 4TB. Based on internal testing, host not named

14,900MB/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-8100-internal-nvme-ssd.pdfRead 14 October 2026Product specifications table, bare drive. Sequential 1MB at queue depth 8, 1 thread, up to. Based on 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.

6,700MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Sequential write 1MB, same settings. 5,600, 6,700, 6,700 and 6,700 MB/s

14,000MB/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-8100-internal-nvme-ssd.pdfRead 14 October 202611,000 MB/s for 1TB, 14,000 for 2TB and 4TB, 13,200 for 8TB

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.

1,000,000IOPS1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Random 4KB at queue depth 32, 16 threads, up to. 660K, 1M, 1M and 900K IOPS

2,300,000IOPS1Maker 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-8100-internal-nvme-ssd.pdfRead 14 October 2026Random 4KB at queue depth 32, 16 threads, up to. 1.6M, 2.3M, 2.3M and 2.2M IOPS by capacity

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.

1,300,000IOPS1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 20261.1M, 1.3M, 1.3M and 1.1M IOPS, same test settings

2,400,000IOPS1Maker 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-8100-internal-nvme-ssd.pdfRead 14 October 20262.4M IOPS at every capacity, same test settings

Endurance and reliability

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

900TB1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026300, 600, 900 and 1,200 TBW, JEDEC client workload JESD219. Warranty is 5 years or the TBW, whichever comes first

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-8100-internal-nvme-ssd.pdfRead 14 October 2026600, 1,200, 2,400 and 4,800 TBW by capacity, JEDEC client workload JESD219. Warranty is 5 years or the TBW, 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.

1,750,000h1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Published as MTTF up to 1.75M hours from Telcordia SR-332 testing at 25 C. It is not an MTBF

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-8100-internal-nvme-ssd.pdfRead 14 October 2026Published as MTTF up to 1.75M hours, from internal Telcordia SR-332 stress testing at 25 C. It is not an MTBF

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

Min0Max85°C1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 20260 to 85 C as reported by the drive. The non-operating range is not stored

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-8100-internal-nvme-ssd.pdfRead 14 October 20260 to 85 C as reported by the drive. The non-operating range is not stored

Power

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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.

4.1W1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Average power read, IOMeter 1.1.0 burst sequential read, 10 second moving average. 3.8, 3.9, 4.1 and 4.3 W by capacity

6.4W1Maker 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-8100-internal-nvme-ssd.pdfRead 14 October 2026Average active power read, IOMeter 1.1.0 burst sequential read, 10 second moving average. 6.2, 6.4, 6.5 and 7.1 W by capacity. KitGuru and Club386 quote 6.5 W for the 2TB, the datasheet says 6.4 W

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.

4.1W1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Average power write, same method. 3.8, 3.9, 4.1 and 4.3 W by capacity

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-8100-internal-nvme-ssd.pdfRead 14 October 2026Average active power write, same method. 6.1, 7.0, 7.0 and 7.3 W by capacity

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.

4mW1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Row reads Idle (Sleep): 4 mW for 500GB to 2TB and 4.5 mW for 4TB. At 4 mW the value is a deep sleep state, so it is stored as sleep power. The datasheet gives no active idle figure

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-8100-internal-nvme-ssd.pdfRead 14 October 2026Sleep (PS4), 5 mW at every capacity. The datasheet lists no idle figure

Measured

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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.

6,999MB/s6Reviewservethehome.com/sandisk-wd-blue-sn5100-2tb-pcie-gen4-nvme-ssd-review/2Read 14 October 20262TB, CrystalDiskMark 8.0.4 x64, 1GiB test size, five runs, SEQ1M Q8T1 read 6,998.65 MB/s. The screenshot shows the drive as C: with 64% used (1193 of 1863 GiB). Read from the CrystalDiskMark screenshot. AMD Ryzen 9 7900X on MSI MAG X670E Tomahawk, M.2_1 slot with PCIe 5.0 x4

14,937MB/s12Reviewkitguru.net/components/ssd-drives/simon-crisp/sandisk-wd_black-sn8100-2tb-gen-5-ssd-review/4Read 14 October 20262TB, CrystalDiskMark 8.0.5 default test, read 14,937.44 MB/s. The text does not name SEQ1M Q8T1, which is the first sequential row of the default profile. AMD Ryzen 7 7700X, Gigabyte X670E Aorus Xtreme, drive under the board heatsink, drive wiped with HDDerase v4, five runs per test, firmware 810YRC03

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

6,589MB/s6Reviewservethehome.com/sandisk-wd-blue-sn5100-2tb-pcie-gen4-nvme-ssd-review/2Read 14 October 2026SEQ1M Q8T1 write 6,589.47 MB/s, same run

14,103MB/s12Reviewkitguru.net/components/ssd-drives/simon-crisp/sandisk-wd_black-sn8100-2tb-gen-5-ssd-review/4Read 14 October 202614,103.28 MB/s, same default test

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.

73.69MB/s6Reviewservethehome.com/sandisk-wd-blue-sn5100-2tb-pcie-gen4-nvme-ssd-review/2Read 14 October 2026RND4K Q1T1 read 73.69 MB/s, same screenshot

124.49MB/s12Reviewkitguru.net/components/ssd-drives/simon-crisp/sandisk-wd_black-sn8100-2tb-gen-5-ssd-review/4Read 14 October 2026CrystalDiskMark 8 4K QD1 1 Thread test, read 124.49 MB/s

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.

304.4MB/s6Reviewservethehome.com/sandisk-wd-blue-sn5100-2tb-pcie-gen4-nvme-ssd-review/2Read 14 October 2026RND4K Q1T1 write 304.40 MB/s, same screenshot

339.64MB/s12Reviewkitguru.net/components/ssd-drives/simon-crisp/sandisk-wd_black-sn8100-2tb-gen-5-ssd-review/4Read 14 October 2026Same test, write 339.64 MB/s

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

500GB5Reviewtomshardware.com/pc-components/ssds/sandisk-wd-blue-sn5100-2tb-ssd-review/2Read 14 October 20262TB, 15-minute Iometer sequential write, 1MiB blocks, queue depth 32. The drive wrote at 6.45 GB/s for over 78 seconds and the review says the cache is over 500GB. Stored as 500, since the review gives no exact size. Intel Core i9-12900K on Asus ROG Maximus Z790 Hero, drive prefilled to 50% and tested as a secondary device

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.

Not available

3,900MB/s10Reviewtomshardware.com/pc-components/ssds/sandisk-wd-black-sn8100-2tb-ssd-review/2Read 14 October 20262TB. 15-minute Iometer sequential write. Writes in pSLC mode at over 13.2 GB/s first, then in TLC mode at 3.9 GB/s, before a slower folding mode later. 3.9 GB/s is stored as 3900. Intel Core i9-12900K, Asus ROG Maximus Z790 Hero, drive prefilled to 50%, tested as a secondary device. The cache size is only given as about a third of the capacity, so it is not stored

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.

4,192points9Reviewstoragereview.comRead 14 October 20262TB overall score 4,192 in the 3DMark Storage Benchmark. StorageReview Gen5 test bench, 2TB drive. Drive fill and test size are not stated

6,047points13Reviewstoragereview.com/review/sandisk-wd_black-sn8100-review-elite-performance-in-a-gen5-ssdRead 14 October 20262TB, 3DMark Storage score 6,047. AMD Ryzen 7 9800X3D, Asus ROG Crosshair X870E Hero, 2x16GB G.Skill DDR5-6000, RTX 4090, Windows 11 Pro

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.

53°C5Reviewtomshardware.com/pc-components/ssds/sandisk-wd-blue-sn5100-2tb-ssd-review/2Read 14 October 20262TB. Maximum 53 C during the write test, primary composite sensor, about 22 C ambient. The review uses active cooling for all SSDs unless noted and does not say a heatsink was fitted. ServeTheHome logged a 67 C peak with no heatsink or active cooling

Not available

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".

1,118mW5Reviewtomshardware.com/pc-components/ssds/sandisk-wd-blue-sn5100-2tb-ssd-review/2Read 14 October 20262TB, Quarch PPM idle power with ASPM/LPM disabled, 1,118 mW. Read from chart. The chart is the worst case on a desktop board

Not available

Cooling and build

2 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 heatsink1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Bare M.2 2280 module. The datasheet and product page list no heatsink version2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-5100-internal-nvme-ssdRead 14 October 2026No heatsink version listed

Without heatsink, With heatsink2Maker 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-8100-heatsink-internal-nvme-ssd.pdfRead 14 October 2026Heatsink version is a separate datasheet with model numbers ending TAH. The bare drives end TAN.

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

Yes2Maker 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-8100-heatsink-internal-nvme-ssd.pdfRead 14 October 2026The heatsink version has a low-profile anodized aluminum heatsink with an onboard programmable RGB LED. The bare drive datasheet lists no lighting.

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

1 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.

TCG Pyrite (no encryption), Password protection1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Security row reads TCG Pyrite 2.01 and ATA Security passthrough over NVMe. Pyrite has no encryption. ATA Security is the drive password feature, stored as password protection

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-8100-internal-nvme-ssd.pdfRead 14 October 2026TCG Opal 2.0 only, footnote says it needs motherboard BIOS or third-party software to enable. No AES-256 or IEEE 1667 claim in the datasheet

Software

SanDisk Dashboard1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026Featured software: SANDISK Dashboard (Windows only) and Acronis True Image for SANDISK

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-8100-internal-nvme-ssd.pdfRead 14 October 2026Featured software: SANDISK Dashboard (Windows only) and Acronis True Image for SANDISK

Compatibility

0 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.

Windows2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-5100-internal-nvme-ssdRead 14 October 2026Compatibility reads Windows 10+, PCIe 4.0 x4 interface and M.2 2280 port. No PS5 or handheld claim on the page

Windows3Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-8100-internal-nvme-ssdRead 14 October 2026Compatibility row reads PCIe 5.0 x4 interface, M.2 2280 port, Windows 10+. No PS5 claim for this drive

Dimensions and weight

1 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.

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/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 202680 x 22 x 2.38 mm for 500GB to 4TB. Length and width vary by 0.15 mm2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-5100-internal-nvme-ssdRead 14 October 20263.15 x 0.87 x 0.09 in on the page, the datasheet has the metric values

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-8100-internal-nvme-ssd.pdfRead 14 October 20261TB to 4TB: 80 x 22 x 2.38 mm. 8TB: 80 x 22 x 3.88 mm. Length and width vary by 0.15 mm

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.

5.7g(0.2 oz)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 20265.7 g for 500GB to 4TB, plus or minus 1 g2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-5100-internal-nvme-ssdRead 14 October 20265.7 g

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-8100-internal-nvme-ssd.pdfRead 14 October 20267.5 g for 1TB to 4TB, 8.6 g for 8TB, plus or minus 1 g

In the box

1 of 2 differ

In the box

SANDISK Optimus 5100 NVMe SSD2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-5100-internal-nvme-ssdRead 14 October 2026In The Box reads SANDISK Optimus 5100 NVMe SSD

SANDISK Optimus GX PRO 8100 NVMe SSD3Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-8100-internal-nvme-ssdRead 14 October 2026In The Box reads SANDISK Optimus GX PRO 8100 NVMe SSD for each SKU

Cables includediCables supplied with an external drive.

Not available

Not available

Links

Not compared

Product page

www.sandisk.com/products/ssd/internal-ssd/sandisk-optimus-5100-internal-nvme-ssd2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-5100-internal-nvme-ssdRead 14 October 2026

www.sandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-8100-internal-nvme-ssd3Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-8100-internal-nvme-ssdRead 14 October 2026

Spec sheet

documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdf1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 2026

documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-8100-internal-nvme-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-8100-internal-nvme-ssd.pdfRead 14 October 2026

Manual

Not available

Not available

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.

Not available

Not available

Warranty

0 of 1 differ

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 spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus/data-sheet-sandisk-optimus-5100-internal-ssd.pdfRead 14 October 20265 years or the TBW limit, whichever comes first

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-8100-internal-nvme-ssd.pdfRead 14 October 2026

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