SSDs / Compare

Biwin Black Opal NV7400 vs Sandisk Optimus GX PRO 850P

A

Product A: Biwin

Black Opal NV7400

37 of 63 known

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B

Product B: Sandisk

Optimus GX PRO 850P

42 of 63 known

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Every value links to where we found it.

Only differences

ABiwin Black Opal NV7400

BSandisk Optimus GX PRO 850P

General

5 of 9 differ

Series

Black Opal1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 2026Page lists the drive under Black Opal: Gaming

Optimus GX PRO2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850p-ps5-nvme-ssdRead 23 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.

BNV7400512G-RGX, BNV740001TB-RGX, BNV740002TB-RGX9Retailer pageamazon.com/dp/B0DM23JKXCRead 16 October 2026Listing reads Built-In Media NV7400-2TB. The maker-style part number BNV740002TB-RGX is on the Amazon UK 2TB listing10Retailer pageamazon.com/dp/B0F7NRNH59Read 16 October 2026512GB listing reads Mfr Part Number BNV7400512G-RGX11Retailer pageamazon.co.uk/dp/B0DM1R7KHZRead 16 October 20261TB listing reads Model Name BNV740001TB-RGX12Retailer pageamazon.co.uk/dp/B0DM23JKXCRead 16 October 20262TB listing reads Model Name BNV740002TB-RGX

SDSG81100TAH-000E0, SDSG81100TAH, SDSG81200TAH-000E0, SDSG81200TAH, SDSG81400TAH-000E0, SDSG81400TAH, SDSG81800TAH-000E0, SDSG81800TAH, WDBBYV0010BNC-WRSN, WDBBYV0020BNC-WRSN, WDBBYV0040BNC-WRSN1Maker 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-850p-nvme-ssd.pdfRead 23 October 2026Model numbers SDSG81100TAH, SDSG81200TAH, SDSG81400TAH and SDSG81800TAH. The product page adds the -000E0 suffix. The WD_BLACK SN850P numbers are from the Western Digital data sheet2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850p-ps5-nvme-ssdRead 23 October 2026SKUs SDSG81100TAH-000E0, SDSG81200TAH-000E0, SDSG81400TAH-000E0 and SDSG81800TAH-000E03Maker spec sheet (PDF)cdn.thefpsreview.com/wp-content/uploads/2023/06/WD_BLACK-SN850P-Datasheet.pdfRead 23 October 2026WD_BLACK SN850P NVMe SSD for PS5 consoles data sheet (June 2023, copy hosted by The FPS Review): 1TB WDBBYV0010BNC-WRSN, 2TB WDBBYV0020BNC-WRSN, 4TB WDBBYV0040BNC-WRSN. Same speeds, TBW and 5-year warranty as the Sandisk data sheet. The 8TB model of that line is not in this data sheet and its number is not stored

GTIN / EAN

887184019000, 887184019017, 887184019024, 8871840190319Retailer pageamazon.com/dp/B0DM23JKXCRead 16 October 20262TB listing, UPC 88718401902410Retailer pageamazon.com/dp/B0F7NRNH59Read 16 October 2026512GB listing, UPC 88718401900011Retailer pageamazon.co.uk/dp/B0DM1R7KHZRead 16 October 20261TB listing, UPC 88718401901713Retailer pageamazon.co.uk/dp/B0DM1R7KJ1Read 16 October 20264TB listing, UPC 887184019031. The listing's Model Name field reads V74000, which is cut off, so no 4TB model number is stored

619659232054, 619659232047, 619659232030, 6196592320232Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850p-ps5-nvme-ssdRead 23 October 2026UPC in the page data: 619659232054 (1TB), 619659232047 (2TB), 619659232030 (4TB), 619659232023 (8TB)

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

Not available

7 June 20234Press articlethefpsreview.com/2023/06/08/western-digital-launches-wd_black-sn850p-nvme-ssd-for-ps5-consoles-including-4-tb-version-for-549-99Read 23 October 2026The FPS Review, 8 June 2023: Western Digital launches the WD_BLACK SN850P, available through its web store and participating retailers, 4TB at $549.99. TechRadar and ComputerBase published on 7 June 2023, which is stored

Status

Available1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 2026Page links Amazon US and Amazon UK listings. The Amazon US 2TB listing was in stock on 2026-10-169Retailer pageamazon.com/dp/B0DM23JKXCRead 16 October 2026Amazon US NV7400 2TB listing in stock on 2026-10-16, sold by BIWIN Tech

Available2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850p-ps5-nvme-ssdRead 23 October 2026Product page lists four capacities. The page prices are current store prices and are not used

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

$249.995Press articletechradar.com/news/wd-blacks-latest-ssd-for-ps5-is-here-and-its-not-cheapRead 23 October 2026TechRadar, 7 June 2023: 1TB $159.99, 2TB $249.99, 4TB $549.99, US. Tom's Guide reported $149 and $229 for 1TB and 2TB at the same launch, which differs. Not stated as MSRP, but the launch price of the WD_BLACK SN850P. Sandisk's 2026 Optimus listing prices are higher and are not launch prices of this hardware

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

€221.996Press articlecomputerbase.de/2023-06/wd-black-sn850p-die-sn850x-ssd-kostet-mit-ps5-lizenz-deutlich-mehrRead 23 October 2026ComputerBase, 7 June 2023: the WD_BLACK SN850P is available from the maker's shop at 138.99 EUR (1TB), 221.99 EUR (2TB) and 463.99 EUR (4TB), Germany, including VAT. No euro price found for the 8TB

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 pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 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-850p-nvme-ssd.pdfRead 23 October 2026Form factor row 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.

512 GB, 1 TB, 2 TB, 4 TB1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026

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-850p-nvme-ssd.pdfRead 23 October 20261GB = 1 billion bytes and 1TB = 1 trillion bytes. Capacities 1TB, 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 pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026

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-850p-nvme-ssd.pdfRead 23 October 2026Interface row reads PCIe 4.0 x4 NVMe 1.4. Footnote 9: 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 pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 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-850p-nvme-ssd.pdfRead 23 October 2026

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

41Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 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-850p-nvme-ssd.pdfRead 23 October 2026

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

2.01Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026Interface row reads PCIe Gen4x4, NVMe 2.0

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-850p-nvme-ssd.pdfRead 23 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

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.

Maxio MAP1602A5Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-reviewRead 16 October 2026Spec table reads Maxio MAP1602 for all capacities. The text calls it a four-channel DRAM-less controller. TheSSDReview names the A revision, MAP1602A, which is stored to match other drives in the catalog7Reviewthessdreview.com/our-reviews/nvme/biwin-black-opal-4tb-nv7400-gen4-ssd-reviewRead 16 October 2026Review dated 2025-03-09: Maxiotek MAP1602A Falcon Lite, a four-channel Gen4 NVMe controller at 2400MT/s

Sandisk in-house9Reviewtomshardware.com/pc-components/ssds/sandisk-optimus-gx-pro-850p-2tb-ssd-reviewRead 23 October 2026Specifications table reads Sandisk Proprietary for every capacity. The maker names no 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.

TLC1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 2026Page reads high-quality 3D TLC NAND flash5Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-reviewRead 16 October 2026

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-850p-nvme-ssd.pdfRead 23 October 2026NAND row reads SANDISK TLC 3D NAND. The data sheet gives no flash generation or layer count

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

Micron B58R TLC5Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-reviewRead 16 October 2026Spec table reads Micron 232-Layer TLC (B58R). The packages are labelled BW29F4T08EMLCHQM, and the review says the 29 marks Micron or Intel IMFT flash7Reviewthessdreview.com/our-reviews/nvme/biwin-black-opal-4tb-nv7400-gen4-ssd-reviewRead 16 October 2026Four pieces of Micron 232-layer B58R 3D TLC. The review corrects its first report of YMTC flash, after Biwin said early samples used YMTC and the final product uses Micron

Not available

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

2325Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-reviewRead 16 October 2026Spec table reads Micron 232-Layer TLC (B58R)7Reviewthessdreview.com/our-reviews/nvme/biwin-black-opal-4tb-nv7400-gen4-ssd-reviewRead 16 October 2026232-layer B58R

Not available

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 product pagebiwintech.com/product/nv7400-ssdRead 16 October 2026Spec table reads DRAM-less. The text says the drive uses HMB (host memory buffer) with SRAM and Smart Cache, so HMB is stored2Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026DRAM Cache row reads DRAM-less. HMB comes from the product page5Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-reviewRead 16 October 2026Spec table lists DRAM as N/A (HMB) for all capacities

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-850p-nvme-ssd.pdfRead 23 October 2026DRAM cache row reads Yes. The data sheet gives no size

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

1GB9Reviewtomshardware.com/pc-components/ssds/sandisk-optimus-gx-pro-850p-2tb-ssd-reviewRead 23 October 20262TB sample has 1GB of DDR4 DRAM, half the usual 2GB and half of the review's 2TB WD_BLACK SN850X sample. Other capacities are not stated. The flash is likely BiCS5, but the review hedges and says BiCS6 is possible, so no flash generation is stored

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-sided1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 2026Dimensions row and text read standard M.2 2280 single-sided design2Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 20265Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-reviewRead 16 October 2026Review: the NV7400 is a single-sided drive at all capacities

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-850p-nvme-ssd.pdfRead 23 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-M. Tom's Hardware also says the bare drive is single-sided at 1TB and 2TB and double-sided at 4TB and 8TB

Performance

4 of 4 differ

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

7,450MB/s1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026Up to values, tested by BIWIN labs, host and tool not stated: 512GB 7,050 MB/s, 1TB 7,400, 2TB 7,450, 4TB 7,400. The base is the 2TB model

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-850p-nvme-ssd.pdfRead 23 October 2026Up to 7,300 MB/s for 1TB, 2TB and 4TB and 7,200 MB/s for 8TB. Sequential read 1MB, queue depth 8, 1 thread. 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.

6,500MB/s1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026512GB 4,200 MB/s, 1TB 6,500, 2TB 6,500, 4TB 6,500

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-850p-nvme-ssd.pdfRead 23 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.

1,000,000IOPS1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026512GB 800K IOPS, 1TB 1,000K, 2TB 1,000K, 4TB 900K. Queue depth is not stated

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-850p-nvme-ssd.pdfRead 23 October 2026Random read 4KB up to 800K IOPS (1TB) and 1.2M IOPS (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.

900,000IOPS1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026512GB 800K IOPS, 1TB 900K, 2TB 900K, 4TB 900K

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-850p-nvme-ssd.pdfRead 23 October 2026Random write 4KB up to 1.1M IOPS (1TB, 2TB, 4TB) and 1.2M IOPS (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.

2,000TB1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026Warranty row: 5-Year / 500 TBW (512GB), 1000 TBW (1TB), 2000 TBW (2TB), 4000 TBW (4TB)

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-850p-nvme-ssd.pdfRead 23 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.

1,500,000h1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026Published as MTBF, 1,500,000 hours, from internal Telcordia stress testing

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-850p-nvme-ssd.pdfRead 23 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°C1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 20260 to 70 C. Storage range of -40 to 85 C 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-850p-nvme-ssd.pdfRead 23 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

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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.

Not available

Not available

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

Not available

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.

6.5W5Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-reviewRead 16 October 2026Review text: the label reads 3.3V/2.0A and this matches the highest power state, which is pegged at 6.50W. The maker does not publish a power figure. TheSSDReview also reads an active power maximum of 6.5 watts7Reviewthessdreview.com/our-reviews/nvme/biwin-black-opal-4tb-nv7400-gen4-ssd-reviewRead 16 October 2026Review text: active power maximum of 6.5 watts

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

Not available

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

6,978MB/s10Reviewtomshardware.com/pc-components/ssds/sandisk-optimus-gx-pro-850p-2tb-ssd-review/2Read 23 October 20262TB with the PlayStation heatsink. CrystalDiskMark peak sequential read 1MB QD8: 6,978 MB/s, read from the chart. KitGuru has no review of this drive, so Tom's Hardware is the CrystalDiskMark source. Intel Core i9-12900K, Asus ROG Maximus Z790 Hero, drive prefilled to 50 percent and tested as a secondary drive with active cooling. The test file size is not stated in the review

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

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6,391MB/s10Reviewtomshardware.com/pc-components/ssds/sandisk-optimus-gx-pro-850p-2tb-ssd-review/2Read 23 October 2026Peak sequential write 1MB QD8: 6,391 MB/s, same bench

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.

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95.56MB/s10Reviewtomshardware.com/pc-components/ssds/sandisk-optimus-gx-pro-850p-2tb-ssd-review/2Read 23 October 2026Random read 4KB QD1: 23,329 IOPS, read from the chart, stored as IOPS x 4096 / 1,000,000, which is 95.56 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.

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403.61MB/s10Reviewtomshardware.com/pc-components/ssds/sandisk-optimus-gx-pro-850p-2tb-ssd-review/2Read 23 October 2026Random write 4KB QD1: 98,538 IOPS, read from the chart, stored as 403.61 MB/s

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

339GB6Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-review/2Read 16 October 20262TB sample. Iometer sequential write for 15 minutes, 1MiB blocks, queue depth 32: 5.84 GB/s for 58 seconds, which the review calls a 339GB cache. Drive prefilled to 50 percent and tested as a secondary device. Intel Core i9-12900K on an Asus ROG Maximus Z790 Hero, Windows 11 Pro, active cooling unless noted

595GB10Reviewtomshardware.com/pc-components/ssds/sandisk-optimus-gx-pro-850p-2tb-ssd-review/2Read 23 October 20262TB. Iometer sequential write for 15 minutes: over 6.46 GB/s for just over 92 seconds, a cache of 595GB

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.

2,600MB/s6Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-review/2Read 16 October 20262TB sample. Review text: after the cache the drive writes to TLC at around 2.6 GB/s, stored as 2600. The chart shows the line settle near 2,600 MB/s. The folding state below 900 MB/s and the 15 minute average of 1,344 MB/s are not stored

1,600MB/s10Reviewtomshardware.com/pc-components/ssds/sandisk-optimus-gx-pro-850p-2tb-ssd-review/2Read 23 October 2026After the cache the drive writes to native TLC at 1.6 GB/s. The text gives a rounded figure

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.

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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.

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54°C10Reviewtomshardware.com/pc-components/ssds/sandisk-optimus-gx-pro-850p-2tb-ssd-review/2Read 23 October 20262TB with the heatsink fitted: maximum temperature 54 C on the drive's primary composite sensor, about 22 C ambient, active cooling on the bench. The review does not describe the test behind the figure. Tom's Hardware runs its 15-minute sequential write test on every drive and says its testing is meant to heat the drive to a realistic ceiling

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".

714mW6Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-review/2Read 16 October 20262TB sample, read from chart. Quarch PPM idle power with ASPM and LPM disabled, 714 mW

1,220mW10Reviewtomshardware.com/pc-components/ssds/sandisk-optimus-gx-pro-850p-2tb-ssd-review/2Read 23 October 20262TB. Quarch PPM idle power with ASPM/LPM disabled, 1,220 mW, read from chart

Cooling and build

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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 product pagebiwintech.com/product/nv7400-ssdRead 16 October 2026Page names a graphene thermal pad and no heatsink. A separate NV7400 Heatsink model with RGB lighting appears only in a Chinese spec sheet from cn.biwintech.com and was not stored5Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-reviewRead 16 October 2026Review says the drive should operate fine without a heatsink and sees only a graphene label on the sample9Retailer pageamazon.com/dp/B0DM23JKXCRead 16 October 2026Listing bullet reads PMIC power management and graphite heat sink, and a 0.5mm graphene aluminium heat sink. The maker's page and both reviews show only a graphene thermal label on the drive and no heatsink, so bare is stored

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-850p-nvme-ssd.pdfRead 23 October 2026Every model has the exclusive PlayStation heatsink. No bare version is sold

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.

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Dust and water ratingiPublished IP rating of an external drive.

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

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Security and software

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

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Software

Biwin Intelligence1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 2026Page offers the Biwin Intelligence download (Windows)5Reviewtomshardware.com/pc-components/ssds/biwin-black-opal-nv7400-2tb-ssd-reviewRead 16 October 2026Review names Biwin Intelligence as the drive's software

SanDisk Dashboard9Reviewtomshardware.com/pc-components/ssds/sandisk-optimus-gx-pro-850p-2tb-ssd-reviewRead 23 October 2026Sandisk Dashboard, an SSD toolbox, and Acronis True Image for Sandisk. The heatsink has no RGB

Compatibility

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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 pagebiwintech.com/product/nv7400-ssdRead 16 October 2026Text reads broadly compatible with desktops, ultrabooks and gaming laptops, and says the drive can expand and upgrade PS5 storage. No operating system is named, so PC is stored. The maker lists the bare drive with a 0.5 mm graphene thermal pad (no heatsink) for the PS5

PS5, Windows1Maker 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-850p-nvme-ssd.pdfRead 23 October 2026System compatibility row reads PlayStation 5, PlayStation 5 Pro, Windows 10+. Footnote 10: PC compatibility is not tested or endorsed by Sony Interactive Entertainment

Dimensions and weight

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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.

Length80Width22Height2.45mm(3.1 × 0.9 × 0.1 in)1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 202680.00 x 22.00 x 2.45 mm (single-sided), the same for all capacities

Length80Width24.46Height9.89mm(3.1 × 1 × 0.4 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-850p-nvme-ssd.pdfRead 23 October 2026Drive with its PlayStation heatsink. Length 80 mm and width 24.46 mm for every capacity, height 9.89 mm for 1TB and 2TB and 10.31 mm for 4TB and 8TB. Footnote 8: length and width vary by +/-0.5 mm. Base is the 2TB

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.

9g(0.3 oz)1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 20262Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026Published as 9 g or less, so 9 is the stored maximum

24g(0.8 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-850p-nvme-ssd.pdfRead 23 October 202624 g for 1TB and 2TB and 30.4 g for 4TB and 8TB, with heatsink. Footnote 8: weight varies by +/-10 percent. The Sandisk product page and the WD_BLACK SN850P data sheet give 30.4 g for 1TB and 2TB as well. The newer Sandisk data sheet is stored

In the box

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In the box

SSD, Screw, Manual7Reviewthessdreview.com/our-reviews/nvme/biwin-black-opal-4tb-nv7400-gen4-ssd-reviewRead 16 October 2026Review says an installation screw and a screwdriver are in the package. The Amazon listings name a screw and a manual, so only those are stored11Retailer pageamazon.co.uk/dp/B0DM1R7KHZRead 16 October 2026Box Contents reads SSD, SSD Body, Screw, Manual. SSD Body repeats SSD, so SSD, Screw and Manual are stored

SANDISK Optimus GX PRO 850P NVMe SSD2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850p-ps5-nvme-ssdRead 23 October 2026In The Box reads SANDISK Optimus GX PRO 850P NVMe SSD, the same on every capacity

Cables includediCables supplied with an external drive.

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Links

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Product page

www.biwintech.com/product/nv7400-ssd1Maker product pagebiwintech.com/product/nv7400-ssdRead 16 October 2026

www.sandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850p-ps5-nvme-ssd2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-pro-850p-ps5-nvme-ssdRead 23 October 2026

Spec sheet

www.biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdf2Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 2026English two-page spec sheet, PDF dated 2025-09-12 (the page lists it as 2025-09-14)

documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx-pro/data-sheet-optimus-gx-pro-850p-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-850p-nvme-ssd.pdfRead 23 October 2026SANDISK Optimus GX PRO 850P data sheet, 2026 copyright. It covers 1TB, 2TB, 4TB and 8TB. The product line was sold as the WD_BLACK SN850P from June 2023, see the Western Digital data sheet source

Manual

www.biwintech.com/wp-content/uploads/2026/03/Biwin-PCIe-SSD-User-Manual_EN_CH_JP_ZH-TW_FR_DE.pdf3Owner's manualbiwintech.com/wp-content/uploads/2026/03/Biwin-PCIe-SSD-User-Manual_EN_CH_JP_ZH-TW_FR_DE.pdfRead 16 October 2026Biwin PCIe SSD Quick Start Guide, English and five other languages, PDF created 2026-03-20. It covers all Biwin PCIe SSDs and does not name the NV7400

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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 pagebiwintech.com/product/nv7400-ssdRead 16 October 20265-year limited warranty, or until the TBW is reached, whichever comes first2Maker spec sheet (PDF)biwintech.com/wp-content/uploads/2025/06/Black-Opal-NV7400-Specifications-1.pdfRead 16 October 20263Owner's manualbiwintech.com/wp-content/uploads/2026/03/Biwin-PCIe-SSD-User-Manual_EN_CH_JP_ZH-TW_FR_DE.pdfRead 16 October 2026Warranty statement: the period ends at the earlier of the warranty term or the TBW threshold. The 5-year term comes from the spec sheet

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-850p-nvme-ssd.pdfRead 23 October 20265 years or the maximum endurance (TBW) limit, whichever occurs first. The data sheet is global and names no market

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