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Sandisk Optimus GX C50 Storage Expansion Card for Xbox vs Sandisk Optimus GX PRO 850P

A

Product A: Sandisk

Optimus GX C50 Storage Expansion Card for Xbox

19 of 63 known

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B

Product B: Sandisk

Optimus GX PRO 850P

42 of 63 known

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All 63 fields

Every value links to where we found it.

Only differences

ASandisk Optimus GX C50 Storage Expansion Card for Xbox

BSandisk Optimus GX PRO 850P

General

6 of 9 differ

Series

Optimus GX1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Maker line name is SANDISK Optimus GX, model C50

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.

SDCEOGN-512G-GNAGX, SDCEOGN-1T00-GNAGX, SDCEOGN-2T00-GNAGX1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Specifications rows and the Model Numbers list: SDCEOGN-512G-GNAGX, SDCEOGN-1T00-GNAGX and SDCEOGN-2T00-GNAGX. Sandisk lists one model number per capacity

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

619659234454, 619659234447, 6196592344231Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026The page's product data lists UPC 619659234454 for the 512GB, 619659234447 for the 1TB and 619659234423 for the 2TB9Retailer pageamazon.com/Sandisk-Optimus-Storage-Expansion-Card/dp/B0H8XY7QWYRead 14 October 2026UPC 619659234447 for the 1TB, the same as on the Sandisk page. The page also gives weight 27.22 g and PCI Express x4, which differ from the maker and are not 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.

7 June 20234Maker product pagesandisk.com/products/ssd/external-ssd/wd-black-c50-expansion-card-for-xbox-ssdRead 14 October 2026WD_BLACK C50 unveiled and on sale on 7 June 2023. Sandisk revealed the Optimus GX C50 name in August 20265Press articlestoragereview.com/news/wd_black-c50-expansion-card-now-availableRead 14 October 2026Article dated June 7, 2023 says WD_BLACK has unveiled the C50

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

Available6Press articletomshardware.com/pc-components/external-ssds/sandisk-expansion-cards-for-xbox-series-x-s-now-available-on-amazon-alternative-storage-solution-to-seagate-wd-arrives-on-the-market-five-years-after-the-launch-of-the-consolesRead 14 October 2026Article of 21 August 2026 says the Optimus GX C50 is on Amazon, from $249.99 for the 1TB9Retailer pageamazon.com/Sandisk-Optimus-Storage-Expansion-Card/dp/B0H8XY7QWYRead 14 October 2026Amazon US listing for the 1TB, SDCEOGN-1T00-GNAGX, shows In Stock on 2026-10-14, rank 7 in External Solid State Drives and 1K+ bought

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

Black9Retailer pageamazon.com/Sandisk-Optimus-Storage-Expansion-Card/dp/B0H8XY7QWYRead 14 October 2026Color attribute reads Black

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.

Xbox expansion card1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026The page sells it as a Storage Expansion Card for XBOX Series X|S, and the Interface row reads XBOX Expansion Slot2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Form factor row reads NVMe SSD and the Interface row reads XBOX Storage Expansion Slot, so the Xbox expansion card option fits

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 TB1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Capacity rows 512GB, 1TB and 2TB. Footnote: 1GB = 1 billion bytes and 1TB = 1 trillion bytes2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Capacities 512GB, 1TB and 2TB. Footnote: 1GB = 1 billion bytes and 1TB = 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-850p-nvme-ssd.pdfRead 23 October 20261GB = 1 billion bytes and 1TB = 1 trillion bytes. Capacities 1TB, 2TB, 4TB, 8TB

Interface

2 of 5 differ

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 pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Interface row reads XBOX Expansion Slot, which is no option of the Interface field. The page says the card has a super speed NVMe core, so PCIe NVMe is stored. Sandisk names no PCIe generation or lane count2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Interface XBOX Storage Expansion Slot. The card is an NVMe SSD, so PCIe NVMe is stored8Press articlebasic-tutorials.com/news/sandisk-optimus-gx-c50-new-xbox-series-x-storage-expansion-with-up-to-2-tbRead 14 October 2026Says the card uses an NVMe core internally and connects through the Xbox expansion slot. It quotes PCIe 4.0 x2 from a retailer, which is not stored because other listings differ

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.

45Press articlestoragereview.com/news/wd_black-c50-expansion-card-now-availableRead 14 October 2026Article of 7 June 2023 on the WD_BLACK C50 says the Xbox expansion slot, which the card plugs into, works as a high-speed NVMe Gen4 x2 port. Sandisk's Optimus pages and data sheet name no PCIe generation and give the form factor as NVMe SSD. The link is set by the slot, so Gen 4 is stored

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.

25Press articlestoragereview.com/news/wd_black-c50-expansion-card-now-availableRead 14 October 2026Same article, Gen4 x2 port. The Sandisk pages and data sheet name no lane count. Amazon US lists the card as PCI Express x4, which is a catalog label and is not used

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.

Not available

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.

Not available

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.

Not available

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.

Not available

Not available

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

Not available

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.

Not available

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.

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-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.

Not available

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.

Not available

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.

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-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.

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-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.

Not available

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.

Not available

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.

Min0Max45°C2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Product Specifications, Environmental: Operating Temperature 32 F to 113 F (0 C to 45 C). Non-operating -20 C to 85 C is not stored. The former WD_BLACK C50 sheet said -5 C to 55 C. The Optimus data sheet is the maker's document for this exact model, so its range is 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

None of 6 known

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.

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

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.

Not available

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.

Not available

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.

Not available

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.

Not available

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.

Not available

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.

Not available

Not available

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".

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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.

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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

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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.

Xbox Series X|S1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Compatibility rows: XBOX Series S Console and XBOX Series X Console2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Device compatibility: XBOX Series S console, XBOX Series X console

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.

Length55.4Width31.6Height7.7mm(2.2 × 1.2 × 0.3 in)2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Size 2.18 x 1.24 x 0.3 in | 55.4 x 31.6 x 7.7 mm. The WD_BLACK C50 sheet gave 55.6 mm for the length3Maker product pagesandisk.com/en-gb/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Dimensions (L x W x H) 55.4mm x 31.6mm x 7.7mm. The US page gives 2.18 x 1.24 x 0.3 inches, which agrees

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.

25g(0.9 oz)1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Weight row reads 25gms2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Weight 0.055 lb | 25.0 g3Maker product pagesandisk.com/en-gb/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 202625gms

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

SANDISK Optimus GX C50 Storage Expansion Card for XBOX Series X|S1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026In The Box row lists the card only. The Xbox Game Pass Ultimate and Discord Nitro trials are offers, not box items on this page

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.sandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xbox1Maker product pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 2026Sandisk US page for the 512GB, 1TB and 2TB models. The Notify Me button shows on the page, so the store showed no stock on 2026-10-14

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

documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdf2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Two-page Sandisk data sheet linked from the Data Sheet block of the product page, copyright 2026. It names no speeds, endurance, controller or flash

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

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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 pagesandisk.com/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 20265-Year Limited Warranty. The page names no market2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-sandisk-optimus-gx-c50-ssd-expansion-card.pdfRead 21 October 2026Limited warranty 5-Year, footnote points to sandisk.com/wug for details3Maker product pagesandisk.com/en-gb/products/ssd/external-ssd/sandisk-optimus-gx-c50-ssd-expansion-card-for-xboxRead 14 October 20265-Year Limited Warranty

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.