SSDs / Compare

PNY CS900 vs Sandisk 520 SATA SSD

A

Product A: PNY

CS900

20 of 63 known

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B

Product B: Sandisk

520 SATA SSD

25 of 63 known

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Every value links to where we found it.

Only differences

APNY CS900

BSandisk 520 SATA SSD

General

2 of 9 differ

Series

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

SSD7CS900-120-RB, SSD7CS900-240-RB, SSD7CS900-250-RB, SSD7CS900-480-RB, SSD7CS900-500-RB, SSD7CS900-960-RB, SSD7CS900-1TB-RB, SSD7CS900-2TB-RB, SSD7CS900-4TB-RB, SSD7CS900-8TB-RB2Maker spec sheet (PDF)content.shi.com/cms-content/accelerator/media/pdfs/pny/pny-060223-pny-ssd-cs900-datasheet.pdfRead 15 October 2026PNY CS900 datasheet ver. 08-30-21, a PNY PDF mirrored by the reseller SHI. PNY Part Number rows list SSD7CS900-120-RB, -240-RB, -250-RB, -480-RB, -500-RB, -960-RB, -1TB-RB, -2TB-RB, -4TB-RB and -8TB-RB3Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-11-26-25.pdfRead 15 October 2026PNY Part Number rows for 250GB, 500GB, 1TB, 2TB and 4TB, same as the 08-30-21 datasheet

SDSS51500GAB-000G0, SDSS51100TAB-000G0, SDSS51200TAB-000G0, SDSS51400TAB-000G01Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 2026Model Numbers list: 500GB SDSS51500GAB-000G0, 1TB SDSS51100TAB-000G0, 2TB SDSS51200TAB-000G0, 4TB SDSS51400TAB-000G0. The store page showed an out of stock state in one snapshot, while retailers list the drive

GTIN / EAN

751492597843, 751492597867, 751492629940, 751492597881, 751492629957, 751492604183, 751492629964, 751492636023, 751492640297, 7514926426043Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-11-26-25.pdfRead 15 October 2026UPC Code rows: 250GB 751492629940, 500GB 751492629957, 1TB 751492629964, 2TB 751492636023, 4TB 751492640297. The other UPCs come from reseller listings below7Retailer pagetecisoft.com/products/pny-cs900-8tb-2-5-sata-internal-solid-state-drive-ssd7cs9008tbrbRead 15 October 2026Tecisoft listings give the UPCs of the capacities PNY's sell sheets do not: 120GB 751492597843, 240GB 751492597867, 480GB 751492597881, 960GB 751492604183 (pages for SSD7CS900-120-RB, -240-RB, -480-RB and -960-RB) and 8TB 751492642604 (this page). All pass the UPC-A check digit

619659231767, 6196592317504Retailer pageshop.tsukumo.co.jp/goods/0619659231767Read 14 October 2026Tsukumo Japan listing for SDSS51200TAB-000G0, with EAN-13 0619659231767 in its address, which is UPC 619659231767. The 4TB code 619659231750 was seen only in a search summary of a Sumillion listing that no longer loads. Both have valid check digits. The 500GB and 1TB codes were not found

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

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Status

Available1Maker product pagepny.com/ssd-cs900Read 15 October 2026The page sells the CS900 2.5 inch line in 2026 and PNY's current sell sheet (ver. 11-19-25) lists it

Available1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 2026The page lists the 520 as a current product. The store showed it out of stock in one snapshot. Search results show retailer listings such as Adorama and Proshop, which were not opened, and Tsukumo Japan sold the 2TB from 2026-09-17

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

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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.

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

From $249.991Maker product pagepny.com/ssd-cs900Read 15 October 20262Maker spec sheet (PDF)content.shi.com/cms-content/accelerator/media/pdfs/pny/pny-060223-pny-ssd-cs900-datasheet.pdfRead 15 October 20263Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-11-26-25.pdfRead 15 October 20265Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/solid-state-drive-warranty-v01.02.2025.pdfRead 15 October 20266Maker spec sheet (PDF)pny.com/File%20Library/Commercial/PNYPRO-CS900-Datasheet-High-Performance-Web.pdfRead 15 October 20268Spec databasegeizhals.de/1508814Read 15 October 202610Press articlenext.ink/3171/ssd-cs900-960-go-pny-annonce-flash-tlc-mais-utilise-qlcRead 21 October 202611Spec databasegeizhals.de/pny-cs900-120gb-ssd7cs900-120-pb-a1508809.htmlRead 21 October 202612Spec databasegeizhals.de/pny-cs900-240gb-ssd7cs900-240-pb-a1508812.htmlRead 21 October 202613Spec databasegeizhals.de/pny-cs900-960gb-ssd7cs900-960-pb-a1762162.htmlRead 21 October 202614Retailer pagegdm.or.jp/pressrelease/2017/0509/206272Read 21 October 202615Press articlepcper.com/2018/03/pny-adds-cs900-960gb-sata-ssd-to-budget-ssd-seriesRead 21 October 2026

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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.

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

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ColoursiThe maker's own colour names

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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.

2.5-inch1Maker product pagepny.com/ssd-cs900Read 15 October 2026Form factor row reads 2.5 inch. PNY also sells a CS900 in M.2 2280 SATA, which is a different product and is not stored here2Maker spec sheet (PDF)content.shi.com/cms-content/accelerator/media/pdfs/pny/pny-060223-pny-ssd-cs900-datasheet.pdfRead 15 October 2026Form Factor row reads 2.5-inch

2.5-inch1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 20262.5-inch form factor2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 20262.5 inch, 7 mm cased

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.

120 GB, 240 GB, 250 GB, 480 GB, 500 GB, 960 GB, 1 TB, 2 TB, 4 TB, 8 TB1Maker product pagepny.com/ssd-cs900Read 15 October 2026Page lists the capacities 120GB, 240GB, 250GB, 480GB, 500GB, 960GB, 1TB, 2TB, 4TB and 8TB. A footnote says usable capacity is lower after formatting. 1TB is stored as 1000 GB and 960GB stays 9602Maker spec sheet (PDF)content.shi.com/cms-content/accelerator/media/pdfs/pny/pny-060223-pny-ssd-cs900-datasheet.pdfRead 15 October 2026Usable Capacities (IDEMA) row lists 120GB, 240GB, 250GB, 480GB, 500GB, 960GB, 1TB, 2TB, 4TB and 8TB. This is the only PNY sheet with every capacity, since PNY's 2025 sheets list 250GB to 4TB

500 GB, 1 TB, 2 TB, 4 TB1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 2026Capacities 500GB, 1TB, 2TB and 4TB. Footnote says 1GB is 1 billion bytes

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.

SATA1Maker product pagepny.com/ssd-cs900Read 15 October 2026Interface row reads SATA III 6Gb/s, backward compatible with SATA II 3Gb/s2Maker spec sheet (PDF)content.shi.com/cms-content/accelerator/media/pdfs/pny/pny-060223-pny-ssd-cs900-datasheet.pdfRead 15 October 2026Interface row reads SATA-III (6 Gb/s), backwards compatible with SATA-II

SATA1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 20262Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026SATA III 6 Gbps, backwards compatible with SATA I and II. Footnote also says secure boot and secure firmware update are supported, which has no schema option

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.

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

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

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

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Hardware

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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.

Phison9Maker spec sheet (PDF)pny.com/File%20Library/Support/PNY%20Products/Resource%20Center/Solid%20State%20Drives/PNY-Linecard-SSD.pdfRead 21 October 2026PNY SSD line card, PDF created March 2020. The CS900 2.5 inch SATA III rows (120GB to 1TB) list the controller as Phison with 3D NAND and name no controller model. The line card does not cover the 2TB, 4TB and 8TB. Geizhals also lists Phison for those capacities, so Phison is stored for the family. The Phison PS3111-S11 named by Next and Geizhals applies to the 120GB to 960GB drives and is not confirmed for the larger ones10Press articlenext.ink/3171/ssd-cs900-960-go-pny-annonce-flash-tlc-mais-utilise-qlcRead 21 October 2026Teardown of a 240GB and a 960GB CS900 bought in late 2019: Phison PS3111-S11-13 controller, four flash packages. Next is a French tech news site16Spec databasegeizhals.de/pny-cs900-2tb-ssd7cs900-2tb-rb-ssd7cs900-2tb-pb-a2430487.htmlRead 21 October 20262TB page: Controller row reads Phison with no model. The 4TB and 8TB pages read the same. The model is not named for these capacities

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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.

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TLC1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 2026Page says built with trusted SANDISK 3D NAND. The datasheet table says SANDISK TLC 3D NAND2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026

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

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Sandisk 3D TLC2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026Row NAND TYPE reads SANDISK TLC 3D NAND. No generation or layer count is published

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

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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.

None8Spec databasegeizhals.de/1508814Read 15 October 2026DRAM-Cache row reads nein (no). Controller row reads Phison PS3111-S11, 2 channels, embedded cache (32MB SDR). SATA has no host memory buffer, so the value is none10Press articlenext.ink/3171/ssd-cs900-960-go-pny-annonce-flash-tlc-mais-utilise-qlcRead 21 October 2026Teardown says the drive has no cache chip. The S11 controller has no external DRAM and SATA has no host memory buffer, so the value is none11Spec databasegeizhals.de/pny-cs900-120gb-ssd7cs900-120-pb-a1508809.htmlRead 21 October 2026DRAM-Cache row reads nein (no) on every CS900 capacity page, with Phison PS3111-S11 and an embedded 32MB cache named as the controller. SATA has no host memory buffer, so the value is none16Spec databasegeizhals.de/pny-cs900-2tb-ssd7cs900-2tb-rb-ssd7cs900-2tb-pb-a2430487.htmlRead 21 October 20262TB page: DRAM-Cache row reads nein (no). SATA has no host memory buffer, so the value is none

None2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026Datasheet table: DRAM No, SLC cache Yes. SATA has no host memory buffer, so the value is none

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.

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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.

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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.

550MB/s2Maker spec sheet (PDF)content.shi.com/cms-content/accelerator/media/pdfs/pny/pny-060223-pny-ssd-cs900-datasheet.pdfRead 15 October 2026Max sequential read per capacity: 120GB 515, 240GB and 250GB 535, 480GB and 500GB 550, 960GB and 1TB 535, 2TB 550, 4TB and 8TB 560 MB/s. Footnote on PNY's sell sheets says speeds vary with host device, settings, OS and applications. No test tool is named. Base value is the 2TB model3Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-11-26-25.pdfRead 15 October 2026Up to 535 MB/s (250GB), 550 (500GB), 535 (1TB), 550 (2TB), 560 (4TB). Same figures as the 08-30-21 datasheet

560MB/s1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 2026Per-capacity specifications: read 560 MB/s at every capacity, write 510 (500GB), 520 (1TB), 520 (2TB) and 525 (4TB). The page footnote says the speeds are based on internal testing with no tool or host named

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

530MB/s2Maker spec sheet (PDF)content.shi.com/cms-content/accelerator/media/pdfs/pny/pny-060223-pny-ssd-cs900-datasheet.pdfRead 15 October 2026Max sequential write per capacity: 120GB 490, 240GB and 250GB 500, 480GB and 500GB 500, 960GB and 1TB 515, 2TB 530, 4TB and 8TB 540 MB/s. No test tool is named. Base value is the 2TB model3Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-11-26-25.pdfRead 15 October 2026Up to 500 MB/s (250GB), 500 (500GB), 515 (1TB), 530 (2TB), 540 (4TB). Footnote: speeds vary with host, settings, configuration, OS and applications

520MB/s1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 20262Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026

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.

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89,000IOPS2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026Random read up to 78K, 89K, 89K and 85K IOPS and random write up to 73K, 74K, 75K and 76K for 500GB, 1TB, 2TB and 4TB. Queue depth and threads are not stated

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.

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75,000IOPS2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026

Endurance and reliability

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

540TB5Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/solid-state-drive-warranty-v01.02.2025.pdfRead 15 October 2026PNY SSD limited warranty document dated January 2025, TBW Attachment I, row 2.5 inch SATA CS900 (3 Years): 120GB 40, 240GB 100, 250GB 100, 480GB 200, 500GB 200, 960GB 450, 1TB 450, 2TB 540, 4TB 1,155 and 8TB 5,695 TB. The attachment lists a separate CS900 M.2 SATA with its own TBW. The 8TB figure is far above the trend of the smaller capacities and is stored as PNY published it. Base value is the 2TB model

700TB1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 2026Endurance (TBW) 300, 400, 700 and 1,000 for 500GB, 1TB, 2TB and 4TB. TBW follows JEDEC client workload JESD2192Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026

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

2,000,000h1Maker product pagepny.com/ssd-cs900Read 15 October 2026MTBF row reads 2 million hours. The sell sheets read 2,000,000 hours Mean Time Between Failures2Maker spec sheet (PDF)content.shi.com/cms-content/accelerator/media/pdfs/pny/pny-060223-pny-ssd-cs900-datasheet.pdfRead 15 October 2026Mean Time Between Failures (MTBF) 2,000,000 Hours3Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-11-26-25.pdfRead 15 October 2026Mean Time Before Failures (MTBF) 2,000,000 Hours

2,250,000h1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 2026Page says up to 2.25M hours MTTF. Published as MTTF, stored as MTBF2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026MTTF up to 2.25M hours, based on Telcordia SR-332 stress testing at 25 C. Stored as MTBF

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

Min0Max70°C2Maker spec sheet (PDF)content.shi.com/cms-content/accelerator/media/pdfs/pny/pny-060223-pny-ssd-cs900-datasheet.pdfRead 15 October 2026Operating Temperature 0 C ~ 70 C. Storage -40 C ~ 85 C is not stored3Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-11-26-25.pdfRead 15 October 2026Operating Temperature 0 C ~ 70 C

Min0Max70°C1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 20262Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 20260 to 70 C as reported by the drive. Non-operating -55 to 85 C, shock 1,500 G at 0.5 ms and vibration figures are 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.

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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.

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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.

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2.59W2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026Max Read Operating 1.51, 1.49, 1.52 and 1.8 W. Max Write Operating 1.7, 1.8, 2.59 and 4.65 W. The higher write figure is stored. Footnote 3 says IOMeter with DIPM enabled, averaged over 10 microsecond intervals during continuous sequential read or write. Average Active Power of 0.97, 1.01, 1.05 and 1.09 W is not stored, since its workload is not stated

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.

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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.

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

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9mW2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026DevSlp 9, 10, 9 and 10 mW for 500GB, 1TB, 2TB and 4TB. Slumber of 31, 31, 34 and 31 mW is a SATA link state and is not stored

Measured

None of 9 known

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.

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

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

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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.

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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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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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Cooling and build

None of 4 known

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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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 Dashboard1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 2026Page names the downloadable SANDISK Dashboard (Windows only) and the free Acronis True Image for SANDISK migration software2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026

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.

Windows, macOS, Linux2Maker spec sheet (PDF)content.shi.com/cms-content/accelerator/media/pdfs/pny/pny-060223-pny-ssd-cs900-datasheet.pdfRead 15 October 2026Operating Systems row: Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, Linux, Mac OS X, Ubuntu 14. PNY's Feb 2025 sheet adds Windows 114Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-.pdfRead 15 October 2026Operating Systems row: Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, Linux, Mac OS X, Ubuntu 14

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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.

Length100Width70Height7mm(3.9 × 2.8 × 0.3 in)1Maker product pagepny.com/ssd-cs900Read 15 October 2026Height row reads 7mm. Length and width come from the 2019 datasheet4Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-.pdfRead 15 October 2026Dimensions (L x W x H) row reads 3.9 in x 2.75 in x 0.25 in, which is the rounded inch form of the 100 x 70 x 7 mm in the 2019 datasheet. The mm values are stored6Maker spec sheet (PDF)pny.com/File%20Library/Commercial/PNYPRO-CS900-Datasheet-High-Performance-Web.pdfRead 15 October 2026PNY CS900 datasheet, 2019, for 120GB to 1TB. Dimensions (L x W x H) row reads 100 x 70 x 7 mm for all capacities on that sheet

Length100.5Width69.85Height7mm(4 × 2.8 × 0.3 in)1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 2026Page prints 3.95 x 2.75 x 0.28 inches. The datasheet gives 100.50 x 69.85 x 7.0 mm, which is stored2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026SIZE row 100.50 x 69.85 x 7.0 mm, weight 34.5 g. Footnote 9 says length and width vary by 0.15 mm and weight by 1 g

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.

45g(1.6 oz)2Maker spec sheet (PDF)content.shi.com/cms-content/accelerator/media/pdfs/pny/pny-060223-pny-ssd-cs900-datasheet.pdfRead 15 October 2026Weight row reads 45g. The sheet gives one weight for all capacities. A 2.5 inch case weighs far more than an M.2 drive, so the peer-median warning against M.2 drives is expected4Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-.pdfRead 15 October 2026PNY CS900 sell sheet ver. 02-05-25 for 250GB to 2TB. Weight row reads 45g

34.5g(1.2 oz)1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 202634.5 g for every capacity2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026

In the box

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In the box

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SANDISK 520 SATA SSD1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 2026In The Box row: SANDISK 520 SATA SSD

Cables includediCables supplied with an external drive.

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Links

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Product page

www.pny.com/ssd-cs9001Maker product pagepny.com/ssd-cs900Read 15 October 2026PNY US product page, titled CS900 2.5 inch SATA III SSD. It shows the 8TB model (SKU SSD7CS900-8TB-RB) with a 2026 copyright line

www.sandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssd1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 2026

Spec sheet

www.pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-11-26-25.pdf3Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-11-26-25.pdfRead 15 October 2026PNY CS900 2.5-inch SATA III sell sheet ver. 11-19-25, linked from PNY's SSD support page as the current collateral. It lists 250GB, 500GB, 1TB, 2TB and 4TB

documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdf2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/520-sata-ssd/data-sheet-520-sata-ssd.pdfRead 14 October 2026

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.

3years1Maker product pagepny.com/ssd-cs900Read 15 October 2026Page reads 3-year limited warranty or TBW. The US warranty document gives the TBW limits3Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/pny-ssd-cs900-sell-sheet-11-26-25.pdfRead 15 October 20263-Year Limited Warranty or TBW. A footnote says to see PNY's website for the warranty in your region. The base term is stored from the US warranty document5Maker spec sheet (PDF)pny.com/file%20library/company/support/product%20brochures/solid%20state%20drives/solid-state-drive-warranty-v01.02.2025.pdfRead 15 October 2026Duration column reads 3 Years for the 2.5 inch SATA CS900. Coverage ends at the term or at the TBW, whichever comes first. The document is in USD and names PNY's US service line

5years1Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-520-sata-ssdRead 14 October 20265-year limited warranty, or the TBW limit, whichever occurs first

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