SSDs / Compare

PNY CS900 vs Samsung 870 EVO

A

Product A: PNY

CS900

20 of 63 known

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B

Product B: Samsung

870 EVO

37 of 63 known

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Every value links to where we found it.

Only differences

APNY CS900

BSamsung 870 EVO

General

5 of 9 differ

Series

Not available

Not available

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

MZ-77E250BW, MZ-77E250B/AM, MZ-77E250B/EU, MZ-77E250B/CN, MZ-77E250B/KR, MZ-77E500BW, MZ-77E500B/AM, MZ-77E500B/EU, MZ-77E500B/CN, MZ-77E500B/KR, MZ-77E1T0BW, MZ-77E1T0B/AM, MZ-77E1T0B/EU, MZ-77E1T0B/CN, MZ-77E2T0BW, MZ-77E2T0B/AM, MZ-77E2T0B/EU, MZ-77E2T0B/CN, MZ-77E4T0BW, MZ-77E4T0B/AM, MZ-77E4T0B/EU, MZ-77E4T0B/CN, MZ-77E8T0B/AM, MZ-77E8T0B/EU1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Product lineup table lists the model codes with the suffixes BW, B/AM, B/EU and B/CN for every capacity, and B/KR for 250GB and 500GB. The 8TB codes come from the Samsung pages below7Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-8tb-sata-3-2-5-ssd-mz-77e8t0b-euRead 15 October 2026The page URL and title give MZ-77E8T0B/EU. The Samsung US page gives MZ-77E8T0B/AM. No BW code was found for 8TB8Maker product pagesamsung.com/us/memory-storage/sata-ssd/870-evo-sata-2-5-ssd-1tb-sku-mz-77e1t0b-amRead 15 October 2026The page lists MZ-77E1T0 / MZ-77E1T0B/AM for 1TB and the 8TB SKU as MZ-77E8T0B/AM

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

8806090545931, 8806090545924, 8806090545917, 8806090545900, 880609054589416Retailer pagecompuram.biz/ssd/client/sata/samsung-870-evo-ssd/mz-77e1t0b-eu-m10e95.htmRead 15 October 2026GTIN row reads 8806090545917 for MZ-77E1T0B/EU. The 2TB page (mz-77e2t0b-eu-m10e96) reads 8806090545900 and the 4TB page (mz-77e4t0b-eu-m10e98) reads 880609054589417Retailer pageindustry-electronics.de/samsung/mz-77e250b-eu-ssd-sata-2-5-250gb-870-evo-series-druckansicht-539215.htmRead 15 October 2026EAN-Code 8806090545931 for MZ-77E250B/EU18Retailer pageindustry-electronics.de/samsung/mz-77e500b-eu-ssd-500gb-2-5-6.3cm-sataiii-870-evo-retail-druckansicht-539209.htmRead 15 October 2026EAN-Code 8806090545924 for MZ-77E500B/EU

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

Not available

19 January 20219Press releasenews.samsung.com/us/storage-memory-sata-ssd-870-evoRead 15 October 2026Samsung Electronics America announced the 870 EVO on 2021-01-19 (post date in the Samsung US newsroom)

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

Available8Maker product pagesamsung.com/us/memory-storage/sata-ssd/870-evo-sata-2-5-ssd-1tb-sku-mz-77e1t0b-amRead 15 October 2026Samsung US sells the drive in 2026 and the page highlights capacities from 250GB to 8TB and up to 4,800 TBW

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.

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

$249.999Press releasenews.samsung.com/us/storage-memory-sata-ssd-870-evoRead 15 October 2026The 870 EVO is available in 250GB for $39.99, 500GB for $69.99, 1TB for $129.99, 2TB for $249.99 and 4TB for $479.99. These are US launch prices. Tax is not included

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

€269.910Press releasenews.samsung.com/de/samsung-veroeffentlicht-ssd-870-evoRead 15 October 2026German press release: recommended retail prices as of January 2021 including 19 percent VAT. 250GB 39.90 EUR, 500GB 69.90 EUR, 1TB 139.90 EUR, 2TB 269.90 EUR and 4TB 549.90 EUR. The release says the 870 EVO is available from January 202111Press articlepcgameshardware.de/SSD-Hardware-255552/News/Samsung-870-Evo-SATA-8-TB-Preis-Release-1523415Read 15 October 2026PC Games Hardware update of 2026-04-09 says Samsung officially announced the 870 EVO 8TB on 2026-04-08 with a recommended retail price of 2,640.99 EUR in Germany. The article does not say whether VAT is included, and the street price was about 1,400 EUR. The figure is stored as reported

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

Black8Maker product pagesamsung.com/us/memory-storage/sata-ssd/870-evo-sata-2-5-ssd-1tb-sku-mz-77e1t0b-amRead 15 October 2026The page names the gallery images 870 EVO SATA 2.5 inch SSD Black

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 spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Form Factor row reads 2.5 inch

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

250 GB, 500 GB, 1 TB, 2 TB, 4 TB, 8 TB1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Capacity row lists 250GB, 500GB, 1TB, 2TB and 4TB. Footnote 1 says 1GB equals 1,000,000,000 bytes7Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-8tb-sata-3-2-5-ssd-mz-77e8t0b-euRead 15 October 2026Capacity row reads 8 TB (1 GB = 1 Billion byte by IDEMA). Samsung says the 870 EVO is available in capacities up to 8TB8Maker product pagesamsung.com/us/memory-storage/sata-ssd/870-evo-sata-2-5-ssd-1tb-sku-mz-77e1t0b-amRead 15 October 2026Highlights: Storage capacities from 250GB to 8TB11Press articlepcgameshardware.de/SSD-Hardware-255552/News/Samsung-870-Evo-SATA-8-TB-Preis-Release-1523415Read 15 October 2026The 8TB model was first spotted in a Geizhals listing in March 2026, then announced by Samsung on 2026-04-08

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 spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Interface row reads SATA 6 Gb/s, compatible with SATA 3 Gb/s and 1.5 Gb/s

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.

Not available

Not available

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

Not available

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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.

Not available

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

Not available

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Hardware

6 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.

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

Samsung MKX1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Controller row reads Samsung MKX Controller for all capacities2Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e1t0b-euRead 15 October 2026Controller row reads Samsung MKX Controller12Reviewtomshardware.com/reviews/samsung-870-evo-sata-ssd-review-the-best-just-got-betterRead 15 October 2026Review: the MKX Metis SATA 6Gbps controller with eight NAND channels, the same one as in the 870 QVO. The specs table agrees with the maker's MKX name

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)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026NAND Flash Memory row reads Samsung V-NAND 3bit MLC. Three bits per cell is TLC

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

Not available

Samsung V-NAND V6 TLC12Reviewtomshardware.com/reviews/samsung-870-evo-sata-ssd-review-the-best-just-got-betterRead 15 October 2026Review: Samsung's 6th-gen 512Gb 128-layer V-NAND TLC. The specs table lists Samsung 128L TLC for all capacities13Reviewkitguru.net/components/ssd-drives/simon-crisp/samsung-ssd-870-evo-1tb-review/all/1Read 15 October 2026KitGuru calls it Samsung 6th generation 1xx layer V-NAND 3-bit MLC (TLC) with the MKX controller and LPDDR4 cache

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

Not available

12812Reviewtomshardware.com/reviews/samsung-870-evo-sata-ssd-review-the-best-just-got-betterRead 15 October 2026Review and specs table both say 128-layer. KitGuru quotes Samsung's description of a 136-layer mold stack for the same flash, so 128 is the layer count of memory cells as Tom's states it13Reviewkitguru.net/components/ssd-drives/simon-crisp/samsung-ssd-870-evo-1tb-review/all/1Read 15 October 2026KitGuru says Samsung did not state a layer count and quotes a 136-layer mold stack. Tom's Hardware gives 128 layers, which is stored

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

DRAM1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026DRAM Cache Memory row lists LPDDR4 for every capacity12Reviewtomshardware.com/reviews/samsung-870-evo-sata-ssd-review-the-best-just-got-betterRead 15 October 2026Review opened a 1TB and a 4TB sample and found Samsung LPDDR4 next to the controller, 1GB on the 1TB and 4GB on the 4TB

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

2GB1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026DRAM Cache Memory row: 512MB LPDDR4 (250GB and 500GB), 1GB (1TB), 2GB (2TB), 4GB (4TB). The 8GB figure for 8TB is on the Samsung UK 8TB page2Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e1t0b-euRead 15 October 2026Cache Memory row reads Samsung 1 GB Low Power DDR4 SDRAM7Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-8tb-sata-3-2-5-ssd-mz-77e8t0b-euRead 15 October 2026Cache Memory row reads 8GB LPDDR4. The Storage Memory row reads Samsung V-NAND TLC and the Controller row reads Samsung in-house Controller, without the MKX name

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

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Performance

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

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 spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Sequential Read 560 MB/s for all capacities. Footnote 2: sequential figures use CrystalDiskMark v5.0.2 on an Intel Core i7 at 4.00 GHz (printed as i7-470K), DDR3 1600 MHz 8GB, Windows 10 Pro 64-bit and an ASUS Z97 PRO board

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

530MB/s1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Sequential Write 530 MB/s for all capacities. Footnote 3: measured with Intelligent TurboWrite. After the TurboWrite region the speed is 300 MB/s (250GB and 500GB) or 530 MB/s (1TB, 2TB and 4TB)

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

98,000IOPS1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 20264KB Random Read (QD32) up to 98,000 IOPS. The QD1 figure is 13,000 IOPS. Footnote 2: random figures use IOmeter 1.1.0 on the same test system

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

88,000IOPS1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 20264KB Random Write (QD32) up to 88,000 IOPS. The QD1 figure is 36,000 IOPS

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

1,200TB1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026TBW row: 150, 300, 600, 1,200 and 2,400 TB for 250GB to 4TB. Footnote 5: tested to the JESD218 standard. Footnote 8: the warranty ends at 5 years or the TBW, whichever comes first7Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-8tb-sata-3-2-5-ssd-mz-77e8t0b-euRead 15 October 2026Warranty row: 5 Years Limited Warranty or 4,800 TBW. The footnote lists 150 to 4,800 TBW for 250GB to 8TB

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

1,500,000h1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026MTBF 1.5 million hours for every capacity

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 spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Operating temperature 0 C to 70 C. The non-operating range of -40 C to 85 C is not stored

Power

5 of 6 differ

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

Not available

2.2W1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Active (Avg.) Read/Write: 2.0W/2.2W (250GB and 500GB), 2.0W/2.5W (1TB), 2.2W/2.5W (2TB and 4TB). Footnote 4: measured with IOmeter 1.1.0 on an Intel Core i7-7700K at 4.2GHz, Samsung DDR4 16GB, a Gigabyte GA-Z270X board and Windows 10 Pro7Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-8tb-sata-3-2-5-ssd-mz-77e8t0b-euRead 15 October 2026Average Power Consumption (system level): Read 2.2 W and Write 2.6 W. Samsung's 8TB page gives no test conditions

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

2.5W1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Active (Avg.) write figure from the same row7Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-8tb-sata-3-2-5-ssd-mz-77e8t0b-euRead 15 October 2026Average write figure of 2.6 W from the same row

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

4.5W2Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e1t0b-euRead 15 October 2026Average Power Consumption (system level) row: Average 2.5 W, Maximum 4.0 W (burst mode) for 1TB. Samsung gives no read and write split for the maximum, so the maximum is stored in the max field3Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e250b-euRead 15 October 2026Average 2.2 W, Maximum 3.5 W (burst mode) for 250GB4Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e500b-euRead 15 October 2026Average 2.2 W, Maximum 3.5 W (burst mode) for 500GB5Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e2t0b-euRead 15 October 2026Average 2.5 W, Maximum 4.5 W (burst mode) for 2TB. This is the base value6Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e4t0b-euRead 15 October 2026Average 2.5 W, Maximum 5.0 W (burst mode) for 4TB

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

35mW1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Idle with DIPM on: 30 mW (250GB, 500GB and 1TB) and 35 mW (2TB and 4TB). DIPM is the SATA link power management that allows the Slumber state, so it is stored as low-power idle7Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-8tb-sata-3-2-5-ssd-mz-77e8t0b-euRead 15 October 2026Power consumption (Idle): Max. 40 mW. The page does not name DIPM. The 250GB to 1TB pages give Max. 30 mW and the data sheet gives 30 mW with DIPM on, so the same kind of figure is assumed

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

Not available

4.5mW1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Devslp row: 2.5 mW (250GB and 500GB), 3.0 mW (1TB), 4.5 mW (2TB) and 6.5 mW (4TB). Devslp is the SATA DevSleep state

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.

Not available

Not available

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

Not available

Not available

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

Not available

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

Not available

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

Not available

Not available

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

Not available

Not available

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

Not available

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.

Not available

Not available

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

Not available

Not available

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.

Not available

Not available

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

Not available

Not available

Dust and water ratingiPublished IP rating of an external drive.

Not available

Not available

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

Not available

Not available

Security and software

2 of 2 differ

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

Not available

AES 256-bit hardware encryption, TCG Opal 2.0, IEEE 1667 (eDrive)1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Data Security row: AES 256-bit Full Disk Encryption, TCG/Opal V2.0 and Encrypted Drive (IEEE1667)

Software

Not available

Samsung Magician2Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e1t0b-euRead 15 October 2026Management SW row: Magician Software for SSD management and Data Migration Software for SSD upgrade9Press releasenews.samsung.com/us/storage-memory-sata-ssd-870-evoRead 15 October 2026The spec table lists Samsung Magician as management software

Compatibility

1 of 1 differ

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

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

PC (no OS named)1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Usage application row reads Client PCs. No operating system is named, so PC is stored

Dimensions and weight

2 of 2 differ

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

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

Length100Width69.85Height6.8mm(3.9 × 2.8 × 0.3 in)1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Dimensions row reads 100 x 69.85 x 6.8 (mm). The row does not name the axes, so 100 is the length, 69.85 the width and 6.8 the thickness

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

46g(1.6 oz)2Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e1t0b-euRead 15 October 2026Full specifications, Weight row: Approx. 45.0g for the 1TB model3Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e250b-euRead 15 October 2026Weight row: Approx. 45.0g for the 250GB model4Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e500b-euRead 15 October 2026Weight row: Approx. 45.0g for the 500GB model5Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e2t0b-euRead 15 October 2026Weight row: Approx. 46.0g for the 2TB model. This is the base value6Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-sata-3-2-5-ssd-mz-77e4t0b-euRead 15 October 2026Weight row: Approx. 48.0g for the 4TB model7Maker product pagesamsung.com/uk/business/memory-storage/sata-ssd/870-evo-8tb-sata-3-2-5-ssd-mz-77e8t0b-euRead 15 October 2026Weight row: Approx. 48.0g

In the box

1 of 2 differ

In the box

Not available

Samsung SSD 870 EVO 250GB, Samsung SSD 870 EVO 500GB, Samsung SSD 870 EVO 1TB, Samsung SSD 870 EVO 2TB, Samsung SSD 870 EVO 4TB, Warranty Statement1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Product lineup table, Box Contents column: the drive of that capacity and a Warranty Statement. The base lists every box, and each row lists its own

Cables includediCables supplied with an external drive.

Not available

Not available

Links

Not compared

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.samsung.com/us/memory-storage/sata-ssd/870-evo-sata-2-5-ssd-1tb-sku-mz-77e1t0b-am8Maker product pagesamsung.com/us/memory-storage/sata-ssd/870-evo-sata-2-5-ssd-1tb-sku-mz-77e1t0b-amRead 15 October 2026Samsung US product page of the 1TB model. It lists 250GB, 500GB, 1TB, 2TB, 4TB and 8TB

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

download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdf1Maker spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Samsung V-NAND SSD 870 EVO 2021 Data Sheet, Revision 1.1, PDF created 2021-01-06. Revision history: 1.0 initial release in November 2020, 1.1 in January 2021. A later copy named Rev1.1_230509 has the same text. It covers 250GB to 4TB and not the 8TB model

Manual

Not available

Not available

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

Not available

Not available

Warranty

1 of 1 differ

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

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 spec sheet (PDF)download.semiconductor.samsung.com/resources/data-sheet/Samsung_SSD_870_EVO_Data_Sheet_Rev1.1.pdfRead 15 October 2026Warranty period 5 year limited. The data sheet names no market

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