SSDs / Compare

Samsung 870 EVO vs Western Digital WD Blue SA510

A

Product A: Samsung

870 EVO

37 of 63 known

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B

Product B: Western Digital

WD Blue SA510

29 of 63 known

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Every value links to where we found it.

Only differences

ASamsung 870 EVO

BWestern Digital WD Blue SA510

General

6 of 9 differ

Series

Not available

WD Blue1Maker product pagesandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssdRead 20 October 2026The page title and copy name the drive WD Blue SA510 SATA SSD, part of the WD Blue range

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

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

WDS250G3B0A, WDS500G3B0A, WDS100T3B0A, WDS200T3B0A, WDS400T3B0A, WDS500G5B0A, WDS100T5B0A, WDS200T5B0A, WDS400T5B0A1Maker product pagesandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssdRead 20 October 2026Spec blocks list WDS250G3B0A (250GB), WDS500G5B0A (500GB), WDS100T5B0A (1TB), WDS200T5B0A (2TB) and WDS400T3B0A (4TB). The store SKU suffixes -00AXR0, -00LMP0 and -00C7K0 are not stored. The 5B0A codes are a newer series than the 3B0A codes of the 2022 product brief. Both series are stored as variant rows because their claims differ3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 2026German copy of the Western Digital product brief for the WD Blue SA510 (document code 02-00-WW-04-000064-AE02, September 2022, PDF made 2023-05-18), hosted by the retailer Bechtle. The maker's own copy returned 404. It lists the 2.5 inch codes WDS250G3B0A, WDS500G3B0A, WDS100T3B0A, WDS200T3B0A and WDS400T3B0A, and the M.2 2280 codes WDS...3B0B, which are another product

GTIN / EAN

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

718037884622, 718037884639, 7180378846536Retailer pageldlc.com/en/product/PB00503709.htmlRead 20 October 2026LDLC sheet for WDS100T3B0A (1TB, 2.5 inch). The EAN 0718037884653 is the UPC 7180378846537Retailer pageldlc.com/en/product/PB00503711.htmlRead 20 October 2026LDLC sheet for WDS500G3B0A-00AXR0 (500GB, 2.5 inch). The EAN 0718037884639 is the UPC 7180378846398Retailer pagekomputronik.pl/product/773712/wd-blue-sa510-250gb.htmlRead 20 October 2026Komputronik sheet for WDS250G3B0A (250GB), EAN 718037884622. No GTIN was found for the 2TB, 4TB or the 5B0A codes

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

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)

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Status

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

Available1Maker product pagesandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssdRead 20 October 2026The Sandisk US page lists the drive with per-capacity spec blocks and a data sheet link. Western Digital sold this drive. The page is now on sandisk.com and says Powered by Sandisk

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.

$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

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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.

€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

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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

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

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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 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

2.5-inch1Maker product pagesandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssdRead 20 October 20262.5-Inch row in every block. The title reads 2.5 inch 7mm cased. The M.2 2280 SA510 (WDS...3B0B) is a separate product

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.

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

250 GB, 500 GB, 1 TB, 2 TB, 4 TB1Maker product pagesandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssdRead 20 October 2026Capacity rows: 250GB, 500GB, 1TB, 2TB, 4TB. Data sheet footnote: 1GB = 1 billion bytes and 1TB = 1 trillion 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 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

SATA1Maker product pagesandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssdRead 20 October 2026Interface row reads SATA. The data sheet gives SATA III 6 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.

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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

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.

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

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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.

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

TLC2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026NAND Type row: SANDISK TLC 3D NAND for every capacity

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

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

Sandisk 3D TLC2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026The same row names the flash as SANDISK TLC 3D NAND. The data sheet gives no layer count and no flash generation. Third-party sites guess Kioxia BiCS5. None is a maker statement, so it is not stored

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

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

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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.

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

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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.

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

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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

3 of 4 differ

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

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

560MB/s2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Sequential Read up to 560 MB/s for every capacity. Footnote 2: 1 MB/s = 1 million bytes per second, based on internal testing. The host and the tool are not named3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 2026Sequential reads up to 555 MB/s (250GB) and 560 MB/s (500GB to 4TB). Footnote 6: based on internal testing, 1 MB/s = 1 million bytes per second

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

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)

520MB/s2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Sequential Write up to 525 (4TB), 520 (2TB), 520 (1TB) and 510 (500GB) MB/s3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 2026Sequential writes up to 440 (250GB), 510 (500GB) and 520 (1TB, 2TB, 4TB) MB/s

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.

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

89,000IOPS2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Random Read up to 85K (4TB), 89K (2TB), 89K (1TB) and 78K (500GB) IOPS. No queue depth is named3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 2026Random reads up to 80,000 (250GB) and 90,000 IOPS (500GB to 4TB). No queue depth is named

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.

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

75,000IOPS2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Random Write up to 76K (4TB), 75K (2TB), 74K (1TB) and 73K (500GB) IOPS. No queue depth is named3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 2026Random writes up to 78,000 (250GB), 82,000 (500GB and 1TB) and 87,000 IOPS (2TB and 4TB)

Endurance and reliability

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

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

700TB2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Endurance (TBW): 1000 (4TB), 700 (2TB), 400 (1TB), 300 (500GB). Footnote 4: JEDEC client workload JESD219. Footnote 5: the warranty ends at 5 years or the TBW limit, whichever comes first3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 2026Endurance (TBW): 100 (250GB), 200 (500GB), 400 (1TB), 500 (2TB), 600 (4TB). Footnote 7: JEDEC client workload JESD219

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

1,500,000h1Maker 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

2,250,000h2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026MTTF (up to hours) 2.25M for every capacity. Footnote 4: Mean Time To Failure from Telcordia SR-332 stress testing at 25 C, not a warranty. Stored as MTTF3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 2026MTTF up to 1.75 million hours for every capacity. Footnote 8: Telcordia stress tests, sample based, not a warranty. Stored as MTTF

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

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

Min0Max70°C2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Operating temperatures 0 C to 70 C. The non-operating range of -55 C to 85 C is not stored. Footnote 8: operating temperature is the temperature the drive reports3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 2026Operating temperatures 0 C to 70 C. Footnote 12: the SSD box is rated up to 60 C

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.

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

1.05W2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Average Active Power: 1090 (4TB), 1050 (2TB), 1010 (1TB) and 970 (500GB) mW. Footnote 3: measured during continuous sequential read or write activity, averaged over 10 microsecond intervals, with IOMeter and DIPM on. The row has no read and write split, so the figure is stored in both read and write

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.

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

1.05W2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Same Average Active Power figure as the read field. The data sheet gives no read and write split

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.

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

2.59W2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Max Read Operating and Max Write Operating, in mW. 4TB: 1800 and 4650. 2TB: 1520 and 2590. 1TB: 1490 and 1800. 500GB: 1510 and 1700. The higher one is stored3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 2026Max read operating and max write operating, in mW. 250GB, 500GB, 1TB: 1800 and 2000. 2TB: 1600 and 1500. 4TB: 1500 and 1500. Footnote 11: measured during continuous sequential read or write, averaged over 1 second intervals. The higher one is stored

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.

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

34mW2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Slumber: 33 (4TB), 34 (2TB), 31 (1TB) and 31 (500GB) mW. Slumber is the SATA low-power idle state3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 2026Slumber: 36 mW (250GB to 1TB), 62 (2TB) and 63 (4TB)

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

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

9mW2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026DevSlp: 10 (4TB), 9 (2TB), 10 (1TB) and 9 (500GB) mW. DevSleep is the SATA deepest sleep state3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 2026DevSlp: 12 mW (250GB to 1TB) and 5 mW (2TB and 4TB)

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.

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)

Not available

Software

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

SanDisk Dashboard1Maker product pagesandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssdRead 20 October 2026Page: free downloadable Sandisk Dashboard (Windows only) that monitors performance, temperature and used and available space. Acronis True Image for Sandisk data migration software is also offered as a download2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Highlights name the downloadable Sandisk Dashboard application (Windows only) and the Acronis True Image for Sandisk data migration 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.

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

Windows1Maker product pagesandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssdRead 20 October 2026Each block lists Compatibility Windows 10+. The page names no other system

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.

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

Length100.25Width69.9Height7mm(3.9 × 2.8 × 0.3 in)2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Physical Dimensions row: 100.25 mm x 69.9 mm x 7 mm for every capacity. Footnote 10: length, width and thickness may vary by plus or minus 0.1 mm. The row does not name the axes, so 100.25 is the length, 69.9 the width and 7 the thickness3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 20262.5 inch size 100.2 mm x 69.85 mm x 7 mm. The axes are not named, so 100.2 is the length, 69.85 the width and 7 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.

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

33.3g(1.2 oz)2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Weight row: 34.5 g (4TB), 33.3 g (2TB), 33.1 g (1TB) and 33 g (500GB), plus or minus 1 g. The Sandisk page prints 34.5 g for the 500GB, 1TB and 2TB blocks. The data sheet is preferred. The base is the 2TB column3Maker spec sheet (PDF)media.bechtle.com/asrc/180712/1c4b3d4ee288fc9434f5175bf56070570/c3/-/30f4e0dd49fc49b18a552c4c9448d267/wd-blue-sa510-2-tb-ssd-datenblatt-1Read 20 October 20262.5 inch weight 34.6 g plus or minus 1 g for every capacity

In the box

1 of 2 differ

In the box

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

WD Blue SA510 2.5” SATA SSD1Maker product pagesandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssdRead 20 October 2026In The Box row reads WD Blue SA510 2.5 inch SATA SSD. The Acronis True Image data migration software is a download, not a box item

Cables includediCables supplied with an external drive.

Not available

Not available

Links

Not compared

Product page

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

www.sandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssd1Maker product pagesandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssdRead 20 October 2026

Spec sheet

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

documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdf2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Sandisk data sheet for the WD Blue SA510 SATA SSD, dated January 2026. It lists 500GB, 1TB, 2TB and 4TB with the 5B0A codes WDS500G5B0A, WDS100T5B0A, WDS200T5B0A and WDS400T5B0A. It has no 250GB column. The base values of this product are the 2TB WDS200T5B0A column

Manual

Not available

Not available

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

Not available

Not available

Warranty

0 of 1 differ

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

5years1Maker spec sheet (PDF)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

5years1Maker product pagesandisk.com/products/ssd/internal-ssd/wd-blue-sa510-sata-2-5-ssdRead 20 October 20265-Year Limited Warranty in every block. The data sheet adds: 5 years or the TBW limit, whichever comes first. Regional terms are on the Sandisk support site2Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-blue-ssd/data-sheet-wd-blue-sa510-sata-ssd.pdfRead 20 October 2026Limited Warranty row: 5 years

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