SSDs / Compare

Samsung 870 EVO vs Sandisk 520 SATA SSD

A

Product A: Samsung

870 EVO

37 of 63 known

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B

Product B: Sandisk

520 SATA SSD

25 of 63 known

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Only differences

ASamsung 870 EVO

BSandisk 520 SATA SSD

General

5 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.

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

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

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

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.

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/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.

$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/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.

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

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 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/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.

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

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.

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/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.

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

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.

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

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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/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/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/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.

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/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.

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/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.

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

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.

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

2,250,000h1Maker 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°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°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.

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

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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.

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

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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.

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/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.

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

Not available

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/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.

Not available

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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

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)

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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/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

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

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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

Length100.5Width69.85Height7mm(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.

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

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

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

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

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/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.