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Sandisk Optimus GX 7100

SandiskSSD

Optimus GX 7100

Released January 2025.2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-7100-internal-nvme-ssdRead 14 October 2026Maker page uses the Optimus name. The drive launched as WD_BLACK SN7100 and was renamed in January 2026 Last checked 16 October 2026.

Interface
PCIe NVMe
Form factor
M.2 2280
Capacity
500 GB, 1 TB, 2 TB, 4 TB
Read speed
7,250MB/s

43 of 63 fields known.

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At a glance

All specs

SourceCalculated

General

Series
Optimus GX2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-7100-internal-nvme-ssdRead 14 October 2026Maker line name is SANDISK Optimus GX, model 7100
Model numbers
SDSP71500GAN, SDSP71500GAN-000E0, WDS500G4X0E-00CJA0, SDSP71100TAN, SDSP71100TAN-000E0, WDS100T4X0E-00CJA0, SDSP71200TAN, SDSP71200TAN-000E0, WDS200T4X0E-00CJA0, SDSP71400TAN, SDSP71400TAN-000E0, WDS400T4X0E-00CJA01Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 20262Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-7100-internal-nvme-ssdRead 14 October 2026SKU codes carry a -000E0 suffix3Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/wd-black-ssd/data-sheet-wd-black-sn7100-nvme-ssd.pdfRead 14 October 2026WD_BLACK SN7100 datasheet, July 2025. Model numbers WDS500G4X0E-00CJA0, WDS100T4X0E-00CJA0, WDS200T4X0E-00CJA0 and WDS400T4X0E-00CJA0. Same speeds, IOPS, TBW, size, weight and 0 to 85 C range as the Optimus datasheet, which is why the legacy codes are listed on the same rows5Reviewtomshardware.com/pc-components/ssds/wd-black-sn7100-ssd-reviewRead 14 October 2026Legacy WD_BLACK part numbers WDS500G4X0E, WDS100T4X0E and WDS200T4X0E, listed without the maker suffix
GTIN / EAN
Not available
Announced
Not available
Status
Available2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-7100-internal-nvme-ssdRead 14 October 2026Listed for sale on sandisk.com in 500GB, 1TB, 2TB and 4TB
Predecessor
Not available
Successor
Not available
Launch price (US)
$139.995Reviewtomshardware.com/pc-components/ssds/wd-black-sn7100-ssd-reviewRead 14 October 2026Spec table pricing row: 500GB $54.99, 1TB $84.99, 2TB $139.99 at review time, 12 March 2025. These match the review's launch coverage. No launch MSRP found for the 4TB, which came after launch
Launch price (EU)
Not available
Markets
Not available
Colours
Black2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-7100-internal-nvme-ssdRead 14 October 2026
Form factor
M.2 22801Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026
Capacity
500 GB, 1 TB, 2 TB, 4 TB1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026

Interface

Interface
PCIe NVMe1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026PCIe 4.0 x4 NVMe 2.0. Footnote says it is backwards compatible with PCIe 3.0 x4, 3.0 x2, 3.0 x1 and lower
PCIe generation
41Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026
PCIe lanes
41Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026
NVMe version
2.01Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026Datasheet reads NVMe 2.0. Tom's Hardware lists NVMe 1.4, ServeTheHome's CrystalDiskInfo shows NVMe 2.0, so the datasheet value is stored7Reviewservethehome.com/wd-black-sn7100-2tb-nvme-ssd-reviewRead 14 October 2026CrystalDiskInfo confirms PCIe 4.0 x4 speeds using NVMe 2.0
Detachable cable
Not available

Hardware

Controller
Sandisk Polaris 35Reviewtomshardware.com/pc-components/ssds/wd-black-sn7100-ssd-reviewRead 14 October 2026Spec table reads Polaris 3 (Proprietary) on all capacities. The maker does not name the controller9Reviewpcworld.com/article/2592443/wd-black-sn7100-ssd-review.htmlRead 14 October 2026Describes a Sandisk A101-000172-A1 controller. Tom's Hardware names it Polaris 3
Flash type
TLC1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026
Flash memory
Sandisk BiCS8 TLC1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026NAND row reads SANDISK TLC 3D CBA NAND and the text says 8th generation SANDISK BiCS TLC 3D CBA NAND5Reviewtomshardware.com/pc-components/ssds/wd-black-sn7100-ssd-reviewRead 14 October 2026Spec table reads Sandisk 218-Layer TLC (BiCS8)9Reviewpcworld.com/article/2592443/wd-black-sn7100-ssd-review.htmlRead 14 October 2026BiCS8 NAND. ServeTheHome writes BiCS6 162-layer, which disagrees with the maker, Tom's Hardware and PCWorld, and is not used
Flash layers
2185Reviewtomshardware.com/pc-components/ssds/wd-black-sn7100-ssd-reviewRead 14 October 2026218 layers
DRAM cache
None, uses host memory (HMB)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026DRAM cache row reads Host Memory Buffer, so the drive has no DRAM chip5Reviewtomshardware.com/pc-components/ssds/wd-black-sn7100-ssd-reviewRead 14 October 2026Spec table lists N/A (HMB) on all capacities9Reviewpcworld.com/article/2592443/wd-black-sn7100-ssd-review.htmlRead 14 October 2026Host memory buffer, DRAM-less design
DRAM cache size
Not available
Component sides
Single-sided1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026Form factor reads M.2 2280-S3-M for every capacity. In the M.2 module naming S is single-sided5Reviewtomshardware.com/pc-components/ssds/wd-black-sn7100-ssd-reviewRead 14 October 2026Review says the drive is single-sided with one NAND flash package. A 4TB would need two packages, which TH did not yet test9Reviewpcworld.com/article/2592443/wd-black-sn7100-ssd-review.htmlRead 14 October 2026Single-sided, 2280, 22 mm wide and 80 mm long

Performance

Sequential read (claimed)
7,250MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026Product specifications table. Sequential 1MB at queue depth 8, 1 thread, up to. 6,800, 7,250, 7,250 and 7,000 MB/s for 500GB, 1TB, 2TB and 4TB. Based on internal testing, host not named
Sequential write (claimed)
6,900MB/s1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 20265,800, 6,900, 6,900 and 6,700 MB/s for 500GB, 1TB, 2TB and 4TB
Random 4K read (claimed)
1,000,000IOPS1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026Random 4KB at queue depth 32, 16 threads, up to. 760K, 1M, 1M and 900K IOPS by capacity
Random 4K write (claimed)
1,400,000IOPS1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 20261.2M, 1.4M, 1.4M and 1.35M IOPS by capacity, same test settings

Endurance and reliability

Endurance (TBW)
1,200TB1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026300, 600, 1,200 and 2,400 TBW by capacity, JEDEC client workload JESD219. Warranty is 5 years or the TBW, whichever comes first
MTBF or MTTF (claimed)
1,750,000h1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026Published as MTTF up to 1.75M hours, from internal Telcordia SR-332 stress testing at 25 C. It is not an MTBF
Operating temperature
Min0Max85°C1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 20260 to 85 C as reported by the drive. The non-operating range is not stored

Power

Power while reading (claimed)
3.7W1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026Average active power read, IOMeter 1.1.0 burst sequential read, 10 second moving average. 3.4, 3.4, 3.7 and 4.1 W by capacity
Power while writing (claimed)
3.9W1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026Average active power write, same method. 3.5, 3.7, 3.9 and 4.0 W by capacity
Max power consumption (claimed)
Not available
Average power in light use (claimed)
Not available
Idle power (claimed)
Not available
Sleep power (claimed)
5mW1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026Sleep (PS4), 5 mW at every capacity. The datasheet lists no idle figure

Measured

Sequential read (measured)
7,201MB/s8Reviewservethehome.com/wd-black-sn7100-2tb-nvme-ssd-review/2Read 14 October 20262TB, CrystalDiskMark 8.0.4 x64, 1GiB test size, five runs, SEQ1M Q8T1 read 7,200.55 MB/s. The screenshot shows the drive as C: with 64% used (1192 of 1863 GiB). Values read from the CrystalDiskMark screenshot. The 8GB test shows a large write drop
Sequential write (measured)
5,855MB/s8Reviewservethehome.com/wd-black-sn7100-2tb-nvme-ssd-review/2Read 14 October 2026SEQ1M Q8T1 write 5,855.22 MB/s, same run
Random 4K read at queue depth 1 (measured)
106.78MB/s8Reviewservethehome.com/wd-black-sn7100-2tb-nvme-ssd-review/2Read 14 October 2026RND4K Q1T1 read 106.78 MB/s, same screenshot
Random 4K write at queue depth 1 (measured)
287.89MB/s8Reviewservethehome.com/wd-black-sn7100-2tb-nvme-ssd-review/2Read 14 October 2026RND4K Q1T1 write 287.89 MB/s, same screenshot
Write cache size (measured)
Not available
Write speed after the cache (measured)
2,860MB/s6Reviewtomshardware.com/pc-components/ssds/wd-black-sn7100-ssd-review/2Read 14 October 20262TB, 15-minute Iometer sequential write. About 6.5 GB/s in SLC mode, then TLC mode with writing around 2.86 GB/s, then about 850 MB/s in a semi-folding state. The TLC mode figure is stored. Intel Core i9-12900K, Asus ROG Maximus Z790 Hero, drive prefilled to 50%, tested as a secondary device. ServeTheHome's 800 MB/s is its lowest steady point, a different state.
3DMark Storage Benchmark
Not available
Highest temperature under load (measured)
64°C6Reviewtomshardware.com/pc-components/ssds/wd-black-sn7100-ssd-review/2Read 14 October 20262TB bare drive. Maximum 64 C during testing, usually under 60 C. Primary composite sensor, about 22 C ambient, active cooling unless noted, Intel Core i9-12900K on Asus ROG Maximus Z790 Hero, drive prefilled to 50% and tested as a secondary device. The review does not say a heatsink was fitted. ServeTheHome logged a 59 C peak without a heatsink or active cooling with HWMonitor
Idle power (measured)
Not available

Cooling and build

Heatsink
Without heatsink1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026Bare M.2 2280 module, 2.38 mm thick, and the datasheet and product page list no heatsink version
RGB lighting
Not available
Dust and water rating
Not available
Drop test height
Not available

Security and software

Security
TCG Pyrite (no encryption), Password protection1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026Datasheet reads TCG Pyrite 2.01 and ATA Security passthrough over NVMe. Pyrite has no encryption. ATA Security is the drive password feature, stored as password protection.
Software
SanDisk Dashboard1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026Featured software: SANDISK Dashboard (Windows only) and Acronis True Image for SANDISK

Compatibility

Platforms
Windows2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-7100-internal-nvme-ssdRead 14 October 2026Compatibility row reads Windows 10+, PCIe 4.0 x4 interface, M.2 2280 port. No PS5 or handheld claim on the page

Dimensions and weight

Front and side, drawn to scale.

Dimensions
Length80Width22Height2.38mm(3.1 × 0.9 × 0.1 in)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 202680 x 22 x 2.38 mm for 500GB to 4TB. Length and width vary by 0.15 mm
Weight
5.8g(0.2 oz)1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 20265.8 g for 500GB to 4TB, plus or minus 1 g

In the box

In the box
SANDISK Optimus GX 7100 NVMe SSD2Maker product pagesandisk.com/products/ssd/internal-ssd/sandisk-optimus-gx-7100-internal-nvme-ssdRead 14 October 2026In The Box reads SANDISK Optimus GX 7100 NVMe SSD
Cables included
Not available

Warranty

Manufacturer warranty (source market)
5years1Maker spec sheet (PDF)documents.sandisk.com/content/dam/asset-library/en_us/assets/public/sandisk/product/internal-drives/sandisk-optimus-gx/data-sheet-optimus-gx-7100-internal-nvme-ssd.pdfRead 14 October 2026

Compare with

Pick a SSD to see both side by side. Differences are marked yellow.

More SSD comparisons

Variants

Each variant lists only what differs from the specs above.

Model numberModel numbersLaunch price (US)ColoursCapacitySequential read (claimed)Sequential write (claimed)Random 4K read (claimed)Random 4K write (claimed)Endurance (TBW)Power while reading (claimed)Power while writing (claimed)Sequential read (measured)Sequential write (measured)Random 4K read at queue depth 1 (measured)Random 4K write at queue depth 1 (measured)Write speed after the cache (measured)Highest temperature under load (measured)HeatsinkIn the box
SDSP71500GANSDSP71500GAN, SDSP71500GAN-000E0, WDS500G4X0E-00CJA0$54.99Black500 GB6,800 MB/s5,800 MB/s760,000 IOPS1,200,000 IOPS300 TB3.4 W3.5 WNot availableNot availableNot availableNot availableNot availableNot availableWithout heatsinkSANDISK Optimus GX 7100 NVMe SSD
SDSP71100TANSDSP71100TAN, SDSP71100TAN-000E0, WDS100T4X0E-00CJA0$84.99Black1 TB7,250 MB/s6,900 MB/s1,000,000 IOPS1,400,000 IOPS600 TB3.4 W3.7 WNot availableNot availableNot availableNot availableNot availableNot availableWithout heatsinkSANDISK Optimus GX 7100 NVMe SSD
SDSP71200TANSDSP71200TAN, SDSP71200TAN-000E0, WDS200T4X0E-00CJA0$139.99Black2 TB7,250 MB/s6,900 MB/s1,000,000 IOPS1,400,000 IOPS1,200 TB3.7 W3.9 W7,201 MB/s5,855 MB/s106.78 MB/s287.89 MB/s2,860 MB/s64 °CWithout heatsinkSANDISK Optimus GX 7100 NVMe SSD
SDSP71400TANSDSP71400TAN, SDSP71400TAN-000E0, WDS400T4X0E-00CJA0Not availableBlack4 TB7,000 MB/s6,700 MB/s900,000 IOPS1,350,000 IOPS2,400 TB4.1 W4 WNot availableNot availableNot availableNot availableNot availableNot availableWithout heatsinkSANDISK Optimus GX 7100 NVMe SSD

Sources

We read 9 sources for this SSD. The numbers match the markers in the sheet.

  1. Read 14 October 2026Backs 29 fields
  2. Read 14 October 2026Backs 8 fields
  3. Read 14 October 2026Backs 2 fields
  4. Read 14 October 2026Backs 1 field
  5. Read 14 October 2026Backs 9 fields
  6. Read 14 October 2026Backs 3 fields
  7. Read 14 October 2026Backs 2 fields
  8. Read 14 October 2026Backs 4 fields
  9. Read 14 October 2026Backs 4 fields

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