WD_Black SN770M 1TB M.2 2230 NVMeSSD - PCIe Gen 4.0, Speeds up to 5150 MB/s, for Handheld Gaming Devices and Compatible laptops, TLC 3D NAND, Great for Asus ROG Ally, Steam Deck, Microsoft Surface

Sandisk

Sandisk WD_Black SN770M 1TB M.2 2230 NVMeSSD

Name: WD_Black SN770M 1TB M.2 2230 NVMeSSD - PCIe Gen 4.0, Speeds up to 5150 MB/s, for Handheld Gaming Devices and Compatible laptops, TLC 3D NAND, Great
Brand: Sandisk
SKU: B0CHJXHVZM

Status: WD_Black SN770M 1TB M.2 2230 NVMeSSD - PCIe Gen… (1TB PCIe 4.0 NVMe SSD M.2 2230): Unavailable on Amazon as of 2026-10-06 22:13 UTC. Closest in-stock match (same 1TB PCIe 4.0 NVMe M.2 2230): Acer MA200 M.2 2230 SSD NVMe 1TB, $229.99 on Amazon as of 2026-10-06 04:35 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $229.99 🛒 Search eBay for this model

Bottom line: The Sandisk WD_Black SN770M 1TB M.2 2230 NVMeSSD: Rated up to 5,150 MB/s sequential on PCIe Gen 4.0 (1TB model); main trade-off: discontinued: Sandisk replaced it with the Optimus GX 7100M.

Unavailable on Amazon as of 2026-10-06 22:13 UTC

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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives with matching specs:

Same 1TB PCIe 4.0 NVMe M.2 2230: Acer MA200 M.2 2230 SSD NVMe 1TB — $229.99 on Amazon as of 2026-10-06 04:35 UTC (price may vary).

View Current Price — $229.99

Same 1TB PCIe 4.0 NVMe M.2 2230: TEAMGROUP MP44S SSD 1TB SLC Cache Gen 4x4 M.2… — $190.99 on Amazon as of 2026-10-06 10:12 UTC (price may vary).

View Current Price — $190.99

Same 1TB PCIe 4.0 NVMe M.2 2230: Kingston 1TB M.2 2230 PCIe Gen 4.0x4 NVMe SSD… — $248.88 on Amazon as of 2026-10-06 04:12 UTC (price may vary).

View Current Price — $248.88

Original listing (currently unavailable) → Compare to similar ssds & storage

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

Mike Perry — Hardware researcher since 2014. For SSDs and PC storage upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ Rated up to 5,150 MB/s sequential on PCIe Gen 4.0 (1TB model)
✓ M.2 2230 size fits ROG Ally, Steam Deck, and many Surface laptops
✓ TLC 3D NAND with Sandisk nCache 4.0 caching
✓ Supports Microsoft DirectStorage for faster game asset streaming

Cons

✗ Discontinued: Sandisk replaced it with the Optimus GX 7100M
✗ Only fits devices with an M.2 2230 slot, not 2242 or 2280
✗ Actual speed depends on your device's PCIe generation and lanes
✗ PCIe Gen 4 drive with no Gen 5 speeds for newer desktops

Manufacturer description

The Sandisk WD_Black SN770M 1TB is an M.2 2230 NVMe SSD for devices that use the short 2230 slot. That includes handheld gaming PCs such as the ASUS ROG Ally and Valve Steam Deck, plus many Microsoft Surface and Dell laptops. On the PCIe Gen 4.0 interface, the 1TB model is rated for sequential speeds up to 5,150 MB/s, so games install faster and levels load sooner than on smaller or slower factory drives. The drive uses TLC 3D NAND and Sandisk's nCache 4.0 caching technology. It also supports Microsoft DirectStorage, which lets compatible Windows games stream assets straight from the SSD…

SpecPicks Verdict

SpecPicks scored Sandisk WD_Black SN770M 1TB M.2 2230 NVMeSSD using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Sandisk's ssds & storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will the WD_Black SN770M fit my Steam Deck or ASUS ROG Ally?

Yes. The SN770M is an M.2 2230 NVMe SSD, and Sandisk lists both the ASUS ROG Ally and Valve Steam Deck as compatible devices. Other handhelds and laptops also work if they have an M.2 2230 slot.

How fast is the WD_Black SN770M 1TB?

Sandisk rates the 1TB and 2TB models for speeds up to 5,150 MB/s over PCIe Gen 4.0. Your actual speed depends on your device's PCIe support, and older or lane-limited hosts will run it slower.

Can I use the SN770M to upgrade a Microsoft Surface or Dell laptop?

Sandisk says it works in many Microsoft Surface and Dell models that use M.2 2230 SSDs. Check your laptop's manual or manufacturer specs for the slot size and whether the drive is user-replaceable before you buy.

Is the WD_Black SN770M discontinued?

Yes. Sandisk says this model has been replaced by its newer generation, the Sandisk Optimus GX 7100M NVMe SSD. You may still find SN770M stock, but availability can vary.

What kind of NAND does the SN770M use, and does it support DirectStorage?

It uses TLC 3D NAND with Sandisk's nCache 4.0 technology. It also supports Microsoft DirectStorage, which lets compatible Windows games load assets directly from the SSD.

Key Features

This product has been replaced by our latest generation. Please search for the SANDISK Optimus GX 7100M NVMe SSD
Supercharge compatible handheld devices such as the ASUS ROG Ally and Valve Steam Deck with speeds up to 5,150 MB/s[2] (1TB and 2TB models) for blazingly quick game installations and level loads.
Play more games, larger games wherever you are with up to 2TB of trusted SANDISK TLC 3D NAND storage.
Get ready for an immersive experience with exclusive gaming features including PCIe Gen 4.0[3], Sandisk's nCache 4.0 technology, and Microsoft’s DirectStorage Support.
Revitalize and expand the storage of your M.2 2230 SSD compatible laptop such as many Microsoft Surface and Dell models.
POWERED BY SANDISK: The WD_BLACK, WD Blue, and WD Green flash products are manufactured by Sandisk Technologies, Inc. or its affiliates and distributed under license from Western Digital Corporation.

Full Specifications

Size	1TB
Brand	Sandisk
Color	Black
Model	WDBDNH0010BBK-WRSN
Warranty	5 Year Limited Warranty
UnitCount	1
ReleaseDate	2024-01-01T00:00:01Z
Manufacturer	Sandisk Technologies, Inc.
ItemPartNumber	WDBDNH0010BBK-WRSN
Full listing title	WD_Black SN770M 1TB M.2 2230 NVMeSSD - PCIe Gen 4.0, Speeds up to 5150 MB/s, for Handheld Gaming Devices and Compatible laptops, TLC 3D NAND, Great for Asus ROG Ally, Steam Deck, Microsoft Surface

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WD_Black SN770M 1TB M.2 2230 NVMeSSD - PCIe Gen 4.0, Speeds up to 5150 MB/s, for Handheld Gaming Devices and Compatible laptops, TLC 3D NAND, Great for Asus ROG Ally, Steam Deck, Microsoft Surface is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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