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XPG S40G 256GB RGB 3D NAND PCIe Gen3x4 NVMe 1.3 M.2 2280 Internal SSD (AS40G-256GT-C)
XPG

XPG S40G 256GB RGB 3D NAND PCIe Gen3x4 NVMe 1.3 M.2 2280 Internal SSD (AS40G-256GT-C)

Bottom line: The XPG S40G 256GB RGB 3D NAND PCIe Gen3x4 NVMe 1.3 M.2 2280 Internal SSD ($51.99 on Amazon as of 2026-10-06): 3,500/3,000MB/s rated sequential read/write over PCIe Gen3x4; main trade-off: 256GB fills fast as a game drive; Windows alone eats a big share.

$51.99

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Buy on Amazon — $51.99 Compare to similar ssds & storage

By , Founder & Editor-in-Chief · Listing data updated

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.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 3,500/3,000MB/s rated sequential read/write over PCIe Gen3x4
  • ✓ Addressable RGB syncs with most major motherboard lighting software
  • ✓ 5-year limited manufacturer warranty
  • ✓ Standard M.2 2280 form factor fits most desktop and laptop boards

Cons

  • ✗ 256GB fills fast as a game drive; Windows alone eats a big share
  • ✗ Gen3x4 ceiling is half what a Gen4 drive delivers on newer boards
  • ✗ XPG notes speeds vary by capacity, so 256GB may trail the 3,500MB/s rating
  • ✗ RGB needs a motherboard header and software, adding setup for non-RGB builds

Manufacturer description

The XPG S40G 256GB is a PCIe Gen3x4 NVMe SSD built around the M.2 2280 form factor, and it targets builders who want addressable RGB inside the drive slot rather than only on the fans and RAM. XPG rates the S40G line at up to 3,500MB/s sequential read and 3,000MB/s sequential write, though those figures are capacity-dependent and the 256GB model sits at the entry point of the family. It supports the NVMe 1.3 command set and uses 3D NAND, so it drops into any modern desktop or laptop board with a free M.2 slot and Gen3 lanes. The RGB lighting is customizable and syncs with most control…

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SpecPicks Verdict

SpecPicks scored XPG S40G 256GB RGB 3D NAND PCIe Gen3x4 NVMe 1.3 M.2 2280 Internal SSD using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. XPG'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

How fast is the XPG S40G 256GB?

XPG rates the S40G at up to 3,500MB/s read and 3,000MB/s write over PCIe Gen3x4. XPG notes speeds may vary by capacity model, and 256GB is the smallest in the line.

Will this SSD fit my motherboard?

It is an M.2 2280 drive using a PCIe Gen3x4 interface with NVMe 1.3 support, so it fits any board with a free M.2 2280 slot wired for NVMe. Check your board manual for slot lane allocation.

Does the RGB lighting work with my motherboard software?

Yes. XPG states the lighting effects are customizable and compatible with most RGB software from the major motherboard makers, so it can sync with the rest of your build.

What warranty comes with the XPG S40G?

XPG lists a 5-year limited manufacturer warranty. Check the product listing for current terms and registration requirements in your region.

Is 256GB enough for gaming?

It is tight. After a Windows install you are left with room for a couple of large titles, so most gamers use a 256GB S40G as a boot or scratch drive and pair it with bulk storage.

Key Features

  • Pcie Gen 3x4 interface: R/W speed up to 3500/3000MB/s *May vary by capacity models
  • Nvme 1. 3 Supported, M. 2 2280 form factor
  • Customizable RGB lighting effects, compatible with most RGB software from major motherboard makers
  • Ideal for gaming, 3D modeling, graphic design, AI, edge computing, cloud, data analysis, and other IoT tasks
  • 5-Year Limited manufacturer

Full Specifications

BrandXPG
Color3500/3000MB/s
Weight40g
Model NameXPG SX8200 Pro
Read Speed3500 megabytes_per_second
Form FactorM.2 2280
Media Speed1900 megabytes_per_second
Model NumberAS40G256GTC
Built-In Mediacustomizable RGB lighting heatsink
Hard-Drive Size256 GB
Mfr Part NumberAS40G256GTC
Number of Items1
Special FeaturePortable
Installation TypeInternal Hard Drive
Compatible DevicesDesktop
Data Transfer Rate3938 megabits_per_second
Enclosure MaterialNAND flash memory
Additional FeaturesPortable
Hard Disk InterfacePCIE x 16
Warranty Description5-Year Limited Warranty

Ready to buy?

XPG S40G 256GB RGB 3D NAND PCIe Gen3x4 NVMe 1.3 M.2 2280 Internal SSD (AS40G-256GT-C) 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.

Buy on Amazon — $51.99

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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XPG S40G 256GB RGB 3D NAND PCIe Gen3x4 NVMe 1.3 M.2 2280 Internal SSD (AS40G-256GT-C)
$51.99
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