XPG

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

Name: XPG S40G 256GB RGB 3D NAND PCIe Gen3x4 NVMe 1.3 M.2 2280 Internal SSD (AS40G-256GT-C)
Brand: XPG
SKU: B08RWG4HSD
Price: 51.99 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-20

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$51.99

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View Current Price on Amazon → Compare to similar ssds & storage

*Price sourced from Amazon.com. Last updated 2026-06-21. Price and availability subject to change.

Bottom line: The XPG S40G 256GB RGB 3D NAND PCIe Gen3x4 NVMe 1.3 M.2 2280 Internal SSD (AS40G-256GT-C) is a specs-and-price decision rather than a crowd-consensus one in the ssds & storage category, priced around $51.99. Check the specification table above against one or two close alternatives — on price and spec fit, not on star ratings.

Pros & Cons

Pros

✓ Pcie Gen 3x4 interface: R/W speed up to 3500/3000MB/s *May vary by capacity models
✓ Backed by XPG's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

The XPG S40G 256GB is a PCIe Gen3x4 NVMe SSD built on 3D NAND in the standard M.2 2280 form factor, and it targets builders who want RGB inside the drive itself rather than just around it. XPG rates the S40G line at up to 3,500MB/s sequential read and 3,000MB/s sequential write, with actual figures varying by capacity model. It speaks NVMe 1.3, so it drops into virtually any modern desktop or compact build with a free M.2 slot and boots as a primary drive or serves as a fast scratch disk. The customizable RGB lighting works with most RGB control software from the major motherboard makers…

SpecPicks Verdict

SpecPicks scored XPG S40G 256GB RGB 3D NAND PCIe Gen3x4 NVMe 1.3 M.2 2280 Internal… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis 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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

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, so check the listing spec table for this SKU.

Will the S40G fit my motherboard?

It is an M.2 2280 drive using NVMe 1.3 over PCIe Gen3x4, the most common M.2 size and interface. Any board with a free M.2 2280 NVMe slot will take it.

Does the RGB lighting work with my motherboard software?

XPG states the customizable RGB effects are compatible with most RGB software from major motherboard makers. Confirm your specific board's utility on the product listing before buying if lighting sync is the main draw.

Is 256GB enough for gaming?

It works as a boot drive or a fast home for a few active titles, but large modern games can consume 100GB or more each. Treat it as a boot and scratch drive, with bulk storage handled elsewhere.

What warranty does the XPG S40G come with?

XPG lists a 5-year limited manufacturer warranty on the S40G. Check the product listing for current terms and registration requirements in your region.

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

Brand	XPG
Color	3500/3000MB/s
Weight	40g
Model Name	XPG SX8200 Pro
Read Speed	3500 megabytes_per_second
Form Factor	M.2 2280
Media Speed	1900 megabytes_per_second
Model Number	AS40G256GTC
Built-In Media	customizable RGB lighting heatsink
Hard-Drive Size	256 GB
Mfr Part Number	AS40G256GTC
Number of Items	1
Special Feature	Portable
Installation Type	Internal Hard Drive
Compatible Devices	Desktop
Data Transfer Rate	3938 megabits_per_second
Enclosure Material	NAND flash memory
Additional Features	Portable
Hard Disk Interface	PCIE x 16
Warranty Description	5-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 available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-06-21. Price and availability subject to change.