Steam Deck SSD Upgrade Guide 2026
The Steam Deck’s internal SSD is replaceable, and upgrading it is one of the most impactful improvements you can make to the device. Depending on which model you own, you might have 64GB, 256GB, 512GB, or 1TB from the factory. Modern games can push 100GB each, so running out of space is a real problem.
Here’s how to upgrade your Steam Deck’s SSD in 2026, and which drives to buy.
What Size SSD Does Your Steam Deck Use?
The Steam Deck uses an M.2 2230 form factor SSD (30mm long). Standard M.2 2280 drives (80mm) don’t fit. Make sure any SSD you buy specifies M.2 2230. PCIe Gen 3 x4 (NVMe) is the right interface — PCIe Gen 4 drives work too but at Gen 3 speeds.
Best SSDs for Steam Deck
Western Digital SN740 — Best Overall
The WD SN740 is the top recommended SSD for Steam Deck upgrades in 2026. Available in 512GB, 1TB, and 2TB. Fast sequential reads (up to 5150MB/s read — though the Deck will use it at PCIe Gen 3 speeds), reliable, and widely available. The 1TB variant is the most popular choice.
Sabrent Rocket 2230 — Best Budget Option
The Sabrent Rocket is specifically designed for M.2 2230 form factor devices. Performance is slightly behind the SN740 but the price is lower, especially at 512GB. A good pick if the WD is out of stock or significantly more expensive.
👉 Sabrent Rocket 2230 on Amazon
SK Hynix Gold P31 — Best for Heat and Battery
The SK Hynix P31 runs cooler than most NVMe alternatives, which matters in the Steam Deck’s compact thermal environment. Lower heat output also means slightly better battery life. Slightly slower peak speeds than the SN740, but the thermal efficiency is a real-world advantage in a handheld. Available in 2230 format with an adapter or purpose-made 2230 version.
How to Upgrade the Steam Deck SSD (Overview)
The upgrade requires a Philips #1 screwdriver and a guitar pick or plastic pry tool. The process takes 20–30 minutes:
- Power off the Steam Deck and hold the power button + volume down to enter boot menu
- Remove the back plate (8 screws) and carefully lift it off
- Remove the SSD shield screw and lift the shield
- Unscrew the M.2 screw holding the SSD in place
- Slide the old SSD out at a 30° angle
- Insert the new SSD and secure it
- Reassemble the device
- Boot from a USB drive to re-install SteamOS (Valve provides an official recovery image)
Valve’s official iFixit guide covers this step-by-step: iFixit Steam Deck guides
What Capacity Should You Get?
- 512GB: Comfortable for most players — room for 10–15 large modern games
- 1TB: Best value — recommended for anyone with a large Steam library
- 2TB: The maximum currently available in 2230 format. Worth it if you never want to manage storage again
MicroSD vs SSD Upgrade
A microSD card is cheaper and easier — just insert and use. But SSD speeds are 10–50x faster than microSD, which means noticeably faster game loading and OS responsiveness. For games you play regularly, SSD storage makes a difference. Many owners use an upgraded internal SSD for active games and a microSD card for storage of games they don’t play often.
Bottom Line
The WD SN740 1TB is the best SSD upgrade for the Steam Deck in 2026. The upgrade is straightforward, Valve officially supports it, and doubling or quadrupling your storage transforms how you use the device. If you’re running a 64GB or 256GB model, upgrading to 1TB is the single best modification you can make.
Also read: Original Steam Deck SSD Upgrade Guide