Ive been using this micro SD cardits perfect for expanding Steam Deck storage with flawless performance.
Maximizing storage for your Steam Deck or ROG Ally is, frankly, essential.
Enter one of the year’s standout deals for Steam Deck owners.

At this price, it’s hard not to jump on the opportunity.
TeamGroup 1TB A2 Pro Plus microSDXC
$59.99.
Fast transfer speeds for quick loading time with up to 160MB/s read.

This even betters the price of a recent, andexcellent Prime Day deal.
For the UK, your best bet is thisWD_BLACK SN770M 2TB for 129.99, down from 183.99.
Corsair MP600 CORE Mini 2TB SSD
$129.99.

Up to 5,000MB/sec Sequential Read High-Density QLC NAND.
Is There a Performance Difference Between Installing Games on a MicroSD Card and the Steam Decks SSD?
These delays are nearly imperceptible when using an SSD.
That said, these examples are quite rare.
A notable exception isStarfield, which demands an SSD even on high-end desktops.
Since it doesnt perform well on the Steam Decks hardware regardless, storage speed is less of an issue.
The majority of your game library should run perfectly fine from a microSD card.