Best microSD Cards for Steam Deck and ROG Ally.
Running out of storage on your Steam Deck or ROG Ally can be frustrating, especially when modern PC games require dozens or even hundreds of gigabytes. Fortunately, a microSD card offers a simple way to expand your library without replacing your handheld’s internal SSD.
But which card should you buy? The best option depends on your budget, preferred storage capacity, and handheld model. Here are some of the best microSD cards to consider for your Steam Deck or ROG Ally.
Best microSD Cards for Steam Deck and ROG Ally
1. Samsung PRO Plus – Best Overall
The Samsung PRO Plus is a strong all-round choice for gamers who want a reliable card for storing and playing games. It offers capacities ranging from smaller options to 1TB, depending on the version available.
Look for a model rated A2, U3, and V30. These ratings indicate app-performance capabilities and sustained write performance, making the card suitable for game storage and large downloads.
Best for: Gamers who want a dependable balance of capacity and performance.
2. SanDisk Extreme – Best for Large Game Libraries
The SanDisk Extreme is another excellent option, particularly if you want plenty of space for large games. It is available in several capacities, including 512GB and 1TB, with availability varying by market.
Its A2, U3, and V30 ratings make it a suitable choice for handheld gaming. However, advertised maximum speeds depend on the device and card-reader standard.
Best for: Players who keep many large games installed.
3. Lexar PLAY – Best Value Option
The Lexar PLAY is worth considering if you want additional storage without paying for a premium professional-grade card.
Look for a UHS-I version with A2 and U3 ratings. It works well as a game-storage option for the Steam Deck and can also be used in compatible ROG Ally readers.
Best for: Budget-conscious gamers who want extra storage.
4. Samsung EVO Select – Best for Everyday Gaming
The Samsung EVO Select is a practical alternative for players who do not need the highest advertised speeds. Depending on the version, it comes in capacities suitable for keeping a selection of games installed.
Check the exact model’s speed-class markings before buying. Not every card in a product family has identical specifications.
Best for: Casual players who want affordable, additional storage.
Which microSD Card Should You Choose?
| microSD card | Best use | Recommended capacity |
|---|---|---|
| Samsung PRO Plus | Overall performance | 512GB–1TB |
| SanDisk Extreme | Large game libraries | 1TB |
| Lexar PLAY | Value for money | 512GB |
| Samsung EVO Select | Everyday gaming | 512GB |
These are general recommendations, not benchmark rankings. Compare the specifications and prices of the exact models available before purchasing.
What to Check Before Buying
1. Storage capacity: A 256GB card suits a smaller collection, while 512GB offers a useful middle ground. Choose 1TB if you regularly play large modern games.
2. Speed ratings: For the Steam Deck, a quality UHS-I card rated U3 or better meets Valve’s stated requirements. The original ROG Ally has a UHS-II-compatible reader, so a suitable UHS-II card may offer higher transfer speeds. However, the benefit depends on the card and workload.
3. Authenticity: Buy from reputable retailers. Counterfeit cards may advertise capacities or speeds they cannot deliver.
4. Compatibility: Ordinary UHS-I cards work in both handhelds. You do not need to buy the most expensive card just because its packaging advertises an impressive maximum speed.
Remember that microSD performance is generally slower than internal SSD storage. Some games may load more slowly from a card, so keep your most demanding or frequently played titles on the internal drive when possible.
FAQs
What is the best microSD card for Steam Deck?
The Samsung PRO Plus and SanDisk Extreme are strong options. Choose a genuine UHS-I card with suitable speed ratings and enough capacity for your library.
Can I use the same microSD card on Steam Deck and ROG Ally?
The card may be physically compatible with both devices, but their operating systems handle storage differently. You may need to reformat the card or reinstall games when switching between SteamOS and Windows. Back up important files first.
Is a 1TB microSD card worth it for gaming?
Yes, if you regularly install large games or prefer keeping a large collection ready to play. A 512GB card may be better value if you only play a few games at a time.
Will a faster microSD card improve FPS?
No. A faster card does not directly increase a game’s frame rate. It may improve file transfers and loading in some situations, but FPS mainly depends on the device’s hardware and game settings.
Is microSD better than upgrading the internal SSD?
A microSD card is easier to install and offers convenient extra storage. An internal SSD generally delivers better performance, but upgrading it involves more work and requires checking the device’s compatibility.
Final Verdict
For most Steam Deck owners, the Samsung PRO Plus or SanDisk Extreme is a sensible starting point. The Lexar PLAY and Samsung EVO Select are alternatives worth comparing when price matters more than headline speeds.
Choose 512GB for a balanced upgrade or 1TB for a larger game collection. Above all, prioritize a genuine card from a reputable seller rather than paying extra for speed ratings your handheld cannot fully use.
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