⚙️ Handheld Hardware AuditSoldered / Fixed
Best RAM for Steam Deck (LCD & OLED) & Performance Optimization Matrix
The Steam Deck uses 16GB of highly efficient, low-power LPDDR5 memory running at 5500 MT/s (LCD runs at 5500, OLED runs at 6400 MT/s). The memory is soldered directly onto the PCB surrounding the APU, meaning user physical upgrades are impossible. However, the software-level memory paging and BIOS VRAM allocations can be heavily optimized.
Stock Memory16GB
Maximum Limit16GB
Memory TypeLPDDR5
Upgrade DifficultySoldered
Shared Memory Partition
12GB OS
4GB VRAM
Windows / System GPU / VRAM
1GB (Min)4GB (Standard)6GB (Sweet Spot)8GB (Max)
Valve Handheld16GB unified
UMA Frame Buffer Advice
SteamOS utilizes unified memory where the APU dynamically allocates up to 8GB as VRAM. You can adjust the baseline UMA Frame Buffer in the BIOS from 1GB to 4GB to stabilize heavy titles. Use CryoUtilities to expand the swapfile to 16GB and enable huge pages for stutter-free gameplay on AAA maps.
Frequently Asked Questions (FAQ)
Can I physically upgrade the RAM on my Steam Deck?▼
No. The LPDDR5 RAM chips are soldered directly onto the motherboard. Upgrading requires advanced desoldering and BGA reflowing, which voids the warranty and carries an extremely high risk of bricking the console.
What is the best BIOS setting for Steam Deck memory?▼
Setting the UMA Frame Buffer Size to 4GB in the BIOS is widely recommended for AAA titles. This reserves 4GB strictly for VRAM upfront, reducing memory relocation stutters when textures load.