Steam Machine · Guides
Steam Machine Upgrades: RAM, Storage, and What You Cannot Change
Summary
The Steam Machine's SSD and system RAM can be replaced, but the 8GB of graphics memory cannot. Storage is the easier upgrade; RAM takes substantially more disassembly.
You can replace the M.2 SSD and system RAM. The 8GB of GDDR6 graphics memory, CPU, and GPU have no documented upgrade path. Storage is easier; the SO-DIMM slots require a deeper teardown.
We have not opened a retail Machine or tested module combinations. Check exact compatibility before buying parts.
The upgrade map
| Part | What the evidence shows | Practical difficulty |
|---|---|---|
| M.2 SSD | Stock 30mm drive; 80mm mounting point also present | Moderate |
| System RAM | Two DDR5 SO-DIMM slots; retail teardown found one 16GB module installed | High |
| microSD or USB storage | Supported external expansion with no internal teardown | Low |
| 8GB GDDR6 VRAM | Fixed graphics memory, not a user-replaceable module | Not upgradeable |
| CPU and GPU | Semi-custom board components, with no documented socketed upgrade path | Not upgradeable |
Valve confirms 16GB of DDR5 system RAM and 8GB of GDDR6 VRAM. ETA Prime's retail teardown found one 16GB DDR5-5600 SO-DIMM across two slots and booted a 64GB two-module kit. That is one successful test, not Valve's maximum specification.
Storage is the sensible first upgrade
The stock drive is M.2 2230, with another standoff for M.2 2280. The community iFixit guide covers both sizes, the T8 driver, shell removal, exposed front I/O, and SteamOS reinstallation.
Before opening the case:
- Remove the microSD card to avoid damaging it.
- Back up unique files.
- Prepare current SteamOS recovery media or verify the cloning plan.
- Confirm the replacement is a compatible 2230 or 2280 M.2 NVMe drive.
- Track every screw and standoff during disassembly.
Keep the original drive unchanged until the replacement boots, updates, and launches games.
For game capacity alone, compare the internal swap with lower-risk microSD and USB options in the storage guide.
RAM is possible, but access is the problem
Notebookcheck's teardown report identifies one 16GB DDR5-5600 CL47 module and an empty SO-DIMM slot. Reaching them requires removing the shell and several internal assemblies.
Matching headline specifications is not enough; firmware training, rank layout, timings, voltage, and mixed modules can matter. Prefer a tested kit, or match the existing module's exact part number and buy with a useful return policy. The demonstrated 2x32GB kit proves only that one 64GB configuration booted.
What dual-channel memory can change
The factory module runs single-channel. A compatible second module adds bandwidth, but the GPU still uses separate GDDR6 memory. Summaries of GamersNexus testing from VideoCardz and TechSpot show modest average gains in GPU-focused games and larger changes in some CPU-limited games and compression work.
Choose RAM for a measured need:
- Add capacity when your workload approaches 16GB.
- Consider dual channel for CPU-limited work.
- Do not buy 64GB to address VRAM pressure. System RAM does not become dedicated VRAM.
The fixed limit is graphics memory
The GPU's 8GB of GDDR6 is fixed. RAM and SSD upgrades cannot increase it. Lower textures or output resolution may help games near that limit; the specs analysis covers the tradeoff.
There is also no documented drop-in CPU, GPU, or cooling upgrade. Serviceable parts do not make this a desktop-standard upgrade platform.
Opening it carries real risk
Valve does not recommend opening or modifying the device and says resulting damage is not covered. Check your regional warranty terms.
An SSD swap exposes the front I/O; RAM access adds connectors, antennas, and boards. Use a qualified repair shop if you are not comfortable with compact electronics.
Practical order
Try external storage first. Replace the SSD when one larger internal library justifies recovery work. Add RAM for measured capacity or bandwidth needs, not as a general performance fix. Every option leaves the 8GB VRAM limit unchanged.