According to Valve’s official spec sheet, Steam Machine has a 6-core AMD Zen 4 CPU, an AMD RDNA 3 GPU with 28 CUs, 16GB of DDR5 and a separate 8GB of GDDR6 for graphics. Storage is a 512GB or 2TB NVMe SSD, and video goes out over HDMI 2.0 and DisplayPort 1.4. The whole thing is a cube of roughly 16cm per side and weighs 2.6kg. Below is the full table and what it means for connecting a TV, adding storage and where to put it. Status as of 12 November 2026.
Spec table
| Component | Steam Machine (per Valve) |
|---|---|
| CPU | semi-custom AMD Zen 4, 6 cores / 12 threads, up to 4.8GHz, 30W TDP |
| GPU | semi-custom AMD RDNA 3, 28 CUs, max sustained clock 2.45GHz, 110W TDP |
| Memory | 16GB DDR5 + 8GB GDDR6 VRAM |
| Storage | 512GB or 2TB NVMe SSD, microSD slot on the front |
| Video out | DisplayPort 1.4, HDMI 2.0 |
| USB | 2× USB-A 3.2 Gen 1 front, 2× USB-A 2.0 rear, 1× USB-C 3.2 Gen 2 rear |
| Network | Gigabit Ethernet, Wi-Fi 6E 2×2 |
| Bluetooth | 5.3 with a dedicated antenna |
| Steam Controller adapter | built in, 2.4GHz |
| Power | internal power supply, 110–240V |
| Light bar | 17 individually addressable RGB LEDs |
| Dimensions | height 152mm (148mm without feet), depth 162.4mm, width 156mm |
| Weight | 2.6kg |
| OS | SteamOS 3 (Arch Linux), KDE Plasma desktop |
The models differ only in storage; the 2TB versions also include two extra magnetic faceplates. Prices for all options are in our Steam Machine overview.
CPU and GPU
Both the CPU and GPU are semi-custom AMD chips, adapted for Valve. The Zen 4 CPU has 6 cores and 12 threads and boosts up to 4.8GHz. The RDNA 3 GPU has 28 compute units and a maximum sustained clock of 2.45GHz. Valve lists a TDP of 30W for the CPU and 110W for the GPU.
Valve says Steam Machine has over six times the horsepower of Steam Deck. In February 2026 Valve wrote that, in most titles on Steam, its testing shows 4K at 60 FPS with FSR. Some games, it added, need more upscaling, and a lower frame rate with VRR and an internal resolution of 1080p can be the better choice. The default game resolution is 1080p, and you change it in Settings > Display. How it holds up in games and what Verified means is covered in our guide to Verified games. The differences from Deck are in our Machine vs Deck.
Memory and storage (SSD, microSD, upgrades)
Steam Machine has 16GB of DDR5 system memory and a separate 8GB of GDDR6 graphics memory. Storage is an NVMe SSD with 512GB or 2TB.
Both models have a fast microSD slot on the front. UHS-I cards of class 3 and up are supported. UHS-II and UHS-III cards work too, but without the extra speed. You format a card in Settings > Storage. A card with games from Steam Deck can go straight in, and you can play the games on it.
According to Valve, the SSD (NVMe 2230 or 2280) and the memory (DDR5 SODIMM) are accessible and replaceable. Tom’s Hardware notes that the SSD is easy to swap, but you only reach the RAM after removing the large cooler. Valve does not recommend opening the device, and damage caused while doing so is not covered by the warranty.
Ports and connecting a TV or monitor
There are two video outputs:
- DisplayPort 1.4: up to 4K at 240Hz or 8K at 60Hz, HDR, FreeSync and daisy-chaining.
- HDMI 2.0: up to 4K at 120Hz, HDR, FreeSync and HDMI CEC.
You can connect more than one display, but Gaming Mode always uses just one. If HDMI is connected, it takes priority. To go from DisplayPort to HDMI you need an active adapter; passive ones do not work.
There are four USB-A ports and one USB-C. The two USB-A ports on the front are 3.2 Gen 1, the two on the back are USB 2.0. The USB-C 3.2 Gen 2 port on the back has its own bus. Gigabit Ethernet is on the back too.
Wireless and the built-in Steam Controller adapter
Steam Machine has Wi-Fi 6E 2×2 and Bluetooth 5.3 with a dedicated antenna. On top of that it has a built-in 2.4GHz wireless adapter for the new Steam Controller, so you do not need the Puck the controller uses with other devices. Controllers from other brands pair over Bluetooth. Step-by-step instructions are in our setup guide.
Size, weight and the light bar
Steam Machine is almost a perfect cube: 152mm tall (148mm without feet), 162.4mm deep and 156mm wide. It weighs 2.6kg and the power supply is built in. It accepts 110 to 240V.
Steam Machine has a light bar with 17 individually addressable RGB LEDs. It shows the system status, and you can set your own colours in Settings > Customization. Games cannot control it yet.
Where to put it (operating conditions)
Valve and Steam Support give this advice on placement:
- Stand it on its feet on a hard, flat surface. Not on a carpet.
- Do not put anything on top of it and do not shut it in a closed cabinet. Leave a few centimetres of space around it and at least one side open.
- A Wi-Fi router or shielded USB 3 drives right next to it can interfere with the wireless connection.
- You can run it at ambient temperatures up to 35°C and humidity up to 85% non-condensing, at altitudes up to 3,500m. Storage is fine from −20 to +60°C.
Steam Machine is only fully off once it is unplugged. Wipe dust off with a dry microfibre cloth. Do not use compressed air or a vacuum cleaner, as that can spin the fan and damage it.
Join our Discord to see where others have put their Steam Machine and what they connected to it: Discord GamersTogether.
FAQ
A semi-custom AMD Zen 4 CPU with 6 cores and 12 threads up to 4.8GHz, and an AMD RDNA 3 GPU with 28 CUs and a sustained clock of up to 2.45GHz.
16GB of DDR5 system memory plus a separate 8GB of GDDR6 for graphics.
Valve says the SSD and memory are accessible and replaceable. It does not recommend opening the device, though, and damage caused while doing so is not covered by the warranty. Without opening it, you can add storage with a microSD card.
HDMI 2.0, DisplayPort 1.4, 2× USB-A 3.2 Gen 1 on the front, 2× USB-A 2.0 on the back, USB-C 3.2 Gen 2 on the back, Gigabit Ethernet and a microSD slot.
It is a cube of roughly 16cm per side: 152mm tall, 162.4mm deep and 156mm wide. It weighs 2.6kg.
Information verified on 12 November 2026. We keep prices and the waitlist status up to date. More guides are in our Steam Machine section.