AI nerfed Valve’s Steam Machine by forcing single-channel memory
Valve confirms that all Steam Machines use single-channel DDR5 memory
Valve has launched its Steam Machine, and while it is an interesting piece of hardware, it is fated to have a much smaller impact than it should. The AI industry and rampant datacenter buildouts have driven up prices for many components, with DRAM and NAND hit hardest. This has made Valve’s Steam Machine an expensive device. Even worse, memory shortages have nerfed the product’s performance.
According to Digital Foundry, Valve engineers have confirmed that they initially planned to launch the Steam Machine with two 8GB DDR5 memory modules. Unfortunately, when it came time to secure memory for the device, it became impossible to source 8GB memory DIMMs. Simply put, higher-capacity modules are more profitable, and all production shifted there when the DRAM shortage started.
While Valve’s Steam Machine supports dual-channel memory, it uses only one memory channel in its default configuration. While Valve’s Yazan Aldehayyat reportedly stated that the performance of single-channel 16GB VS dual-channel 2x8GB is”pretty comparable”, it is undeniable that using single-channel memory leaves performance on the table.
(Steam Machine Motherboard – Image from Valve (via Digital Foundry))
Nerfed at launch – Thanks AI…
While Valve has confirmed that users can upgrade their Steam Machines with more memory, the system will lack the performance of dual-channel DDR5 memory out of the box. Valve has also confirmed that users can upgrade their devices with larger M.2 SSDs.
By upgrading a Steam Machine with dual-channel memory, users can benefit from increased memory bandwidth and more memory capacity. This will increase the performance of Valve’s mini gaming system. That said, having dual-channel memory will not boost system performance if your games are GPU-limited.
All Steam Machines produced to date come with 2 SODIMM slots but only one is populated with a 16GB stick and we currently have no plans to change that configuration. However, given the challenges with supply it may be possible that we change the configuration to 2 8 GB sticks.
– Valve
I asked Valve for clarification just now and here is the response. "All Steam Machines produced to date come with 2 SODIMM slots but only one is populated with a 16GB stick and we currently have no plans to change that configuration. However, given the challenges with supply it…
— Digital Foundry (@digitalfoundry) June 22, 2026
Valve has confirmed that all currently produced Steam Machines use single-channel DDR5 memory. These systems use a single 16GB DDR5 memory module. Valve currently has no intention to produce Steam Machines with an alternative hardware configuration. However, supply chain changes could force Valve to change how it builds its future Steam Machines.
You can join the discussion on Valve’s Steam Machine using single-channel DDR5 memory on the OC3D Forums.
