Valve has outlined more details of its upcoming handheld gaming PC Steam Deck, revealing hardware features players can expect to benefit from.
The details came as part of a Steamworks Virtual Conference, a series of six streamed videos that, while targeted at developers creating games for the Steam Deck, was free for anyone to watch.
One of the most interesting – and nerdy – revelations is the name of the Steam Deck’s system on chip or SOC. Called Aerith, likely after the Final Fantasy VII character, Valve hardware engineer Yazan Aldehayyat says it “has four Zen2 cores capable of eight threads up to 3.5 gigahertz and our GPU is RDNA2-based with 8CUs [Compute Units] running at 1.6 gigahertz.”
Saying that the system architecture should be “very familiar” to developers, Aldehayyat adds that “most games on Steam will not only be compatible with these architectures but a lot of them will also be specifically optimised for it right out of the box.”
The Accelerated Processing Unit has been custom-designed in partnership with AMD, and Aldehayyat says that “the level of performance, per watt, we were able to achieve with this processor would simply not have been possible using any off-the-shelf processor that exists today.”
The handheld’s memory was also touched on, with the Steam Deck opting for LPDDR 5 RAM – Low Power Double Data Rate, generation 5, or LP5 for short. Saying that “Steam Deck is going to be one of the first devices to utilise LP5”, Aldehayyat explains that the APU “runs a 128-bit wide memory bus at 5.5GHz [which] combines to a total of 88 gigabytes per second worth bandwidth.” This, Aldehayyat says, outperforms “dedicated desktop-grade GPUs” when measured on a per-teraFLOP basis.
In total, the system will have 16GB of unified memory, between the CPU and the GPU. This was a decision made with a degree of future-proofing in mind, with Aldehayyat saying “although most games on Steam today are more than happy with 8GB or even 12GB, we think that that might change in the future. We really wanted to make sure that Steam Deck is not only compatible with games that exist today, but could also run games that haven’t even come out yet.”
