Richard Leadbetter at Digital Foundry has put together his thoughts on the Steam Deck‘s performance, and compares it to the Xbox Series S, the lower performance version of the new generation of Xbox consoles:
But really, the most interesting elements of Steam Deck are the semi-custom AMD processor and the background operating system – and we’ll start with the first. Valve, via IGN, describes the chip as being next-gen in nature using the latest architectures – which is true, but only if we consider the consoles as the defining factor of what a generation actually is. You can effectively consider Steam Deck’s chip as being most similar in nature to Xbox Series S, with significant reductions in all dimensions. The eight-core, 16-thread AMD Zen 2 chip is cut down by half, while the fixed 3.6GHz clock adjusts to a variable 2.4GHz to 3.5GHz. Series S’s 20 RDNA 2 compute units drop down to just eight and again, a fixed clock on the Microsoft machine (1565MHz) shifts to a variable 1.0GHz to 1.6GHz on Steam Deck, meaning a range of 1TF to 1.6TF of GPU compute against the locked 4TF on Series S. Bearing in mind that we’ve measured Series S as drawing up to 82.5W of power, we need to keep expectations in check about the performance of Steam Deck.