Wednesday March 20, 2019

Digital Foundry Analyzes Google's Stadia Platform

Following Google's "Stadia" game streaming service announcement yesterday, Digital Foundry decided to take a closer look at the hardware behind the platform. Google says they use a "Custom 2.7GHz hyper-threaded x86 CPU with AVX2 SIMD and 9.5MB L2+L3 cache," and while they didn't mention the vendor, DF notes that they haven't seen such a configuration in any of AMD's currently shipping server CPUs, and that it should significantly outpace anything found in a modern console. Meanwhile, the GPU largely resembles a Vega 56 card with 16GB of HBM2, and the games are reportedly loaded from an SSD. Through their own testing, DF came away impressed with the platform's consistent frame pacing, and in some cases, total latency is on par with locally-run games on a console or PC.

Google has also demonstrated scalability on the graphics side, with a demonstration of three of the AMD GPUs running in concert. Its stated aim is to remove as many of the limiting factors impacting game-makers as possible, and with that in mind, the option is there for developers to scale projects across multiple cloud units: "The way that we describe what we are is a new generation because it's purpose-built for the 21st century," says Google's Phil Harrison. "It does not have any of the hallmarks of a legacy system. It is not a discrete device in the cloud. It is an elastic compute in the cloud and that allows developers to use an unprecedented amount of compute in support of their games, both on CPU and GPU, but also particularly around multiplayer."