As part of the GDC 2019 conference, Google held its own event, where it introduced the new game streaming service Stadia. We have already talked about the service itself, and now we would like to tell you more about what the new Google system works on, because it uses various solutions made specifically for this system.
The key element of the Google system is, of course, GPUs. AMD's custom solutions are used here, which are based on the Vega graphics architecture. Each GPU is reported to have 56 Compute Units (CUs) and is also equipped with HBM2 memory.
One would think that Google is using graphics cards close to the consumer Radeon RX Vega 56. However, in fact, AMD's custom solutions have several important differences. Firstly, a faster memory with a bandwidth of 484 GB / s is used here. The consumer Radeon RX Vega 64 has the same memory, while the younger Radeon RX Vega 56 uses less fast memory (410 GB / s). Immediately, we note that the total amount of memory in the system is 16 GB, of which half, apparently, is HBM2 video memory, and the other is DDR4 RAM.
But more importantly, Google claims 10,7 teraflops of performance for its GPUs, apparently in single precision (FP32) calculations. The consumer Radeon RX Vega 56 is only able to provide about 8,3 teraflops. It would be logical to assume that the solutions for Google use GPUs with a higher frequency. And this, in turn, suggests that AMD created a graphics processor for Stadia based on the updated Vega II architecture, and it is being manufactured using the 7nm process technology.
As for the processor, Google does not specify which manufacturer's solution it used in the Stadia service systems. It is only said that this is a custom x86-compatible processor with a frequency of 2,7 GHz, with 9,5 MB of cache in the second and third levels, as well as with multithreading (Hyperthreading) and support for AVX2 instructions. The amount of cache and the name of the multithreading as "HyperThreading" indicate that this is an Intel chip. However, support for only AVX2 without the more modern AVX512 indirectly refers us to AMD, which, moreover, is better known for its custom chips. It is very likely that AMD's new 7nm Zen 7-based processors are also used along with the 2nm Vega GPU.
These are the systems Google will provide virtually to users of its new gaming service, Stadia. Quite a lot of computing power, I must say, but they are necessary to ensure high performance in games. Moreover, Google plans to ensure the execution of games in resolutions up to 4K at a frequency of 60 FPS.
Source: 3dnews.ru