According to developer Drew Gallatin, the popular streaming service is powered by AMD Epyc-7502P servers with 32 cores and 256 GB DDR4-3200 RAM. Four 100GbE connections are provided by two Mellanox ConnectX-6 Dx switches. They are running FreeBSD. Because of the restricted amount of memory available, the developer has configured the systems to accommodate data rates of up to 400 Gbit/s.
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Additionally, they already have hardware prototypes capable of 800 Gbit/s network connections, although none of these have been tested. Check out his presentation, which can be
download here.