The AMD Milan-X EPYC 7773X 3D V-Cache server CPU features 64 cores and 128 threads and is designed for high-performance computing. It features an 804 MB cache onboard.

Kenaide, a Chinese content creator, was able to get and test two qualifying samples of these CPUs on a SuperMicro dual-socket motherboard because these processors are not currently available through retail channels. Because this is an engineering sample, CPU-Z reports that it is operating at a base and boost frequency that is 100 MHz slower than the official CPUs' base and boost frequencies of 2.2 GHz and 3.5 GHz, respectively. This indicates that it is not as fast as the genuine article. Cinebench R23 and 3DMark were both run with a total of 1608 MB of cache. 512 MB of V-Cache is available on each processor, which has 32 MB of L2 and 256 MB of L3 cache.

In addition, the EPYC Milan/Rome ES/QS Overclocking tool was used to "overclock" the CPUs to 4.8 GHz, which was the maximum speed possible. This tool boosted the power limit of the CPUs from 280 W to 1500 W and increased the voltage to 1.55 V. There is no information available on how quickly the processor actually operated or how well it performed in overclocked tests at this 4.8 GHz clock speed.