[The Exiled]

AMD's Zen 3 EPYC Milan processors are 10-20% faster than Zen 2 EPYC

With Zen 3, HardwareLuxx has reported that Zen 3 delivers an IPC boost of 15% in integer workloads and that AMD expects Zen 3 Milan processors to offer users a 20% performance boost when compared to Zen 2 when using 32-core EPYC models. With 64-core EPYC models, AMD expects Zen 3 to have smaller gains of 10-15%, as increased core counts will hamper AMD's ability to deliver higher clock rates with Zen 3. AMD's Zen 3 EPYC dies will feature eight cores with a unified L3 cache. This unified cache will be 32MB in size, replacing the two 16MB caches on AMD's Zen 2 EPYC/Ryzen dies. Instead of having two CCX's with four cores and 16MB of L3 cache, Zen 3 EPYC dies will feature a single 8-core CCX with 32MB of L3 cache. This change eliminates inter-CCX latencies for AMD's Zen 3 dies, which has the potential to increase Zen 3's performance in latency-sensitive workloads significantly. Beyond that, there will be fewer instances where data needs to be stored on both L3 caches, effectively increasing AMD's usable L3 cache size. With Zen 3, AMD is reportedly able to increase the clock speeds of processors with fewer cores/threads, which means that the benefits of Zen 3 will be their strongest on Ryzen and lower core count EPYC processors.

Izvor: OC3D