AMD’s Upcoming Zen 4 Based Genoa CPUs Confirmed to Have 1 MB L2 Cache per Core

As unreliable as Geekbench can be as a comparative benchmark, it’s also an excellent source for upcoming hardware leaks and in this case more details about AMD’s upcoming Zen 4 based Genoa server and workstation processors has leaked. Someone with access to a 32-core engineering sample thought it was a good idea to run geekbench on it and upload the results. As the engineering sample CPU is locked at 1.2 GHz, the actual benchmark numbers aren’t particularly interesting, but the one interesting titbit we get is that AMD has increased the L2 cache to 1 MB per core, or twice as much as its predecessor.

What seems to be missing from this engineering sample is any kind of 3D V-Cache, as it only has a total of 128 MB L3 cache. Despite the gimped clock speed, the Genoa CPU is close to an EPYC 7513 in the single core tests and that CPU has a 2.6 GHz base clock and a 3.65 GHz boost clock, both system running Ubuntu 20.04 LTS. It manages to beat it in a couple of the sub-tests, such as Navigation, SQLite, HTML5, gaussian blur and face detection and it’s within a few points in things like speech recognition and rigid body physics. This is quite impressive considering the Genoa engineering sample is operating at less than half the clock speed, or possibly even at a third of the clock speed of the EPYC 7513. AMD is said to be launching its Zen 4 based Genoa CPUs later this year and models with up to 96 core and 192 threads, with 12-channel DDR5 memory and PCIe 5.0 support are expected.