From WikiChip
Talk:amd/ryzen threadripper/3970x
< Talk:amd‎ | ryzen threadripper

Hello,

I use this CPU at work and would like to find out (without benchmark, I have already benchmarking results) what the exact memory speed of each cache is. The way I understand it: Each of the 32 cores has their own L1 and L2 cache of size 64KiloBytes and 512KiloBytes; whereas groups of 4 cores share one L3 cache of 16MegaBytes. Experimentally, I found different speeds for different memory-bound operations, like axpy, copy, bit-shift. Thus, I would really love to know what the exact speeds as per factory are. How can I find their exact values?