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utternerd | 7 years ago

64 core EPYC chips based on Zen 2 is what really blows my mind.

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bitL|7 years ago

Threadripper 3 with 64 cores is going to be mindblowing! Not that long ago since Parallella board advertised 64 slow cores and soon we can get all x86/x64 high-end cores like that!

uep|7 years ago

It is pretty crazy. I felt the same way. Individual x64 cores tend to be so much more powerful than other architectures, and now single chips will effectively have 128 logical cores.

For my purposes (large builds and rendering), I think RAM prices are holding back AMD here. To feed that many cores, you want really big RAM sticks. The CPUs have become a comparatively small cost compared to the RAM these days.

snuxoll|7 years ago

The most important bit WRT to TR3 is going to be the central I/O chiplet instead of dividing memory controllers between individual Zeppelin dies. No more NUMA headaches to deal with on their workstation/enthusiast CPU's, I'm glad that AMD saw that such an approach wasn't going to work long-term (at least not for the time being when basically anything outside large database systems and hypervisors lack even basic NUMA-awareness).

gameswithgo|7 years ago

how often can 64 cores be effectively utilized without bumping up on memory throughput as a limiter?

This is pretty challenging at 32 cores! I know these chips ship with big l3 cache but l3 cache isn't so fast either.