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> 4 x 32 GB RAM Because of their four dual-channel memory controllers, EPYC CPUs support eight-channel RAM. So, for optimum performance, it would need twice th
by TazeTSchnitzel 9y ago
> 4 x 32 GB RAM
Because of their four dual-channel memory controllers, EPYC CPUs support eight-channel RAM. So, for optimum performance, it would need twice that number of modules, right? I don't know the performance differential.
- namibj 9y agoNo, they have 4 memory channels per Socket, and can use up to 2 DIMMs per channel. So provided only one DIMM is user per channel, this can fully utilize the meory bandwidth of a single socket. (It also depends on the memory module having enough ranks to provide enough internal parallelism, but the effect of that only shows in small memory accesses).
- my123 9y agoIt's actually 8 memory channels per socket (4 times dual-channel)
- TazeTSchnitzel 9y agoAre you thinking of Threadripper? EPYC has twice as many dies.