[Beowulf] General thoughts on Xeon 56xx versus E5 series?
hahn at mcmaster.ca
Sun Sep 16 08:41:20 PDT 2012
> The memory controller is on die, so the bandwidth that the CPU itself
> independant from the number of channels, is dependant upon the CPU
this was true a number of years ago. now both intel and amd chips
have multiple clock domains on chip. after all, a core going "turbo"
doesn't somehow overclock the memory interface.
> Higher frequency means more bandwidth simply with the given memory
> channels available.
higher frequency memory controller * channels * width = bandwidth, yes.
that's just definitional and everyone already knows it.
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