It depends on the BW and size of this buffer...
I think SW like AIDA64 could make a distinction of "short" (fitting in the WCC) and "long" (not fitting in the WCC) writes here. (I've noticed the authors about it.)And the l1 write is correct because you expect it to be in the facinity of the l2cache.
Isn't it like to the L3, instead? Memory BW is roughly ~15 GB/s.These results seem more like a read/write through up to the memory. So either a hardware or an Aida64 software issue.
Anyway, the authors don't think it's AIDA64's fault. It could be a HW problem, but possibly they din't have had the latest AGESA when they've done tests on actual HW.
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