Is VMware comparing like with like when comparing Intel and AMD based platforms? If people believe the AMD CPU is more powerful, is their a way to apply a correction factor for AMD platforms?
AMD Opteron is not more powerful. It is a different technology that provides better throughput under certain circumstances. In an Intel platform, all the processors make memory requests through a common physical interface. AMD Opteron has a separate physical interface for each processor. The bottleneck to memory has been removed, and the speed to the memory is faster as well. This is the big difference. It is also a 64-bit platform, but that alone does not offer an advantage over an Intel 64-bit platform. There are two things to consider. First, are you comparing a 32-bit to a 64-bit platform? Second, are you comparing Intel to AMD Opteron? The only way you see significant improvements in throughput is in a memory intensive application. Most applications are not total random memory access intensive, only about 2%. If a system is paging due to limitations on the file system cache, 64 bit may solve the problem by allowing a much larger file system cache. If a system is paging because eve
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