Adrian Kingsley-Hughes from ZDNet Hardware 2.0 has done a series of benchmarks, not raw ones with exact numbers, but with ratings as results. He took Windows XP SP3, Vista SP1, 7 Beta 1 build 7000 (32 bit and 64 bit), 7 build 7048 (64 bit) and 7 build 7057 32 bit which is the most recent leaked build. He tested the builds on 2 separate systems...