To answer Scoble's question, the recent TPC-C benchmarks that MS is proclaiming were run on a 64-way, 64-bit machine with 1/2 TB of RAM. I'm pretty sure I heard Gordon Magnione say this in his keynote at PASS. I know for sure that he said one of their next steps is to take it up to a full Terrabyte of RAM.
And then this morning I had breakfast with a guy from HP who, when I asked what he did started to tell me about the HP team at Microsoft performance tuning a 64-way 64-bit machine for the TPC benchmarks. I double-verified with him that he did indeed use that phrase. So Scoble, if that guy from Chevron is still reading, tell him that the news looks good.