Cleeve,
Firstly, thanks very much for doing this rewrite (and sorry it took so long for me to get to it and read it).
I would like to echo the sentiments expressed elsewhere in this thread about memory timings. I didn't think that it really would matter much, but I did find quite a bit of information on the web about AMD architecture and the benefit of low latency ram. There does seem to be a sweet spot between the MHz of the ram and the latency settings, going to high in MHz at a sacrificate of tight timings will have an adverse effect as much as too low MHz with loose timings. There's a balance in there.
My point is that I think when comparing AMD vs. Intel, you _should_ take memory latencies and speed into account. You could actually buy lower speed, tighter timed memory and also put that elsewhere in the system. I don't think it's fair to say that in order to do a AMD vs. Intel, you need to keep the same components _on parts that matter to the arcitecture_. I stress that (not to be obnoxious) because there was some debate about using SSD drives, and I really doubt that amd platform would benefit over Intel on this part (but, full disclosure, I've not done a single google search on that question). Memory latencies, on the other hand, I've found a lot of references to this and Intel defintiely favors higher mhz looser bindings in their memory setup than vs. AMD (which appears to be oppostite).
It would be very interesting for you to put this to the test, but I imagine that's a lot of work, and you may not be so inclined. However, if that's the case, and we should rely on what others have reported on other sites, then you should treat the same mem sticks across amd and intel to be favoring one platform or the other. For this reason, that's why I recommend that you SHOULD be using hardware that favors the platform when doing a dollar-for-dollar comparison.
Thanks again for your great work, and I look forward to future articles.