Advanced Micro Devices Inc (AMD)

[upc]

But its pretty clear that Intel has fairly good 64 bit performance from these benchmarks.

It is?

Perhaps you haven't kept up with the "evolution" of the results:

(which of course, compare ONE Nocona 3.6 to ONE Newcastle 3500+)

Lame: tie
Gzip (32bit??): tie
Pov-Ray: Nocona almost 40% slower
MySql: Nocona 4-11% slower
primegen: BOGUS, spends 75% of the time in putchar()
super_pi: BOGUS, no source code, unknown bitness, unknown optimizations.
TSCP: Noncona 25% slower
ubench: BOGUS? Buggy code noted by another review. Ancient codebase.
Encryption("John the Ripper"): completely BOGUS -- hand-tuned assembly for "Intel"-named cpus only.

So, where do you find *any* support for your claim?

upc