This are some hard Numbers Rafaello and even harder images
For me the 64 bit Build was about 13% slower on a quick 100 spp test, maybe the 32bit build is more evil here?!
Afaik Ono did a bunch of SSE related optimizations for the 2.xx build... maybe something went terribly wrong there! Since Ono is on a 64bit Vista too, he maybe don't recognized this...
More Benchmarks would be nice here guys, keep them coming!