Just wanted to conclude my portion of this thread by reporting that I've assembled my Wolfdale (Xeon E3110) system: the chip seems genuine, and it POSTed on the first attempt. Chip is running fine so far at 'default' 3.06 GHz (my Abit IP35-E defaulted to 340 MHz FSB). Ran Memtest86+ and installed Vista Ultimate x64. Will run Prime tomorrow.
Suffice to say I'm very pleased with my moogr.com purchase.