hmmm, ur right. I looked it up, and he needs either a xeon quad core 5100, 5200, or 5400 series processor.
I looked around and I found these, but can anyone tell me if they're this much cheaper than the others cuz they're crap or are they decent at least?
Intel CPU Quad-Core Xeon E5405 2.0GHz FSB1333MHz L2-12MB Socket771 Active Retail -- BX80574E5405A
Intel Xeon Quad-Core L5420 2.5GHz 1333MHz 12MB LGA771 CPU, OEM - EU80574JJ060N, AT80574JJ060N $330
Intel Xeon E5410 Harpertown 2.33GHz 12MB L2 Cache LGA 771 80W Quad-Core Processor BX80574E5410A $300