INTEL XEON X5492 3.4GHz/12M/1600Mhz/CPU equal to LGA775 Core 2 Quad Q9650 Q9550 CPU ,works on LGA775 mainboard (no need adapter) - AliExpress
File:Intel Xeon E5450 (with 775 mod).png - Wikipedia
Amazon.com: E5450 E5450 Intel Xeon SLANQ Or SLBBM Quad-Core 3.0GHz 12MB 1333MHz Socket 775 Works On LGA 775 Mainboard No Need Adapter : Everything Else