For Intel Xeon X5260 Processor(3.33GHz/6MB/1333MHZ )close to LGA775 Core 2 cpuworks on LGA 775 mainboard no need adapter - Price history & Review | AliExpress Seller - XL computer cpu Store | Alitools.io
Intel EU80573KJ0936M - 3.33Ghz 1333Mhz 6MB Cache LGA771 Intel Xeon X5260 Dual-Core CPU Processor - CPU Medics