works on LGA 775 mainboard no need adapter xeon E5420 Processor 2.5GHz/12M/1333Mhz close to LGA775 Core 2 Quad Q6600 cpu|core 2 quad|2 quadcore 2 quad q6600 - AliExpress
For Gigabyte GA-G41MT-S2PT Motherboard set comboSocket LGA 775 PC Motherboard Original (Wiht Intel E8400 CPU Processor+RAM DDR3 4GB 1333MHz memory+All new CPU Cooler) | Lazada Singapore
G31MX-K Foxconn Desktop Motherboard Intel Chipset Socket T LGA-775 1 x Processor Support 4GB