What about Q9650?E5800 is faster single core @ 3.2GHz vs 2.66GHz for the quad unless overclocked.
What about Q9650?
My friend is building new pc and he has these two processors lying around, both are rarely used.3GHz is a step up on a quad but why would you care if you only want 1 core speed?
It's Zebronics G41-D3: https://zebronics.com/products/motherboards/zeb-g41-d3-socket-775Need to check your board for compatibility, some of the ones running Core2 duo 5000 series won't run a quad Q9650, only a Q6600.