hello,

I have an aging XPS 410 which i have recently upgraded with an ATI 6870 and a bigger PSU rated at 600 watts.

I want to also upgrade the processor but found out that socket 775 on this machine is limited to CPU rated at 1066.

Would a E7600 series work on this?  or am I limited to a Q6600 or E6800?my current cpu is the 6420, would I see a difference?

Thanks much for helping me see what the limits are.