Guys I have a very important question.

I've been proposed to change my Asus Rampage Formula and Intel Q9450 for used Gigabyte GA-EP45-UD3P rev. 1.1 and new Q6600. My actual system clocks only 450MHz which is CPU 3.6GHz and DDR2-1200MHz. I'm unable to OC any higher. So I've been thinking lately if I switch to "new" hardware, will I gain any performance in games (I use my system for games mostly)? My other hardware are MSI R5870 Lightning (rendering), EVGA 8800GTS G92 (PhysX), GSKill F2-9600CL5D-4GBPI. I'll appreciate any suggestions of yours.