Re: Q6600 V Q9400
For the record I have a q6600:
There is really no reason for you to upgrade.
After you read the articles trotter posted you should be able to OC. Even though you only have 3 fans on your case, you should be able to get to 2.66 (probably on stock voltages). Just monitor your temps, but first see how far you can get on stock voltages.
CPU:Q6600 G0 @ 3.7Ghz (410x9 w/1.475v)
Motherboard:Asus P5E X38
Memory:2x2GB OCZ Reapers DDR2 1066
Graphics Card:GTX460 768MB @ 880/1760/2000
Hard Drive:2x WD Black 1TB
Power Supply:Xion 800W
CPU cooling: H50
GPU cooling: Best Stock Cooling I Have Ever Had