rezwan22 :
Im playing crysis warhead with the current settings resolution at 1024x768 with all settings at high and with 2x AA on
If you play games at that resolution then bottleneck is going to be your CPU.
rezwan22 :
so how abt i upgrade to one more stick of 2GB ram would to be a worth it ? and i will definitely overclock the processor but i have never done it before and need help
Hopefully your board can take two more sticks of 1GB so you can continue to run in dual channel. Are you running a 64bit or 32bit OS?
2x 2GB Corsair $65 - $30 = $35
http://www.newegg.com/Product/Product.aspx?Item=N82E16820145184 This is a decent deal after mail-in rebate.
Otherwise any pair of 1GB sticks will be $25.
If you need to know more about overclocking your CPU, your best to do a google search on your socket type. Its pretty easy to do once you become comfortable with it, but it can be time consuming and fustrating (constant reboots, lots of benchmarks, system freezes, some benchmarks run over night to determine longterm stability).
You should consider getting an after market cooler for your CPU if you do want to go through with OC'ing. Nothing too fancy something like the XIGMATEK HDT-S1283 ($37), as long as you have roon in your case to fit it. Your CPU is going to be your bottleneck in pretty much every game, but at the resolution your playing games that are out now will for the most stay above 30FPS durning the action sequences. However, if your not happy with your OC'ing on your current chip after everything is said and done. I'd recommend the Q6600, while it will under perform vs the E8400 in most of today's games it will probably have more life in future games.