E7200 overclocked @ 3.04 GHz... ... ... ...need reviews

Okay my E5200 is overclocked to 4.14GHz and Im still going on a P45 Motherboard, your system is OK if it wasn't for that G31 Motherboard its a bad overclocker and with a P45 based board like the Asus P5Q series you should get ALOT more from that CPU, also check the memory timing divider

Are you on stock cooling? I just threw a e7300 into a p5q-pro and am at 3.9Ghz @ 1.375V, Rock solid stable. (Zerotherm Nirvana cooler idles @ 30C, Load High 40's).
I think you can squeeze alot more out of that processor, I would, if you haven't already, invest in a aftermarket cooling solution of some sorts and push it farther, these E7... series are great OCing fun. I bet you can get near 4ghz. I had it at 4, booted into windows fine but minimal gains for higher voltage than I am comfortable with. Good luck!

The way a it works is you up the speed until it is not stable. Then you up Vcore to a point until it is stable (within limits). These 45nm processors are rated up to 1.362 Vcore, unless you have adequate cooling in which case you get a bit more leeway. You are well within the safe zone @ 1.175. 3Ghz is an extremely mild overclock and you actually probably don't need to up voltage at that level. I think most are able to just up FSB to 333 to get a 3.16 OC (like the 8400). If I were you I would try that and then see if you need voltage increase.

Just an update, have my E7300 @ 3.9 Ghz at 1.36V right now, idling at 25C Load is in the low 30's, stable as can be (24/7). Push that E7200 a little harder! you will not regret it!