Unfortunately my cpu has stock cooler and it's a bit on the warm side,I haven't ever overclocked and finally I live in a pretty warm country.
How warm is warm?
Are you certain that the stock cooler is mounted properly? The only way to tell is if you can look at the back of the motherboard and see that all 4 pushpins are completely through and locked.
What temperatures do you get if you run prime95 long enough to reach maximum stable temperatures?
Look at cpu-z at that time to be certain that the cpu has not throttled back the multiplier to protect itself.
hhmmm well that does seems bit low i actually get a high school on 3d mark vantage with a gtx 275 ftw it got a 12500ish gpu score don't know exactly i'm not at my desktop atm
You might still be able to overclock, some. You might be able to drop the voltage very slighly then bump up the clocks, just a bit and get roughly the same temps