kumori wrote:It's very possible that your i3 is being down clocked because of high temps. The TJmax (max temp) on i3s is about 95C. If the temp gets this high then the chip will throttle itself to protect against thermal damage. In your case, it seems likely that this is what's happening.
Do you overclock? If not there is no reason that your CPU should be getting this high, but an aftermarket cooler will likely solve your problem.