Him - there is no correction to be made, because what you explained is not true. Yes components do expand when they get hot, but this does NOT effect performance in any measurable way. The only time it would effect performance is if it's so hot it's about to die.
Your CPU will not perform better at 10C compared to 60C no matter how much you think it will dude. Cooler temps benefit OC'ing and overall lifespan, they do not increase performance at all.
2.5GHz is 2.5GHz no matter what the temperature is. When it's running at that speed, like I said, even if it's 60C, a 10C 2.5GHz wouldn't 'let more traffic through' because there is no traffic to be let through it's the same clock speed unless of course that 60C is to the point of killing the processor in which it can't efficiently process.
The main point is, going from stock cooler to aftermarket and decreasing temps by even 20C isn't going to magically gain more performance simply by being cooler