The so-called laptop coolers really don't do anything to cool the CPU or GPU. I've learned that fact w/ my laptop. Would have thought that it would . .
I'm using this freeware and it really works: keeps the CPU around
45C with or without the laptop cooler!
You can customize it for your tastes including fan speeds and cutin points.
http://www.diefer.de/i8kfan/index.html