What is a good CPU load tester for a quad-core?

Hey everybody, I just want to know if there is a quick and simple CPU load testing program that can bring a CPU up to max temperatures.  I installed some new cooling hardware and I'm just looking to test it out.

I have an AMD FX-4350 CPU, and I have the overclocks turned off right now so it's running at 4.2 GHz.

Thanks everybody, and all I really need is a link to the program.  I have speedfan turned on to see the temps.

Aida64 (pretty popular)

Prime95 (although getting a bit outdated)

Intel Burn In Test (not recommended for extended period of time)

Thanks, I'll give Aida64 a try.