How to stress test with dual core

[borat]

Just poped my new opteron 165 into my socket 939 motherboard and made the step into the world of dual core. Must say I'm impressed, can now run my excel macro's (which take about 10 minutes to complete) AND still use the PC at the same time for other things.

However I'm looking to overclock this thing as high as I can, stock is 1.8 and I literally just booted last night when I got it in the PC at 2.5G straight off prime stable, only problem is prime is only making use of 50% of the CPU, ie 1 core. What do people use to stress test dual core?

[borat]

Forget that question, just found the answer:

http://sp2004.fre3.com/beta/beta2.htm

[spadnos]

You can also just run two copies of something like PiCalc. (or possibly Prime95)

(don't ask me for the correct version of PiCalc - I haven't been able to find the one my friend used on his dual dual-core systems)
- Steve

[borat]

Prime95 will only allow one instance of the program to be run at a time, opening another just kicks you into the first. Will try picalc also though.

Managed to get it priming on both cores at 2.8Ghz rock solid at 1.4V, needs 1.5V to be stable at 2.9 so I think I'll be leaving it at 2.8. Very happy, recommend these chips highly!