If you are testing for stability, everything else is a joke next to Linpack. Linpack is a library by Intel and hence needs to be implemented by someone else in their app (OCCT, Intel Burn Test). Use OCCT since its much easier to use.
Use the "CPU: LinPack" test and choose 90% memory. Your CPU temps will be 20C higher than anything else (in the 80-90C range) unless you have a massive cooling solution (100+ CFM).
2 minutes of this will render your 3-day stable Prime 95 run unstable.
@Frozen
You're 1GHz short of a normal overclock for that CPU and chipset.
Automatic settings are very dangerous. They sometimes severely overvolt the CPU and NB even at stock speed and even more when using these instant OC settings so that its assured to be stable. Every single voltage in the BIOS should be on manual. An i7 can fry with even a little extra voltage on the memory controller.
Hence why I'm not exactly willing to go ahead and overclock it myself. I don't think the "automatic" mode changed the voltages at all. Most of the OC's I've read about are able to get to 3.3 without any voltage changes
Realtime, 8M, on the 8300:
[qimg]http://i700.photobucket.com/albums/ww8/LanceOfEden/PiShot.png[/qimg]
57s
you can set the priority in the program.
Took 43s for 8M on my dad's E8400 3.0GHz.