I set the timings to 7-7-7-24 and the voltage to 1.64V, and I'll run prime95 for a few hours now.
Thanks a lot for the help, I'll edit this post with the result.
Edit: Ran prime95 for 12 hours no problems, everything seems to be working.
I don't suppose anyone knows if the OCZ platinum RAM uses Samsung or Hynix chips? I have to flash the BIOS of my Gigabyte GTX 275 because of screen detection issues, and there are two different BIOS depending on what type of memory you have. I've been searching but it looks like it's hard to tell without taking of the heatspreader (something I'd rather not do).
---Never mind, it looks like they use Micron IC's. Maybe gigabyte will release a BIOS for those chips as well soon.---