RAM thrashing program?

[charamei]

Does anyone know of a good program to stress-test the computer's RAM? My Windows drive currently bluescreens every time it tries to do something RAM-intensive (0x7F UNEXPECTED KERNEL MODE TRAP), but MemTest86+ has been through 13 passes and not found any errors yet*. I suspect it's a stress-related memory fault, and I'd like to try stressing it on my Linux drive to see if it's Windows-specific.

I'm running Mint 10 GNOME 64-bit.

*It's still going: I left it overnight and I'm at work now. After 8 hours, though, I doubt it'll find anything in the next 11.