Update: I raised VCore to 1.2375. That's two more increments to the vcore.
I haven't touched any other settings except vcore and fsb.
Ran 4 instances of prime95 again (as in, copy/pasted folder and ran FOUR individual windows of it, with EACH one running a test).
Again, got myself an error in ONE window.
ERROR: Rounding was .5, expected less than .4.
Do you guys think this has to do with the overclock? Or just because four instances of P95 might be conflicting with each other...