Sorry to bump this up from the dead, but I couldn't find a 64-bit compatible Memtest & couldn't get the 32-bit one to work on my system. I'm just going to assume it's a bad stick now because it works fine with it out. Even if I could get Memtest to work, I don't think it would matter. What you all have said makes sense, it should be dead.
I looked at Corsair's warranty page, and didn't see anything about their warranty regarding overclocked RAM. Could someone please answer my question I had: Does Corsair's lifetime warranty cover RAM that's been overclocked? Sometimes, overclocking hardware can void warranties. Don't think that I haven't tried looking, because I've searched and found nothing. Anyone had any personal experiences or just know if the warranty is voided? Again, I appreciate all the help you guys have given me.