BSOD, Suspect Video Card

I have been having nothing but problems with my xfx 260gtx black edition. I was getting random crashes and artifacting. After doing some research, it turns out that the factory overclock is unstable on many of these cards. I downclocked the card to the non black edition, and some of these problems went away. However, I now get random bsod's when watching youtube videos or playing certain games. The minidump is included with this post.

Thanks

BUGCHECK_STR: 0x124_AuthenticAMD

CUSTOMER_CRASH_COUNT: 1

DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT

PROCESS_NAME: APB.exe

CURRENT_IRQL: f

Pretty sure this means its hardware right? Leading me to think video card is still the culprit.

Any help would be appreciated.