Alrighty, thanks everyone. I do actually have a question about this now, since I'm trying to overclock it. If I should just make a new thread in the OC forum, let me know.
I'm OCing the card using CCC's built-in Overdrive, and it seemed to be OCing like a goddamn monster. Now, I should mention that for benching between increments on my previous card, I used ATI Tool 0.27 for about 10 min until it seems like I've arrived at my final clock, at whih point I bench it for 30 minutes to ensure stability.
For my 6850, I kept applying this method and never saw a single artifact during the benchmarks. But after about 5 minutes of benching with my Core at 905 MHz and the Memory at 1260 MHz, the screen started having this weird corruption where at first I saw a couple static lines randomly, then the screen image became a bit fuzzy and started moving to the left slowly, cycling over to the right side of my screen once it passed the left side. And all the while this happened, there wasn't a single artifact in ATI Tool. I checked my HDMI cables and found that they were definitely in place, so I ended the test and the screen stayed... weird. I turned the screen off then back on, and it was fine again.
The temps definitely aren't dangerous, they hit 67c max. Is my PSU not able to handle this clock, or does ATI Tool just not show artifacts correctly? Should I use different software?
Let me know if I should take this over to the OC forum.