7970 or 680?

[Ness]

Well, now that the 680 is out I've decided to ask here, which should I get? There are no videos of either running Dolphin on YouTube and its by far the most intensive thing I run next to maybe Battlefield 3. I mostly play on 3 monitors with Eyefinity at 5760x1080 and was wondering which would be better for that? My other specs are in my signature, and I'm also planning on upgrading to 32GB 1600MHz. Anyways, yeah, the 680 beats the 7970 in almost all benchmarks and is $50 less however its also way hotter and requires more power, which may cancel out the possibility of SLI in the future (I run a Kingwin Black Box 750w)