How about with my own eyes? I've seen it on some and not on others. I judge my experiences on my own and not others. Also, i've used 7970s - 580s - 680s, 460s and 5000s / 6000s. I'll be a broken record yet again, i've seen it on some and not on others. By all means think what you think though, you're welcome to your opinion
Also, sorry if that sounded snide. But if you're basing your opinion on everything from using crossfire 5870's, i'd suggest not doing that. It is not representative of other products on the market now.
Edited by xoleras - 4/10/12 at 11:53am