I am looking to buy a second MSI HD 6950 graphics card but if I use the second x16-x8 slot on the mobo I have no room for cooling. So my question is can I use the "dedicated physix" slot x4 for the second card with no issues or will I have performance issues?
I do not want to have to buy a new mobo to crossfire with better cooling, if I do I will be going back to Nvidia!
Whats wrong with using the normal slot? You state you'll go back to Nvidia if you have to buy a new board, so I doubt the problem is a cooling issue. Their cards run hotter then AMDs so whats the real reason? I don't think you want to use the 4x slot. 16x/4x on PCIe 2.0 is usable, but you tend to see lower scores throughout.
I'd get the second card and put it in the slot your supposed to. Make sure you have some good cooling/case fans going.
I was trying to point out that even if you went with Nvidia, you'd have the same problem but with hotter cards. Either way you have limited space between the cards, or you need a new board. Glad to see that third slot doesn't run at 4x.
I want to liquid cool my vid cards but don't want to spend $600 to do so. Thanks for the good answers! One last thing I have the Coolermaster HAF 932 case so air cooling is no issue but I want to mount a rad on the top but not sure it would fit. The rad is a Swiftech or EK 4x120mm, the reason for the large rad is I plan on OC'n my i7 950 to well over 4.5Ghz...can a single 4x120 fit or should I use just a single 3x120 or 200mm?