580gtx 1.5gb vs 3 gb

[JJThomp]

Originally Posted by El Topo

Here a review of these cards in sli vs cf: Link

If your going multi-monitor its a good option for sli as the 1.5GB cards can't really handle high res with AA on.

Question: Would these 3GB cards be limited by a dual x8 setup?

I answered your question in the new build thread, but the difference is negligable (<3%). Also Radeon's are better in high res gaming anyways (not to mention they cost less).

Also there really isn't much difference the extra 1.5 gb is bottlenecked by the architecture anyways.