Originally Posted by wheeljack12
the other reason I am debating gtx 580 3gb's is newegg has zotac's 3gb for $540 cdn. Most 3gb cards are going for $590 to about $620 cdn with all being evga, zotac and palit for cdn retailers. I would get the MSI lightning extreme but it's a rare find.
You would do your system far more benefit buying a Sandy Bridge or highly clocked 1366 motherboard than any graphics move you can make.
Your graphics are great for the GD235HZ monitor, there is no need for more than 1.5GB VRAM for 19X10. Likewise, there is no need for 4 GPUs for 19X10, even with 3d Vision.
Your SLi scaling is being limited by the AMD CPU. I say this as someone with a 3.4GHz Phenom II in one rig, and a 3.4 GHz i7 in the other, and first hand experience with the CPU holding back the variety of GTX5XX SLi rigs I've used in that rig.