Looking at the high end market, we have several choices. Go with 280 SLI costing $1200 for the video cards alone, which is really out of reach for most. We'll reserve that for the extreme high end. So, looking at the realistic choices for most of us, we can go with a single 280, 9800 GTS SLI, 9800 GX2 or 4850 CF. All offer about the same level of performance. However, most of us run Intel CPUs and would prefer Intel chipsets. So, that knocks out the 9800 GTS SLI and any other NVIDIA SLI solution. The 280 costs $640 at Newegg. So, that makes it too expensive compared to the GX2 and 4850 CF. AMD 4850 CF costs $400 + an X38 motherboard for $170 for a total of $570. GX2 goes for $415 the MSI version at Newegg, which you can pair with a P35 for about $100 for a total of $515.
It's a pretty close race in price and performance between the 4850 CF with X38 and the 9800 GX2 with P35. Both are excellent choices. But IMO the 9800 GX2 has the edge because it costs less and it's drivers are mature. You can see this in Anandtech's preview where some of the SLI vs. CF benchmarks show no improvement in performance for one 4850 vs. 4850 CF. AMD needs some time to tweak the drivers.
With that said, I think that with the R700 and RV7700 XT around the corner, NVIDIA had better open up SLI to Intel chipsets. High end enthusiasts will no longer have to be backed into SLI and NVIDIA chipsets to get high end graphics performance. I believe most enthusiasts will go with Intel chipsets and high end ATI graphics cards in crossfire configuration that match their NIVIDA rivals in performance but have the stability of Intel chipsets.
It's a pretty close race in price and performance between the 4850 CF with X38 and the 9800 GX2 with P35. Both are excellent choices. But IMO the 9800 GX2 has the edge because it costs less and it's drivers are mature. You can see this in Anandtech's preview where some of the SLI vs. CF benchmarks show no improvement in performance for one 4850 vs. 4850 CF. AMD needs some time to tweak the drivers.
With that said, I think that with the R700 and RV7700 XT around the corner, NVIDIA had better open up SLI to Intel chipsets. High end enthusiasts will no longer have to be backed into SLI and NVIDIA chipsets to get high end graphics performance. I believe most enthusiasts will go with Intel chipsets and high end ATI graphics cards in crossfire configuration that match their NIVIDA rivals in performance but have the stability of Intel chipsets.