Quote Originally Posted by jca View Post
Personally, I'd look at nvidia cards over ati for Rift. People have reported problems with both, but nvidia cards seem have much less frequent problems. I 10-box using 2 machines. One is nvidia equipped, the other ati. While I needed to do a lot of measurements and performance tuning, the nvidia machine never had any problems with crashes, black screens, etc. The ati machine had serious problems from day one and took a whole lot of tweaking to get it to run Rift properly.

Something else to consider is video ram. Just as an experiment, I tried to see how many sessions I could run on a single PC. 6 ran ok. Not great, but ok with decent graphics levels. As soon as the 7th account loaded, I was dead in the water. The bottleneck was not the CPU or the GPU, it was video ram.
I have been running RIFT with ATI cards, first with a 4890 and now with a 6870 and have never experienced any of the issues people have reported with ATI cards.

With the 4890 I was using a Core2Quad and now I have a 2600K paired with the 6870.
Main is 30 FPS and the slaves are 10FPS.

Not saying they don't exist, just that not everyone with an ATI card will have issues.