Will this video card make the difference?

[jca]

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.

[Krago]

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.