I read a
Tomshardware article about the graphics card that'll be in the Mac Pro (W9000, but there'll be two with an outrageous 6 GB of VRAM), evaluating its gaming potential, and it was able to hold its own. From a price/performance ratio, of course, it's terrible, but you should be able to max things out no problem. That is, as long as the OS X drivers aren't awful.
I came here just to post that article.
In fact I'm very interesting the AMD drivers on OS X. Apparently the reason the Mac AMD 7950 performed so bad in early reviews was all down to drivers. That card is currently still faster than even the NVIDIA GTX 680 in OpenCL, and since Apple is now moving towards AMD cards for the next MP; I do wonder if the drivers will greatly improve.
I'm rather interested in the 7950, and I do wonder if there will be new 8xxx series cards for the current Mac Pro.
If Anything the current Mac Pro is great for gaming, and at resolution over 1920x1080 the differences in CPU tech is a new FPS ranging from 1-5 at most.
The GPU is the primary factor.
This review of the Ivy-Bridge EP cpu is one of the few to also include the i7 980x which is the W3680 or 3.33Ghz Xeon on my Mac Pro.
The W3680 is still a very good CPU, even today.
http://www.anandtech.com/bench/product/551?vs=142
Unless you're playing at a low resolution( which is more CPU intensive), or a game that uses the GPU more;you won't notice much at resolutions over 1920x1080.
This is one of the few reviews to include the i7 980x in reviews with the latest tech. It holds up extremely well at HD resolutions and higher. We're talking about 1-3 fps differences.
http://www.guru3d.com/articles_pages...review,11.html
http://www.guru3d.com/articles_pages...review,15.html
To quote their handbrake scores
The Gulftown Core i7 980X pushed out 28 FPS in 2008.
The Sandy Bridge-E based Core i7 3960X pushed 30 20 2011.
Now the Ivy Bridge-E Core i7 4960X manages 33 transcoded frames per second in 2013.
You need to wonder, what happened to the raw processor performance increase? This is not exactly Moore's Law anymore.
So if Apple can get AMD to sort out it's drivers the New MP will be more than capable of playing games, especially since the W9000 has similar performance to the 7970, all be it in a Windows/Direct X environment.