Has anyone who already owned the new Mac Pro with D300 tried to do any casual gaming on these? Or know if the D300 gaming performance is at least comparable to some mid-low end gaming GPU I ordered a Mac Pro (for my home office) with as many options as I can afford but went cheap with the D300 GPU. I may still have a chance to change the order, but my original thought was that D300 would be good enough for mostly running VMs, development, and researching. I do have a separate PC rig for gaming; but I admit I do like to fire up an occasional game or 2 on my current Mac Pro via Steam during some breaks (so I don't have to leave my office). I do of course have an AMD 7950 so gaming wasn't bad at all. So, now I'm wondering if D300 could achieve the same results for casual gaming every now and then. I am not asking if the D300 is great gaming GPU. I'm asking if it is a horrible gaming GPU or not. I am hoping it would meet my minimal expectations from the gaming front... 30+ frames/sec at lower resolution and lower details... at least better than Intel integrated GPUs... or comparable to mid-low-end gaming GPUs.