I was interested in upgrading to a Mac Pro I would go with the 2.7 based on price, but I'm unimpressed with performance for Photoshop. I currently have a Dual 2.5 G5 with the stock 128MB ATI 9600 Graphics card. Has anyone upgrade their card to say a X800 and seen a decent performance boost? If I upgrade my card I'd wait on buying a Mac Pro until the next revision...