My son, an IT guy at a prominent special effects house, just built a new system for my photographic work. It has an overclocked 2 gigahertz dual core AMD processor, two gigabytes of ram, an ABIT AN8 SLI motherboard and a 400 gigabyte hard drive. However, though the motherboard is set up for SLI, the graphics card installed is a non-SLI Radeon X700. Someone told me that because of that, the non-SLI graphics card, that the OVERALL performance of the system, not just the GRAPHICS performance, would be adversly affected. Is that true? If so, any suggestions for a reasonably priced graphics card that would give maximum performance - graphics and overall - for 2D Photoshop use?