NVIDIA’s current list of graphics products reads like a mathematician’s crib sheet; there are no fewer than 10 active SKUs in their GTX 200- and 9000-series of graphics cards. It’s generally understood that higher model numbers typically mean better peformance, but the subtleties behind the GSO / GT / GTX / GX2 monikers are enough to confuse even the most stalwart tech gurus. NVIDIA admits to creating some buyer confusion, and plans on making things easier from here on out with the model type coming first (GTX