CPU Scaling is an article on Fast Graphics that puts the performance of different video cards across a range of CPU speeds in perspective, benchmarking a crop of 2D/3D combo cards (TNT, Banshee, XPERT 128, Savage 3D, and the Matrox G200) at dozens of increments along the CPU scale, even offering an example where a 240 MHz CPU outperforms a 400 MHz CPU (using certain odd multipliers).