This is something that I've been wondering about for a little while. I have upgraded the video cards in all my Cubes. Two of them currently have the 2MX, and one a 7500. I've had a slight preference for the 2MX due to its compatibility with the Cube faceplate, but had been under the impression that the 7500 was the better performing card of the two. At least in the OpenGL Wiki we currently have going, the 2MX scores over twice as high as the 7500(460 in a cube for the 7500, vs 1179 in a Cube). I know that benchmarks don't necessarily reflect real-world situations, so I'm wondering if the OpenGL test is a real measure of how I can expect these cards to perform-especially under OS X. Two of my Cubes are primarily OS 9 machines, while the third is almost exclusively a Leopard machine. The Leopard machine currently has a 2MX, but I'm wondering if I would see any benefit to putting a 7500 in it. If nothing else, I appreciate the fact that the 7500 seems to run a fair bit cooler than the 2mx. Availability is not an issue, as I have extras of both cards on hand. Of course, I know the real answer is to get off my rear end and get my 6200 flashed for my Leopard system, as that will give me CI support. That same system also has an 800mhz Sonnet upgrade with 1mb of L3, so I expect it would do really well in Leopard with a CI card(it's not bad now).