no, it's not that much faster at all. You do get a few extra things, like 2 GB more RAM, 70 GB of HD space, and 256 VRAM. But the RAM and HD can be upgraded cheaply and easily yourself, and the VRAM isn't going to matter unless you're driving multiple large monitors. You do also get twice the L2 cache on the higher end model, but the bottom line is that you're paying 25% more money for *maybe* 10% more speed, and probably a lot less than that.