Mark Kyrnin: "Dell's XPS 730x is an architecture shift for their XPS 700 series systems. The primary difference is the use of the new Intel X58 chipset and Core i7 processor. This gives it a good boost in performance over the standard 730 model. They continue to use the excellent albeit large and heavy case that makes upgrading extremely easy. Buyer's have a good range of options to upgrade the system with as well if they want more than the standard configuration. The downside to the XPS 730x is its higher than average cost for a performance gaming system."