Over the life of the XPS line, Dell has introduced models which include contemporary cutting-edge features. The first example was the XPS 600 Renegade released in early 2006, which included an Intel Pentium D Extreme Edition 965 processor that was overclocked at the factory from 3.73 GHz to 4.26 GHz. Despite the overclock, Dell honored Intel's warranty for the processor. The case featured an air-brush paint job completed by Mike Lavallee. Most notably, the machine was the first commercially available system to feature a Quad-SLI configuration, with four custom NVIDIA GeForce 7900GTX graphics cards with 512 MB of memory. It also included a Western Digital hard drive spinning at 10,000 RPM. The XPS 600 Renegade had an introduction price of $9,930.