surrounding the exposed core with a conductive pen to unlock these pipelines. This could only be done on cores made before week 43 of 2004. Dell promised graphics card upgradeability, but only delivered the arguably small 9700 to 9800 step for 9700 owners (at a rather steep $399 price tag, including technician to install it), and never delivered the promised upgrade to the 9800 owners. This model also suffers from a whine on the headphone and microphone jacks that are located on the left of the unit. This is because of shared space with the leftmost fan, and the spinning of said fan causes interference. There is no known fix than to otherwise use a USB, FireWire/1394 or PCMCIA-based audio device or card for sound output. Tablets XPS 10 The XPS 10 was an ARM-based convertible tablet with a keyboard stand, similar to Microsoft's Surface RT. The tablet, which ran Windows RT, was unveiled on August 30, 2012 and discontinued in September 2013. Special Editions Dell has introduced a handful of "speciality" models which were based upon particular models in the XPS series, but had unique characteristics. These included custom cases and higher-performance parts (processors, video cards, etc.). Some of these models are considerably rare because they were produced in limited quantities and were either extremely expensive or give-away only (as was the case of the XPS X-Men Edition, see below). XPS 600 Renegade The first example of a special edition in Dell's XPS series 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 MiB 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. XPS X-Men Give Away In 2007 Dell announced a special X-Men version XPS desktop system that was going to be given away. The system had a value of around $10,000 and featured a one-of-a-kind quad NVIDIA video cards and Intel Pentium 965 Extreme Edition processor. The case resembled a standard XPS 710 series