Genuine Dell XPS 420 TP406, Supports Motherboard The Following Processors: Intel Core 2 Q6600 Quad - Newegg.com
Dell XPS 420 review: Dell XPS 420 - CNET
Would a Dell XPS 420 be a decent replacement for a HP Pavilion P6000 desktop? : r/buildapc
Dell XPS - Wikipedia
Dell PW178 - Intel Motherboard / System Board for XPS 420 - CPU Medics
Dell XPS 420 | ancientelectronics
Specs DELL Dimension XPS 420 Desktop DDR2-SDRAM E8300 Mini Tower Intel® Core™2 Duo 3 GB 500 GB Windows Vista Home Premium PC PCs/Workstations (D06X411)
Dell debuts XPS desktop for video buffs • The Register