CNET have published their review of the Dell XPS 630 gaming desktop.
'The XPS 630 combines familiar characteristics of a few desktops we've reviewed recently. Like the Gateway FX7020 and the Uberclok Ion, the XPS 630 is a sub-$2,000 gaming PC with a quad-core processor, respectable gaming capabilities, and a spacious 500GB hard drive. Velocity Micro's ProMagix E2055 is also similar to this Dell system in price, although it has dual-core CPU with a faster clock speed. When you compare the Velocity system with the XPS 630, it becomes apparent that the Dell is a more well-rounded PC, despite the fact that the Velocity has the edge in a few component categories
The biggest differences between the two systems, configuration-wise, are in their processors and their graphics cards, although the memory matters also. The CPU difference is especially interesting, because it represents something of a philosophical gap in desktops right now. Would you rather have a faster dual-core CPU, which will give you lots of speed on most current applications, or would you prefer a slightly slower (although similarly priced) quad-core processor, to the benefit of the few multithreaded programs and games out there right now, and with the promise of more to come in the future? Dell will let you configure the XPS 630 with an array of Core 2 Duo CPUs shortly after launch, so if you like the idea of an XPS 630 with a dual-core chip, you'll have that option soon. For our money, even though the Velocity Micro desktop wins out on a few benchmarks, we'd still go quad-core, largely for the future-proofing aspect.'
Read: Dell XPS 630 - CNET