Hot on the heels of the Alienware Area 51 750i, announced earlier this week, come two more Alienware gaming desktops. The Alienware Area 51 X-58 and the Area 51 ALX X58, both feature the new Intel Core i7 processor and run 64bit Vista.

The brand-new Intel Core i7 processor is particularly suitable for gaming since it can process a greater number of instructions per clock cycle and can therefore redraw graphics very quickly, making for a more satisfactory and realistic experience.

The machines can be purchased with a choice of ATI Radeon and nVidia graphics cards. Users can also opt to swap the standard 300GB hard drive for a larger capacity. Hard drive options include a 1TB drive or even a pair of  2TB hard drives in a RAID 0 setup. A Blu-ray drive and Sound Blaster X-Fi high definition surround sound audio are further upgrade options.

The Area-51 X-58 comes in green, black, blue or silver chassis while the Area-51 ALX X58 comes in a choice of silver or black. Both have customisable lighting that be programmed to change colour automatically when a particular application is opened.

"By incorporating the revolutionary capabilities of Intel Core i7 and Core i7 Extreme Edition processors into the Area-51 X-58 and Area-51 ALX X-58, Alienware continues to lead the industry in delivering performance levels and in-game benchmarks that shatter all previously perceived limitations," says Arthur Lewis, head of Dell gaming group.

Prices start from £1,349 inc VAT for the Area-51 X-58 and from £2,999 for the Area-51 ALX X58. Both machines are available now.

Alienware Area-51 ALX review