Even with the added demands of Windows Vista Home Premium taken into consideration, we wouldn't normally recommend an overclocked PC. Pushing a chip to speeds that exceed the settings recommended by the manufacturer can be a recipe for disaster. However, few companies are more adept than Chillblast at wringing that extra bit of power from a CPU.

Against this backdrop, the Chillblast Fusion Vista 6300 OCTV 2.1GHz's Intel Core 2 Duo E6300 chip gets a healthy speed boost - from its original speed of 1.86GHz right up to that aforementioned 2.1GHz. Combine this with 2GB of memory, and you have one of the fastest Vista PCs we've seen yet. It will be available soon for £750 inc VAT from Chillblast.com.

Not every PC in the £750 bracket comes equipped with a good screen, but the Chillblast shows off Vista's Aero interface with a splendid Acer AL1916W LCD monitor. This 19in screen packs in colour and precision, while its widescreen resolution of 1,440x900 is expansive.

The GeForce 7900 GS isn't the best graphics chip available with Windows Vista PCs, but it is a decent performer that crops up in three of our chosen Vista PCs. The sound system consists of the High Definition Realtek onboard controller – not a stunning addition, but few PCs at this price will offer anything better – while the NEC DVD writer is one of the best on the market. The 250GB hard drive isn't particularly impressive although, in truth, this is enough storage space for most users.

The Chillblast isn't the fastest Vista PC we've tested – that accolade would go to the Zoostorm 4-5404 Versatile PC for general performance – but it's a decent performer. Throw in the copy of Vista Home Premium and the excellent flat-panel and this is a worthy number one Vista PC at the £750 mark.

For full reviews of the very best Vista systems available right now, look out for the April 06 issue of PC Advisor, which hits the news stand on 15 February. For a full, in-depth review of Windows Vista, click here.