By far the most impressive-looking PC we've seen this month is CyberPower’s Gamer Infinity i7 Heaven. Finished in stealth black both inside and out, it looks more like a piece of military hardware than a consumer desktop PC.

Twin ATI Radeon HD 4890 graphics cards are paired in a CrossFireX configuration, providing the CyberPower Gamer Infinity i7 Heaven with more graphics processing power than any other system here. We found the Best Buy Chillblast's single-chip HD 5870 to be a better performer in Crysis, but the relative gaming performance of these two systems will depend on a game's CrossFireX support. In Fear, for example, the 4890 combo achieved a much faster result than the 5870.

What this powerful combination doesn't give you is support for DirectX 11.0. This will be necessary for some upcoming games and the DirectCompute 11.0 features in Windows 7, although the CyberPower Gamer Infinity i7 Heaven will still give superb performance on current titles.

The CyberPower Gamer Infinity i7 Heaven's WorldBench 6 performance is outstanding, scoring a chart-leading 152 points. This achievement is largely down to the machine's 3.2GHz Intel Core i7 960 processor - the fastest of the group.

The CyberPower Gamer Infinity i7 Heaven is a considerably more powerful system than the slightly cheaper Eclipse in second place, but it lacks some key features. Most notably, it's the only system in this price category to ship with a 22in flat-panel monitor - the others offer 24in or thereabouts. This Digimate model is also unable to display a full-HD image.

Given that neither a Blu-ray drive nor speakers are provided, the CyberPower Gamer Infinity i7 Heaven would need yet more money spent on it in order to compete with the multimedia capabilities of the other systems here. It also comes with a single 1TB hard drive, which offers 500GB less capacity than most of the competition and lacks the performance increase that could be gained from a Raid 0 array.

Power PCs chart ranking: February 10 issue

  1. Chillblast Fusion Condor
  2. Eclipse Titan i795R585
  3. CyberPower Gamer Infinity i7 Heaven
  4. Arbico Elite 9590 HD
  5. Eclipse Titan X58 i796R489

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