Yet another system based on the Intel Core 2 Duo E8500, the CyberPower Sli KO GT easily outperforms the competition in our Crysis and Fear games tests, while making no compromises on general desktop apps.

If you’re into customised cases, you’ll love the way the CyberPower Sli KO GT looks. The transparent side panel reveals a huge Asus cooler, a pair of memory modules with equally impressive heatsinks and the enormous nVidia GeForce 9800 GX2 graphics card, which helps this system deliver by far the fastest gaming results in the chart. Because the supplied motherboard is scaleable link interface (SLI)-capable, you could add a second 9800 GX2 later for even greater speed.

The CyberPower Sli KO GT is supplied at 3.8GHz. We don’t test overclocked systems in our charts, but its performance at a stock speed of 3.16GHz makes it clear that the competition won’t come close at full tilt. You also get an enormous 750GB hard drive, so you should be able to install as many games as you like.

As for down sides, the front door and many of the exterior case components are made of a cheap-feeling plastic. The CyberPower Sli KO GT also comes without surround speakers or a Blu-ray drive and the 22in ViewSonic display, although excellent, is starting to look a little small.

Chart ranking: Power desktop PCs (August issue)

  1. Chillblast Fusion Thunderbolt
  2. Mesh Xtreme X9450 GTX Pro
  3. Arbico Elite 9870EX
  4. CyberPower Sli KO GT
  5. Dell XPS ONE DSGi E6550

>> NEXT PAGE: Power desktop PCs buying advice and our expert verdict