CyberPower has diverted from its usual path with the Gamer Ultra HD II, opting to ditch the dual-core Intel CPU of old in favour of AMD's flagship processor, the Phenom II X4 940 Black Edition. Clocked at 3GHz, this is a faster version of the processor that we've seen in recent months and it scores correspondingly higher in our tests.

While it can't match the WorldBench scores of the E8600-based systems, the CyberPower Gamer Ultra HD II is close enough behind to warrant serious consideration - and if you run applications designed to take advantage of this chip's quad-core multiprocessing, you can expect considerably better performance.

And when it comes to gaming, this PC is able to keep up with the best of them. It, too, comes with an ATI Radeon HD 4870 - a great-value graphics card that delivers a very good gaming experience at this price point. Although this machine may perform a little slower running single-threaded applications than some of the competition, the CyberPower Gamer Ultra HD II is on a par with the Chillblast Fusion Meteor in our Crysis test at ‘Very High' settings.

The CyberPower Gamer Ultra HD II is also an attractive PC. The system case is noticeably superior in quality to those of rival systems and comes with some cool blue interior illumination (albeit without the firm's trademark transparent side panel).

Inside, a 600W PSU should provide the headroom necessary for installing additional components or overclocking the CyberPower Gamer Ultra HD II's base specification. Indeed, overclocking will be expertly handled by the AMD processor, thanks to its unlocked CPU multipliers.

A pair of memory slots are available, but be warned that the compact dimensions of the CyberPower Gamer Ultra HD II's motherboard mean there's little room for any other sort of internal expansion.

The analogue-only monitor is a disappointment, unfortunately, while the lack of external speakers means you'll have