The Sony Vaio VGN-AR51M is the sort of laptop you can quickly pack away at the end of the day (it's light enough to carry from room to room), but it's powerful enough to be used in place of a desktop PC.

Sony has had to make few compromises, so the Sony Vaio VGN-AR51M will suit many users.

The Sony Vaio VGN-AR51M features a 2GHz Intel Core 2 Duo T7250 processor and a generous 2GB of RAM, which combined to notch up a healthy WorldBench 6 real-world speed score of 77.

The nVidia GeForce 8400M GT graphics chip also proved no slouch, allowing the Sony Vaio VGN-AR51M to achieve an impressive 22 frames per second (fps) in our graphics test – very high for a laptop. Battery life was less impressive at just 82 minutes. However, as the Sony Vaio VGN-AR51M weighs nearly 4kg it's likely to be plugged in to the mains for most of its working life.

See our Laptop Advisor website for expert reviews of today’s best laptops, plus read our essential advice to make sure you choose the right specs

The Sony Vaio VGN-AR51M's superb 17in glossy display is capable of producing vivid colours although, as with other models, this is fairly reflective as a result. Unfortunately the resolution tops out at a maximum of 1,440x900 pixels.

Sony has included a Blu-ray drive, but you won't be able to view HD discs at their full 1,080p resolution of 1,920x1,080 pixels unless you hook the Sony Vaio VGN-AR51M up to an HDTV via the high-definition multimedia interface (HDMI) port.

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