The affordable, all-purpose Lenovo ThinkPad SL400 laptops offer much of the look and feel you'd expect from a more expensive ThinkPad.

Usually, ThinkPads don't come cheap. You expect to pay dearly for the classy keyboard, rugged chassis, and whatever top-notch parts lie under the hood. That's not quite the case with Lenovo's ThinkPad SL400 series of laptops.

Inside the Lenovo ThinkPad SL400 we tested lies a reasonably speedy Intel Core2 Duo 2.26GHz P8400 CPU backed up by 2GB of RAM and a 256MB nVidia GeForce 9300M GPU. Not too shabby.

In our tests, this combination performed well, garnering a score of 84 on our WorldBench 6 benchmark test suite. The Lenovo ThinkPad SL400 makes a strong enough showing to finish near the top.

Lenovo rolled out the Lenovo ThinkPad SL400 before nVidia unveiled its GeForce 9400M, which debuted in the new Apple MacBooks - and the laptop suffers for its bad timing, as nimbler graphics processors will soon appear in new all-purpose notebooks.

Still, this Lenovo is a good performer for the price. Its six-cell battery kept the Lenovo ThinkPad SL400 working for a little over five hours on a single charge - that's plenty of juice to keep you at the keyboard nonstop during a cross-country flight. The laptop's layout, screen, and beefy-meets-boxy 2.5kg case indicate that Lenovo was shooting for a "strictly business" approach here.

A matte treatment on the screen does a good job of preventing sunlight from bouncing back in your face. The Lenovo ThinkPad SL400's 14.1in, 1440-by-900-pixel-resolution panel is amply bright when cranked up all the way, but it's a tad dim in its native habitat (a standard fluorescent-lit office).

As a result, in most settings, you'll be tempted to crank it up to full intensity, which unfortunately muddies the colours a little. On the bright side (pun fully intended), you can adjust the brightness for Video Playback mode (or any of five other default settings - or text size) with one click on a Lenovo application in the taskbar.

The Lenovo ThinkPad SL400 has a fairly full-featured layout for an all-purpose machine. Four USB slots - two on the left, two on the right - adorn the Lenovo ThinkPad SL400.

HDMI- and VGA-out ports cover higher- and lower-end video support. In addition, you get a fingerprint reader, a webcam, a four-pin FireWire port, a WWAN card, and GPS. The hard-drive bay is easy to unscrew, and popping in a replacement is equally effortless. Less pleasingly, the budget-minded Lenovo ThinkPad SL400 business laptop has a boxier, less-rigid (though still sturdy) case than most ThinkPads have.

You won't buy the Lenovo ThinkPad SL400 for hi-definition audio, either. Music sounds slightly tinny (and hollow), although it got loud enough to distract my neighboring cubemates. Video streamed from Hulu sounded fine, but not robust enough for me to forgo headphones.

One corner that remains uncut is the Lenovo ThinkPad SL400's keyboard, which - in the tradition of superb ThinkPad keyboards - is solid and buttery smooth to the touch. There was no loud clicker-clack as we typed away on the nigh-silent keyboard, and at the same time we could readily discern every key.

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