Still not sure whether it's worth upgrading to Vista? We put XP and Vista through the ultimate face-off.

After the disappointment - perceived or otherwise - of Windows Vista, many are pinning their hopes on a revival with Windows 7. And from our first impressions of the pre-beta code, that's exactly what they can expect.

Will splashing out on expensive RAM make a real difference to PC performance? And if so, how much should you buy? We supply the benchmarks and lay the details bare

Our full guide to saving cash-saving secrets is here, from how to get discounts on PCs, to SIM only phone contracts, the best DSLR cameras deals, and discount licensing from Adobe, Microsoft and others.

With Windows 7 arriving soon, is now the time to upgrade to 64-bit? Here's the first part of our guide to everything you need to know

Stack your system full of software without paying a penny, with our guide to essential downloads

How important is RAM size to the way we use 64-bit Windows? And are there other ways to get around the problem? We offer a couple of tips to get you through your 64-bit RAM blues.

A very likeable all-in-one – albeit limited in its usefulness beyond basic functions. Read our review of Shuttle's new all-in-one X50

Comprehensive, competent and configurable protection at a good price. This is the best security suite out there

A friendly suite for the less-experienced user, but technical types may find it limiting.

A highly usable all-round security suite, but ultimately a strong runner-up rather than a new champion.

A new interface and extra web-protection capabilities make AVG our top free antivirus choice

A big improvement from Microsoft, but there’s still some way to go. OneCare can now call itself a serious security contender.

Symantec’s latest offering is lighter than ever and an extremely effective security package. And get this, a RAM footprint smaller than Kaspersky

High-capacity desktop drives have never been so affordable. Darien Graham-Smith puts 23 to the test to find the best

A well-featured package with some unusual tricks that falls just short of a first-rate performance.

More approachable than ever, with excellent malware detection in an affordable package

A winner on the strength of its excellent protection, coming first or equal-first in our malware and firewall test.

A professional product, but it's a poor performer for the price.

AMD’s next generation of CPUs brings 45nm technology and higher clock speeds - but is that enough to compete with Intel’s latest and greatest?