Choosing a CPU for your PC isn’t an easy task. Here are our picks for budget, mid-range and high-end systems.

Thought Core 2 was the only choice? Think again... AMD's far from dead.

It’s important to choose a power supply that meets your needs. Here we show you what to look out for.

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

The 915 is an good budget choice, but elsewhere this family is eclipsed by newer offerings.

In its day, it held the speed crown, but today’s dual-core CPUs leave it trailing for power, efficiency and value.

If you’re looking for a well-featured, great-value desktop replacement, the A7S fits the bill. Plenty of grunt, a 200GB drive and great features - Asus is looking better and better.

Plus, how we work out the ratings.

Sempron offers decent performance at rock-bottom prices for those on tight budgets.

The 720’s features make it a winner. But the high price reflects Map Share: which isn’t available in Australia

Some interesting new features, but they’re too niche to justify the price.

It lacks the frills of others here, but the Toshiba is ideal if you want a 17in screen at the lowest price.

Quick-release hard disks can’t make up for design flaws.

Stuck for storage space? Upgrade to one of the latest disks and you’ll benefit from better performance too

All the power of a desktop PC in a fraction of the space. We put a selection of desktop replacements to the test.

All the power of a desktop PC in a fraction of the space. We put a selection of desktop replacements to the test.

Stunning build quality and design, but pricey and bigger than most desks can accommodate.

Play your video, photo and music files on your TV from a networked PC. We put five network players to the test