If your PC is less of a speed demon and more of a dinosaur then it's time to upgrade your CPU. We put the latest low, mid and high end processors to the test.

We've taken seven top business PCs and run them through their paces to find out which should be your next upgrade.

Many people upgrade their PCs by adding the latest CPU or more memory, but leave their old hard disk in place. The humble hard disk is one of the slowest components inside a PC (in fact, only optical

We put every current model from ATI and NVIDIA through its paces to find out which offers the best performance and value.

Are you kicking around an old clunky PC that looks like a relic from the Stone Age? Google Zeitgeist (www.google.com/press/zeitgeist.html) tells us that while Windows XP accounted for 46 percent of the OSs used to search Google during February 2004, 24 percent were still using Windows 98 and Windows 95, indicating there are still a lot of late-1990s PCs kicking around. Even if you’re running something from the 1GHz days, it’s probably time to think about an upgrade. But it can easily get to the point where you’re upgrading just about every component. In that case, you should seriously consider looking at the excellent bargains available in new PCs today.

Buying the right case is highly important when building a new PC. We put five through our checks

We put six sub-$500 pocketable cameras to the test

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

Faster wireless networking is finally within reach. We test and rate every draft-n 2.0 ADSL modem router on the market.

Speed up your home network with these wireless routers, including faster speeds, better gaming and VoIP handling and automatic security.

Small form factor PCs have been around for a while, and barebones PCs for even longer. Traditionally a barebones PC is a basic shell, including a case, power supply and motherboard at minimum, and occasionally tooled up with a few extras like RAM.

Whether you're upgrading your existing PC or building one from scratch, the motherboard you choose is of pivotal importance.

Whether you're upgrading your existing PC or building one from scratch, the motherboard you choose is of pivotal importance.

DDR (Double Data Rate) RAM is a relative newcomer to the PC as system memory, although it is certainly not a fledgling technology. Graphics cards, and other components that require much higher memory

We know you want to play games, so we've put 18 PCI Express graphics cards under the microscope to see who really does the job the best.

From Celerons to Core i7s, Semprons to Phenom IIs, David Bayon tests Mainsteam desktop processors and finds the best budget, mid-range and enthusiast (gaming) choice for you.

With so many factors to consider, choosing a motherboard can be a bewildering exercise. We put 11 models through their pace to find the ultimate in performance, flexibility and value