We sourced a bundle of desktop PCs for under £500, put them through their paces in the PC Advisor Test Centre, and come up with our Top 5 budget systems of September 2008. And we've also got a simple to understand, expert buying guide, for all PC bargain hunters.

There's never been a better time to buy an inexpensive PC. The popularity of such innovative technologies as quad-core processors and 24in flat-panels on more expensive systems means that you can pick up a dual-core bargain with a decent screen for well under £500.

This month we've sourced a bundle of desktop PCs for under £500, put them through their paces in the PC Advisor Test Centre, and come up with our Top 5 budget systems, including PCs from the likes of Dell and Mesh.

Each of these PCs scores well for value, performance and features, but some are better at specific tasks. So be sure to read each review, and our expert, up to date buying advice, before you make your purchase.

NEXT PAGE: budget desktop PCs buying guide

We sourced a bundle of desktop PCs for under £500, put them through their paces in the PC Advisor Test Centre, and come up with our Top 5 budget systems of September 2008. And we've also got a simple to understand, expert buying guide, for all PC bargain hunters.

Budget desktop PCs buying guide

Processor: Even at this price, you can find some extremely fast processors. Among the excellent, affordable chips available, Intel's superb Core 2 Duo E8500 is a popular choice - two of the systems in this chart feature it. Prices should drop now that the E8600 has become available.

Lower-cost alternatives include the E7000 and E4000 series of chips, although these offer weaker performance at any given clock speed.

Memory: In this Vista-dominated age, 2GB of RAM is almost a requirement.

You may be able to make do with 1GB, but we wouldn't recommend it. The bulk of sub-£500 PCs are now fitted with 4GB.

Make sure you're getting the full benefit of the memory - some onboard graphics controllers use system memory, which will slow things down. And check your motherboard has free memory slots if you plan to upgrade later.

Storage: You can never have too much storage space. Digital media content such as video and music files will quickly fill a reasonably sized hard drive, so buy the biggest you can. A 320GB drive is a good investment, although hard-drive space is relatively easy to add later. If you're planning to upgrade hard drives internally, make sure you've got enough free drive bays in your system case.

Look for a DVD drive that can write to the -R/+R formats at 16-speed or better. If you want to copy 8.5GB at once, get a drive that can write to DVD-R DL and +R DL at 12- and eight-speed respectively. Keep an eye out for some of the new 22-speed models.

NEXT PAGE: budget desktop PCs buying guide: flat-panel, graphics card and audio

We sourced a bundle of desktop PCs for under £500, put them through their paces in the PC Advisor Test Centre, and come up with our Top 5 budget systems of September 2008. And we've also got a simple to understand, expert buying guide, for all PC bargain hunters.

Budget desktop PCs buying guide, part II

Flat-panel: PC manufacturers have to make compromises to squeeze machines into this category and often start with the monitor. But you don't want to spend all of your computing time looking at a poor-quality display.

All the PCs in our chart come with flat-panels. The most common size is 19in - the quality of larger monitors is unlikely to be good enough at this price. Look for a monitor with a digital DVI or HDMI connector to ensure the best picture quality. Make sure the PC has one too.

Graphics card: With the best graphics cards retailing for £300 or £400, a sub-£500 PC is unlikely to satisfy a hardcore gamer. Nonetheless, the best machines in this category come with decent cards.

You should be looking for PCs that can produce 50fps if you're going to be playing games - 70fps or 80fps is better still. The fastest chip in this price range is the GeForce 9800 GT, but including one may require compromises elsewhere.

The GeForce 9600s are a good alternative. They can support DirectX 10.0, but they're unlikely to be powerful enough to make the most of tomorrow's DirectX 10.0 games. They've got plenty of pace to tackle today's games.

Sound card and speakers: You're unlikely to get a standalone sound card at this price. Most motherboards have decent built-in chips that can handle six-channel sound. To get the best out of them you'll need a 5.1-channel system (five speakers and a subwoofer), but most people will be happy with stereo two-channel audio.

You won't necessarily get separate speakers or a sub at all.

NEXT PAGE: Top 5 desktop PC reviews

We sourced a bundle of desktop PCs for under £500, put them through their paces in the PC Advisor Test Centre, and come up with our Top 5 budget systems of September 2008. And we've also got a simple to understand, expert buying guide, for all PC bargain hunters.

Top 5 budget desktop PC reviews

  1. Arbico Elite 8595 review
  2. Chillblast Javelin review
  3. CyberPower Gamer Infinity 850 review
  4. Mesh Pulse 8600GT review
  5. Dell Inspiron 530/2583 review