While 64-bit computing has been around for a while (for the two of you who could afford Intel's Itanium, and now Itanium II processors), the dream of 64-bittery for the humble home system has been a long time coming.

The processor struggle continues between AMD and Intel as the war rages on for the top ranking of the market share table. Interestingly enough, of the four machines this month under the $2,500 price tag, Scorpion Technology's Z-Box was the only unit to feature an AMD Althon XP processor. Also interesting was the marginal gains achieved by Intel given their obvious clock speed advantages over this unit.

Despite not being the smallest or lightest notebook, this veritable speed demon packs a 3.06GHz desktop Pentium 4 processor and is matched with an ATI Mobility 9000 graphics adaptor and quarter gig of PC2100 DDR RAM. Another notebook to dispose of legacy parallel, PS/2 and serial ports, it boasts a pair of rear mounted USB ports, S-Video output and FireWire connectivity. Also included are 10/100 Ethernet, a 56K modem and single PCMCIA slot for card expansion.

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.

Despite the processor industry being driven for so long by the now dispelled 'Megahertz Myth', AMD's budget conscious 1.833GHz Sempron 2600+ CPU put in an very good showing.

In the performance stakes the 3200+ came up trumps, finishing middle to top of the pack and clearly cementing itself as a solid performing processor for home, office or pure entertainment.

Slightly less sturdy than previous Dell models we have seen, the D500 is finished in attractive silver bezel housing, the keyboard is comfortable to use and offers all the functionality of standard-sized desktop keyboards.

We find this model hovering in the no-man's-land between desktop replacement and notebook. Its large form factor and huge screen come at the expense of weight, while the wireless and large battery do make it viable for users on the move.

Your PC is only as good as your last upgrade, and this is truer than ever with current gaming and software applications milking machines for everything they're worth.

Small form factor (SFF) PCs now have their foot well and truly in the home entertainment and IT/CE crossover market due largely to their aesthetics, functionality and quietness of operating volume. Westan's Biostar product looks to continue along these lines, offering a multimedia PC with all the performance of AMD's 64-bit desktop processor architecture.

It's inside that you find a HyperThreaded Pentium 4 3GHz processor with an 800MHz FSB, plus a gig of DDR400 RAM in dual-channel configuration.

This is no ordinary notebook, sporting Intel’s 1.6GHz Centrino processor with a 1MB on-die L2 cache, 400MHz frontside bus and a half gig of DDR. It’s nothing short of impressively fast.

The 9300 is reminiscent of its predecessor, the Inspiron 9100, which was pitched squarely at power users and gamers looking for plenty of grunt. This product refresh takes it one step further by using a mobile processor rather than the desktop CPU found in the 9100.

Another notebook to embrace the entertainment market and sell units with widescreen 16:10 aspect ratio displays, this PowerNote packs some serious hardware under the hood, pushing not only AMD's Mobile Athlon 64 3200+ processor, but also ATI's Mobility RADEON 9700 a 60GB, 7200rpm hard disk drive and a multiformat 4-speed DVD burner for disc creation on the go.

The first Dothan notebook to roll off the rank, we were interested to see exactly how much real-world gain Intel is offering in its revised Centrino platform.

Housed in a fairly attractive albeit plain chassis, this machine comes shipped with performance where it counts as well as plenty of potential for the tweakers and serial upgraders. A Pentium 4 3.0GHz processor is impressive enough for a system with a price tag under $2,500, but to also include a DVD burner, TFT display, good quality 2.1 speaker set up and wireless keyboard and mouse combo is previously unheard of.

Although the mobile marketplace has been changing in the face of Centrino and the slow but gradual tablet PC adoption rate, large form factored (greater than single spindle) notebooks are still the order of the day.

The first PC Direct machine we've tested features an eye-catching black anodized case with custom stealth drive face plates on all drives and front USB and audio connectors. Easy access via the tool-less snap panels takes this case the extra mile.

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.

Finding a good PC or notebook for the family is not as hard as you might think. PC Authority  puts the latest models to the test.