Holiday Buying Guide: Finding Your New Desktop PC

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The holidays are upon us, and it's a fine time to consider replacing your aging desktop PC. Much has changed in the past year, with new processors and graphics cards from AMD, Intel, and Nvidia delivering performance enhancements at every price point. And you still have a wealth of options to choose from, whether you're shopping for a fixed retail configuration or customizing a system from a boutique PC vendor. Colorful cases of all shapes and sizes have long replaced the humble beige box, but indecipherable naming conventions aren't making shopping any easier.

Presented with so many possibilities, you need to narrow the field by considering what you want to use your new desktop for. Are you an avid photographer looking for a speedy but cost-effective platform for editing high-resolution images? You'll benefit from buying a machine with extra RAM and a discrete graphics card. If you've acquired an extensive media collection, and you want an inexpensive and efficient way to pipe it to your HDTV, a compact PC tailored toward media sharing and playback may be your best bet.

Whatever your needs, you can find a desktop configuration to fit the bill. If you're the tinkering type, or simply interested in learning more about the inner workings of your PC, check out "The Perfect PC: Don't Buy It, Build It" for a step-by-step guide to constructing your next desktop yourself.

Desktops fall into three major categories, each with its own range of price and performance: all-in-one PCs, compact PCs, and tower PCs (which we further divide into budget, mainstream, and performance subcategories). Each style of machine has different strengths and weaknesses, and choosing the one that's best for you depends largely on how you plan to use it.

Once you've picked the appropriate desktop category, our guide to PC specifications will help you select a system that delivers the performance you need, while staying within your budget. And when you're ready to buy, check our shopping tips for advice on how to get the most from your investment.

All-in-One Desktops

Gateway ZX4300-01e all-in-one desktop PC
All-in-one PCs are self-contained: Components are mounted behind a display, with a screen size ranging from 18 to 27 inches. Since you have no cords to manage or peripherals to juggle, setting up your new all-in-one PC can be as simple as pulling the machine out of the box and plugging it in.

With their compact size and integrated displays, all-in-one PCs can reside almost anywhere you have a spare power outlet. Most all-in-ones also offer touchscreens, with support for Windows 7's multitouch gestures.

All-in-one components vary from brand to brand, but you can expect to pay more for an all-in-one than for a similarly equipped standard desktop; again, some models target buyers on a tight budget, while others load up on performance-oriented components (at a higher price, of course). For example, low-priced all-in-ones such as the Gateway ZX4300-01e use laptop or netbook processors and integrated graphics; you'll get reduced performance to match the reduced price tag.

HP TouchSmart 600 Quad all-in-one PC
If you have a larger budget, you can opt for a model like the HP TouchSmart 600 Quad, which includes a quad-core processor (most often seen on full-size desktops) to deliver superior performance, and sports a roomy 24-inch screen. You'll be paying in the area of $2000 for those high-end specs, however. Whatever your needs, you'll likely find an all-in-one that's just right; check out "All-in-One PCs for Everyone" to read about some of our favorite models for every scenario.

Many all-in-one PCs come with a wireless keyboard and mouse, Bluetooth support, and Wi-Fi connectivity. This reduces cord clutter to a minimum--an important consideration in spaces where attractive decor or efficient use of space is at a premium. For ranked charts of all-in-one PCs that we have tested in recent months, see "Best Big-Screen All-in-One PCs" and "Best Budget All-in-One PCs."

Compact PCs

As the smallest members of the desktop computer family, compact PCs often omit features to deliver computing power in a tiny package. The combination of energy-efficient components, quiet operation, and small size makes compact PCs ideal for people who want a nonintrusive machine. A typical compact PC costs between $300 and $600, though the price rises as you add optional upgrades.

Dell Zino HD compact PC
Compact PCs tend to be equipped with laptop or netbook components, such as Intel Atom processors. That limits their usefulness for tasks that demand lots of processing power, but it makes for quiet, energy-efficient operation. Not all compact PCs are created equal, however, so pay attention to specifications when shopping. Some compact PCs are configured for as low a bottom-line price as possible; others are packed to the gills to provide optimal performance in a tight space.

When you're checking out a compact PC, keep an eye on the number of available ports, and think about what you'd like to use. The smaller the system's footprint, the fewer features you can reasonably expect--and that includes fewer connectivity options. HDMI ports have become increasingly common, and are an asset for home theater setups. The typical hard-drive size is 320GB, though 250GB is also common; we've seen some compact systems carrying up to 1TB (for a $100 upgrade premium). For a chart of recent high-ranking PCs in this category, see "Top 5 Compact PCs."

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