The most tangible example of this new approach is Dell’s XPS One desktop — an elegant, handsome, cleverly designed one-piece computer. If it didn’t have the Dell logo on it, the XPS One might be mistaken for a product of the PC industry’s design leaders, Apple or Sony.

Like Apple’s iconic iMac, the XPS One looks like it’s simply a sleek, flat-panel monitor. The guts of the computer have been stuffed into the back of the screen.

But this new Dell is no mere iMac clone. It makes its own style statement, even though it shares the same 20-inch widescreen display and a similar Intel dual-core processor with the base-model iMac. Where the iMac is squarish and silver, the XPS One is all black and rectangular, with speakers attached to the sides and a wide glass base. It looks more like a small TV set than a computer and, in fact, comes with a built-in TV tuner.

In my tests, I found the XPS One to be much better designed and equipped than Gateway’s iMac competitor, also called the One. In fact, the Dell XPS One is the first Windows all-in-one desktop I’ve tested that I believe matches or exceeds the iMac in hardware design. That’s no small feat, especially coming from Dell.

Unlike the Apple, for example, the Dell has a built-in slot for camera memory cards. It comes standard with a wireless keyboard and mouse, which cost extra on the iMac. Its screen can be turned off with the touch of a button without turning off the computer itself. Its USB and headphone ports are arrayed conveniently on the side, instead of mainly at the rear, as on the iMac.

And, when you wave your hand in front of the black border to the right of the screen on the XPS One, a set of blue, back-lit touch controls magically appear for controlling the playback of music or video. They go away after a few seconds. The Dell also comes with a free year of 10 gigabytes of online backup.

For my tests, I used the least expensive standard configuration of the XPS One, which can be ordered for $1,499 at dell.com/theonepc. It came with two gigabytes of memory (twice the comparable iMac’s standard amount), a 250 gigabyte hard disk and Wi-Fi wireless networking, unusual in Windows desktops.

The computer performed crisply and well for me. I installed several popular third-party programs that weren’t included, such as Microsoft Office, the Firefox Web browser, Apple’s iTunes and Adobe Reader. All worked fine.

I also successfully tested the built-in TV function, which requires a cumbersome external attachment to work with a cable box. I was able to view and record TV shows, something you can’t do out of the box on an iMac.

I still recommend the iMac over the XPS One for several reasons other than hardware design. First, there’s the software. I believe Apple’s operating system, Leopard, is superior to the new Windows Vista operating system, the only choice on the XPS One. In my tests, a reboot of the XPS One took more than twice as long as a reboot of the iMac.

And I regard Apple’s built-in software, especially the iLife multimedia suite, as superior to the Dell’s built-in software, which includes a group of Adobe multimedia programs that are less well integrated and more complex.

The XPS One, unlike the iMac, also came with a bunch of craplets — trial software like Yahoo Music and come-ons for online services like NetZero.

Second, the iMac, unlike the Dell, is immune to the vast majority of malicious software floating around, so you don’t have to run annoying, memory-hogging security programs. The first time I turned on the beautiful Dell I was met with a warning that I had “multiple security problems,” and was led to install a security suite in a complex and tedious process.

Third, defying popular perception, the iMac costs less than the XPS One. The base, 20-inch iMac costs $1,199 — about $300 less. And even if you double the memory, and add a wireless keyboard and mouse to match the Dell, it’s still $1,399 — $100 less than the base XPS One (though Dell is currently running a sale that wipes out the $100 gap). Even the cheapest iMac has a dedicated video card with its own memory, something the base XPS One lacks.

Plus, while Dell offers only 20-inch screens on the XPS One, Apple has higher-end iMacs with huge 24-inch screens for the same price, or less, than the higher-end Dells.

Still, if you want a stylish Windows Vista machine that runs well and won’t cost a fortune, the XPS One fits the bill, despite its unlikely heritage.

• Email me at mossberg@wsj.com. Find all my columns and videos online free at the new All Things Digital Web site, http://walt.allthingsd.com.

The Gateway One

Both new contenders, oddly, are named “One.” I’ve been testing the Gateway One, which can be preordered now at beautyofone.com, and is set for delivery this month. It will also be available at Best Buy stores. Dell’s entry, called the XPS One, will be unveiled later, though Dell is already teasing it on a page buried within its huge Web site.

All-in-one desktops have been around for many years, but they failed to win a big slice of the consumer market. The iMac has been a success, however, partly because it combines beauty and power. It is speedy and can even optionally run Windows. Another factor is that mainstream, nontechie, nongamer consumers are gradually turning away from clunky towers toward laptops and other smaller forms.

Like the iMac, the Gateway One is striking, though the two products look very different. While the latest iMac has a brushed-aluminum front with a black border around the screen, the front of the One is all black, clad in a seamless sheet of plastic. The iMac sits on an aluminum foot; the One’s bottom edge rests directly on the desktop, supported by a small tilting metal stand in the rear.

I can’t recommend the Gateway over the iMac, however. It offers smaller screens and lower resolution — huge factors in an all-in-one machine — for prices that can exceed the iMac’s. It starts up and restarts more slowly. Unlike the Apple, it comes with annoying trial software. It also is noisier than the iMac, and lacks a built-in Web camera. Plus, twice during my few days of testing, it crashed with a blue screen, losing all open data.

The Gateway One comes in three models, priced at $1,299, $1,499 and $1,799. Unlike the iMac, which comes in two screen sizes, 20-inch and 24-inch, Gateway is offering only one screen size across the entire line: 19-inch, considered a middling dimension these days for a desktop. Best Buy has an exclusive on the low-end and high-end models. The midrange model will be sold directly by Gateway. All can be bought only with Windows Vista, not Windows XP.

Shockingly, for those who still cling to the notion that Windows machines are always priced lower than comparable Macs, the entry-level Gateway One costs $100 more than the entry-level iMac, which is $1,199. And the less expensive Mac gives you more in several key areas: a slightly larger screen with much higher resolution, a faster processor and a better video system.

At the high end, the $1,799 Gateway One has a much smaller screen than the comparably priced iMac, which sports a huge 24-inch display with much better resolution for the same price. The $1,799 iMac also has a faster processor. All the iMacs come with a better operating system and better bundled multimedia software.

Apple also offers a built-in camera, while Gateway’s is an ugly snap-on gadget that ruins the lines of the design. On my test model, the camera never stayed on straight and the videos it made contained so much background noise as to be worthless. This may have come from the One’s fan, which seemed to run a lot.

But the Gateway offers some advantages. At every price point it has more memory than the iMac — double the amount in the base model and triple in the $1,799 model. The One also has larger hard disks — 320 gigabytes in the base model compared with Apple’s 250 gigabytes, and 500 gigabytes in its top model compared with 320 gigabytes on the same-price iMac.

The Gateway also has a wireless keyboard and mouse, which cost extra from Apple, plus built-in slots for camera memory cards, which Apple doesn’t offer. On the high-end model, Gateway throws in an external TV tuner, something Apple doesn’t include.

Gateway also boasts that, unlike the iMac, its One model has only a single, thick cord protruding from its rear. This is partly due to the standard wireless keyboard and mouse, but mostly it’s due to the fact that, unlike on the iMac, the power supply isn’t built in but is contained in a bulky, heavy module meant to rest on the floor. This power module contains the networking port and a few other ports meant for peripherals you don’t plug in and out often.

The One started up faster than some other Vista machines I tested, but it’s still slow compared with even an older, 20-inch iMac. It scored very well on Vista’s built-in performance rating, garnering a 4.4. But my high-end iMac, set up to run Vista, scored a 5.0.

The Gateway One may appeal to style-conscious Windows users, but I think the iMac remains the best consumer desktop on the market.

Email me at mossberg@wsj.com. Find all my columns and videos online free at the new All Things Digital web site, http://walt.allthingsd.com.

The slender Motorola Q, despite software that is markedly inferior to that of the Treo 700p, is wooing some users because it is much slimmer and now can be had for just $99, versus $299 for the Treo. The Nokia E62 is about the size of the Q and also costs just $99 these days. The tiny BlackBerry Pearl is just $199. And Samsung has introduced the skinny BlackJack for $199, too.

So, this month, Palm is striking back with a lighter, thinner, cheaper model of its own, the Treo 680, which is being offered by Cingular Wireless at $199.

Meanwhile, T-Mobile has introduced a new slim, light competitor called the Dash. It has built-in Wi-Fi wireless networking to supplement the slower cellphone data network. And it costs just $149.

I’ve been testing the new Treo and the Dash. Both are OK, but neither is as good as it could be. The new Treo still has great software, but it makes some compromises and still fails to match the new competitors in slimness, lightness or price. The Dash has very nice hardware, but is hampered by lousy software.

The Treo 680 is shorter than the Treo 700, because it doesn’t have the 700’s protruding antenna. It’s about 11% thinner and 14% lighter. But it’s still much larger than the new class of Q-type competitors. The Dash is slightly wider than the new Treo and about the same length. But it’s much thinner and lighter. The Dash feels great in your hand because it has rubberized paint.

This new Treo works just like the 700p. It uses the same Palm operating-system software, which is much easier and faster than the Windows Mobile software used by the Dash and the Q. As I have noted in the past, simple operations like deleting an email or displaying your calendar are usually one-click processes on the Palm OS devices, while they often take two or more clicks, or involve opening menus, on the Windows devices.

Also, the Treo 680, like the costlier 700p, comes with better functionality for handling Microsoft Office documents than the Dash does, even though the latter uses Microsoft software. The 680 has the same large, high-resolution screen as the 700p. By contrast, the screen on the Dash, while bright and vivid, is lower resolution.

But the new 680 is less capable than the 700 series Treos. First, it runs on a much slower cellphone network, called EDGE. This EDGE technology isn’t broadband speed, and is only about one-seventh as fast as the networks from Verizon Wireless and Sprint that the Treo 700 uses. Cingular does have a new network with speeds comparable to Verizon’s and Sprint’s, but the Treo 680 can’t take advantage of it.

Second, the Treo 680 is a big step backward in terms of its camera. The camera’s resolution is only about a third of a megapixel, while the camera on the Treo 700 — and the Dash — is 1.3 megapixels. Finally, the stylus on the Treo 680 is cheap and just plain awful. It actually bends when you use it.

The Dash is also stuck on the slow EDGE network technology because that’s the best data network T-Mobile currently offers. It makes up for it with built-in Wi-Fi, which is much faster than EDGE, and potentially much faster than the Verizon and Sprint cellphone data networks.

In my tests, I was able to use the Dash for email and Web browsing via Wi-Fi in my office, my home and a couple of coffee shops. The Wi-Fi setup and connection process was fairly easy, and T-Mobile has added software to the Dash that guides you through setting up access at Wi-Fi hot spots it operates in airports, Starbucks shops and other locations.

In fact, T-Mobile offers a data plan for $30 a month that includes both cellphone Internet service and access to its Wi-Fi hot spots. This is on top of the cost of a voice plan.

There are some downsides. The Dash doesn’t automatically switch on Wi-Fi. You have to do it manually. And, in my tests, it was much slower using Wi-Fi than a laptop was. For instance, in my home, on my very fast Wi-Fi connection, the Dash got just under one megabit per second, while a Mac laptop inches away got over 14 mbps. On a slower network in my office, the Dash got around half a megabit per second, while a computer inches away got 1.3 mbps.

I also found the keyboard on the Dash to be more cramped and harder to use than the one on the Treo. And the touch strip it uses to control volume didn’t work well.

If you have always wanted a Treo, but couldn’t handle the price tag, the 680 may be for you. Just be prepared for its slower speed and inferior camera. If you yearn for Wi-Fi in a slender smart phone, and can put up with a clumsy software interface, go with the Dash.

• Email me at mossberg@wsj.com.

This year, that tower of babble is higher than ever, as new terms have come into being, and old ones have come to the fore. So, here’s a quick glossary of some of the current techno terms you may encounter when shopping for a computer, television, digital camera or cellphone this holiday season.

Aero: This is the graphical user interface that’s a key part of Microsoft’s new Windows Vista operating system, due out around Jan. 30. If you want to get the full benefit of Vista, make sure any Windows PC you buy this season is capable of running Aero. Many are not.

Antiblur: Also known as antishake or image stabilization, this is a crucial feature of digital cameras today. Because few cameras have optical viewfinders, users tend to hold them at arm’s length to frame the shot on the LCD screen. This increases the likelihood of shaking the camera. An anti-blur feature can correct that. The best antiblur technology is optical. Digital versions are less effective.

Draft N: This is a new, faster, longer-range version of the popular Wi-Fi wireless networking system, and many new Wi-Fi products are built to comply with it. It succeeds the common “G” flavor of Wi-Fi. But, there’s a catch. As the name implies, this technology is based on a draft of the forthcoming new Wi-Fi standard, to be called “N.” And the final standard could be different enough to make Draft N gear outdated in 12 to 18 months.

Dual Boot: A computer that is configured to boot, or to start up, in two different operating systems, depending on which the user chooses at any one time. The most important example of this currently is on Apple’s Macintosh computers, which now can be set up to run either the Mac operating system or Microsoft Windows using Apple’s free dual-boot software, called Boot Camp.

Dual Core: A type of microprocessor — the brain that runs a computer — which packs the equivalent of two processors into a single chip. The best known dual-core processors in consumer computers are Intel’s Core 2 Duo and Core Duo, but rival AMD also makes them. They are a good bet for most people.

Flash Player: A small-capacity digital music player, like Apple’s iPod Nano and Shuffle. These players use flash memory, a type of memory chip that behaves like a small hard disk to store music, photos and videos. Larger players, such as the full-size iPod and the new Microsoft Zune, use actual hard disks, like the ones in computers. Flash memory is also what’s inside the small memory cards used in digital cameras.

HDMI: This acronym, for High-Definition Multimedia Interface, describes a new kind of cable for hooking high-definition TVs to things like cable boxes and DVD players. It provides a high-quality digital feed, and combines both audio and video signals via a single connection. When shopping for an HDTV, make sure it has HDMI connectors on the back.

HSDPA: An awkward name for a new high-speed cellphone network being deployed in the U.S. by Cingular Wireless. Its full name is High Speed Downlink Packet Access, and it’s intended to compete with successful high-speed networks from Verizon and Sprint called EVDO, or Evolution Data Only. All of these new networks allow Internet access at about the speed of a slow home DSL line, which is a big boost for cellphones. If you care about email and Internet access on a phone, and you are using Cingular, get a phone that can handle HSDPA.

Quad Band: A cellphone that handles all four bands, or frequencies, used in various countries by wireless phone companies adhering to a world-wide standard called GSM. Examples are Cingular and T-Mobile in the U.S., and Vodafone and Orange in Europe. A quad-band phone can be used on any GSM network anywhere, so if you travel overseas a lot, you may want one.

RAW: A file format for digital photographs that is uncompressed and largely unmodified by the camera’s chips, and therefore includes every detail of the color and image. It is prized by professional photographers and serious amateurs, who look for cameras and photo software that can handle the RAW format. But it produces enormous files, so most users should ignore it and stick with the very good, very common compressed photo format, called JPEG or JPG.

Shared Memory: A computer configuration in which the video circuitry lacks its own dedicated memory and must share, or drain off, a portion of the computer’s main memory. This is common in lower-price computers. It’s fine, but it reduces the amount of memory available to the nonvideo functions of the computer, so you may want to add extra memory to a PC of this type.

WAN: Any wide-area network, such as a cellphone network, that can be used to send and receive data. It is distinguished from a LAN, or local area network, such as the wired and wireless networks deployed inside a business or home. Some computer makers use the term for the built-in cellphone modems in their laptops.

Good luck with your gift shopping. Don’t get trapped in the tower of babble.

Email me at mossberg@wsj.com.

The closest contenders are the smart phones, like Palm’s Treo models. But these devices are generally poor at one of the most important tasks people do on their computers — browsing the Internet. Because their screens are so small, they either render Web pages in a manner never intended by their designers, or they require a ton of tedious horizontal scrolling to view the page.

Now, Nokia, the big phone maker, has come out with a $360 pocket computer that aims to solve that problem. It’s called the Nokia 770 Internet Tablet and, true to its name, it concentrates on surfing the Web. The 770 can also send and receive email and instant messages, view images and videos, and play music and simple games. But its focus is on displaying Web sites really well.

The 770 has been popular in Europe, at least among techies, but has had little impact so far in the U.S., where it is available only via Nokia’s Web site (nokiausa.com/770) and a few other online outlets, such as Amazon.com.

Since Nokia is a cellphone maker, it’s odd that the 770 has no cellphone radio inside and can’t connect to the Internet via the latest cellphone networks, which now boast broadband speeds. Instead, it relies on Wi-Fi wireless networking, which is faster but much less ubiquitous than cellphone networks. It’s possible to connect a cellphone to the 770 and indirectly use a cellphone network, but as with all such setups, this is a clumsy approach.

I have been testing the 770, and I found that it performs its main function, Web browsing, better than any other pocket device I’ve tried. But it falls down badly on many other tasks, partly because of kludgy software and partly because it is agonizingly slow at almost everything other than surfing the Web.

The best thing about the Nokia 770 is the hardware design. It’s a sleek, thin, horizontally oriented device with a handsome black-matte finish and a small number of silver-colored buttons. It weighs just 8.1 ounces, and is only 5.5 inches long and 0.7 inch thick.

Most of the surface is occupied by the very vivid, bright display, which boasts by far the highest resolution I have seen on a hand-held digital device — 800×480, enough to display photos and videos really well and to view many Web pages without scrolling. This is a higher resolution than many Windows PCs commonly used 10 years ago.

By contrast, the screen on the Sony PSP portable game player, generally hailed as excellent, has a resolution of just 480×272, although it’s roughly the same size as the screen on the Nokia. And the screen on the Treo 700p, which has the best resolution of any smart phone display, is just 320×320.

Text looks very sharp on the 770, but it can be too small to read easily. To help with that, Nokia has placed buttons on the top edge of the device that can quickly zoom the display in and out, and put the device into full-screen mode, banishing all menus and icons temporarily.

Unfortunately, this beautiful exterior hardware is served poorly by the software, and by the processor and memory beneath the covers, which are easily overwhelmed.

Using the 770’s Web browser, I was able to successfully, and fairly quickly, call up a wide variety of sites, and all the ones I tried were rendered just as they would be on a regular computer.

In most cases, even though no horizontal scrolling was needed to read the pages, I often had to use the zoom feature to make out small text. Vertical scrolling using the stylus was easy. You can also skip from link to link on a Web page using the gadget’s five-way navigation control pad.

But the email program was so slow as to be essentially useless. Even simple tasks like selecting and deleting emails take forever. There’s another reason the 770 isn’t a very good email device: Unlike the Treo, the 770 lacks a keyboard; so you have to tap out emails on an onscreen keyboard or use handwriting recognition, which wasn’t great.

The image viewer, and video and music players, worked pretty well with pictures, song files and video clips I copied to the 770’s storage card from my Macintosh via an included USB cable. But I couldn’t figure out how to do some simple things, like rotating a photo.

The user interface is confusing. The same icon is used for both the Web browser and for turning on the Wi-Fi connection. The email program is buried in the Contact menu and the picture viewer is buried in a Utilities menu.

There are many more software oddities. The 770 also uses an unusual, hard-to-find type of memory card for data storage — a “reduced-size” Multimedia card.

If you are a gadget geek, or just want to surf the Web on a small device with a great screen, the 770 might be for you. But for most mainstream users, the 770 is a disappointment. With more horsepower and a revamped interface, it might get closer to the holy grail.

• Email me at mossberg@wsj.com.

Apple and Sony are the usual suspects. Microsoft and Intel, which dominate the industry, rarely make the list of design risk-takers. So the latter two leaders deserve credit for cooking up a whole new type of Windows computer — a machine that’s smaller than the smallest mainstream laptop — the Ultra Mobile PC, or UMPC. The first UMPC for the U.S. market, the Samsung Q1, goes on sale next week at Best Buy’s Web site.

The idea behind the UMPC is that it’s so small, yet so full-featured, it can replace a laptop. It’s meant to fit in places a laptop won’t, or simply to be held in your hands. It is also supposed to be a cool multimedia device for watching video or listening to music.

Unfortunately, the Samsung Q1 is so deeply flawed in key respects that it amounts to little more than a toy for techies. For everyone else, it’s impractical and frustrating. Unless the UMPC can evolve significantly beyond this first effort, it may wind up as a footnote in the history of personal computers, rather than an exciting new category.

The Q1 is sleek and attractive. It’s about the size of a hardcover book, only narrower, and is clad in shiny black plastic with silver accents. Most of the unit is occupied by a wide-angle color touch screen that measures 7 inches diagonally. Overall, it’s about 9 inches long, 5.5 inches wide and just under an inch thick. It weighs a scant 1.7 pounds.

Inside, the little machine runs a full version of the Tablet edition of Windows XP. In fact, the UMPC, which Microsoft had code-named Origami, is really just a small Tablet PC. That’s a good thing, because many of the Tablets shipped so far have been too big and bulky to use comfortably as electronic notepads or document readers, which are the main functions of tablet computers.

The Q1 uses a slow, low-end Intel processor, a Celeron running at 900 megahertz. But it was adequate for the common tasks I tested — Web surfing, email, playback of audio and video files. There’s also a 40 gigabyte hard disk, 512 megabytes of memory, Wi-Fi and Bluetooth wireless networking, an Ethernet port, two USB ports and a slot for Compact Flash memory cards.

There’s no embedded cellphone modem and no slot for adding an external one. The Q1 also lacks an internal DVD drive. An external drive can be added for $219, but it’s an extra piece to carry and plug in.

You operate the Q1 like a PDA — by manipulating icons on the screen and writing on the screen using either a simple plastic stylus or your fingers. It lacks a built-in keyboard and doesn’t come with a mouse.

In my tests, the Wi-Fi and wired networking worked well and were fast. All the applications I tried launched fine and worked fine. Video clips looked pretty good on the screen, and the stereo speakers, though small, did a decent job.

So what are the Q1’s big flaws? The first is price. Microsoft’s designers set a target retail price of $500, but Samsung is charging more than double that amount — $1,099. That’s more than many laptops cost, and much more than PDAs or smart phones. In fairness, the lightest laptops tend to cost more — $1,500 to $2,500. But $1,099 is still a lot for a UMPC.

The second is battery life. In my harsh battery test, the Q1 lasted just two hours and two minutes. That means that, in normal use, it might approach three hours, if you’re lucky. You can buy a larger battery for $119, but it adds bulk to the computer and nudges the weight up to two pounds, almost as heavy as the lightest standard laptops.

The third is the lack of a keyboard. Without a keyboard, many standard tasks in Windows are simply a huge hassle. You can’t really do word processing at speeds most people are used to. And email is a constant frustration. Yes, the Q1 has handwriting recognition, but it’s cumbersome. And there’s a semicircular onscreen keyboard, but it takes work to use it well.

Most Tablet PCs include a keyboard. Even the tiny OQO computer has a keyboard, as do Treos and BlackBerrys. How come the combined brains at Microsoft, Intel and Samsung couldn’t build one into the Q1? You can plug in an external keyboard, but that makes the machine ungainly.

The fourth big flaw is the screen. Its resolution is too low to see much material at a glance. Often, you can’t even see the OK button at the bottom of open Windows. There is a way to increase the resolution, but it results in distorted graphics and fuzzy text.

Finally, the navigation buttons and controls on the Q1 are awful. There’s a control that moves the cursor, and another that acts like a Return key. But there are no direct equivalents of the left and right mouse buttons. To emulate a mouse button, you have to hold down two of the Q1 buttons simultaneously.

My advice is to skip the Q1, and hope that the next generation of the UMPC will be better.

• Email me at mossberg@wsj.com.