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Super VCA: Today's Choice BUYER'S GUIDE Super VCA: Today's Choice OVERVIEW The latest in the line of video standards, Super VGA offers sharp, 800 by 600 399 resolution and compatibility with current applications. Here's the critical market and buying information you need for successful mail-order shopping. PERFORMANCE TESTS Fifteen Super VGA monitors are put to the test in five applications-oriented 409 categories, including image quality, ergonomics, and connectors. PRODUCT PROFILES Individual takes on reviewed monitors sum up the pros and cons of each, help­ 420 ing you to make the right buying choice. TEST RESULTS The details of what went into each of the five Performance Tests, along with 440 product scores shown in chart form. FEATURES CHART A comparison chart gives you the vital stats on the 15 monitors we tested, as 45:1. well as other mail!order Super VGA displays. PC SOURCES, D ECEMBER 1990 397 OVERVIEW Super Sharp and Super Colorful With an 800- by 600-pixel resolution, and backing by the VESA standards committee, Super VGA monitors are showing their display strength. BY JOE DEVLIN, JOHN BELL, AND MARC GREENFIELD once at a monitor running in 800 by 600 Super VGA mode and adopting the full VESA Super VGA stan­ you'll be sold. Letters are sharp and clear, and look as if they have dard. But there are already quite a few monitors that will accept this signal. Of been printed on the screen with a press and solid ink. Lines in the the monitors we tested, only the Mag­ angled letters "V," "M," and "W" look like lines-not the steep stairs navox 7CM320, NEC MultiSync 2A, and 1W CasperTM-5156H units can't oper­ of a Mayan temple as they do in VGA or EGA Curving lines of graph­ ate at 72Hz or higher in any resolution. ics are almost perfectly arched. And, you can choose from 262,144 vibrant colors. Yet, these 'three monitors fit another VESA specification, called simply the 800 Super VGA is the latest in a series of video standards for color monitors that by 600 monitor guidelines. These guide­ stretches back to 1981, when the original IBM PC was introduced. The evolution of lines require a scan rate of either 56Hz or 60Hz. these standards has meant increasingly better resolution and more colors on-screen VESA gave its blessings to these other chosen from larger color palettes. (See yet a standard. Each of the video cards scan rates because they were the de facto the sidebar, "Video Standards.") · that run 1,024 by 768 resolution uses its market standards before the official stan­ Super VGA allows you to display as own interface and frequency specifica­ dard was approved, and manufacturers many as 256 colors from a palette of tions. This creates much confusion and did not want to give up the market 262,144. This is the same color spectrum more limited software support than ground they had already gained. that VGA has, but Super VGA monitors SuperVGA All monitors reviewed in this Buyer's provide 57 percent better resolution. The Moreover, these video cards and the Guide conform to at least the 800 by 600 increase in resolution comes from the monitors they work with are expensive. monitor guidelines and most fit the addition of nearly 200,000 pixels on the (See the sidebar, "Price Differences.") VESA standard, since they can adjust screen. More pixels mean sharper edges Even so, most of the Super VGA moni­ automatically to the signals that are being and curves, and a denser image. tors included in this Buyer's Guide run sent. (For a list of mail-order companies There's a dramatic difference between as high as 1,024 by 768 resolution. If offering Super VGA monitors, see the VGA and Super VGA monitor displays. you're sure you want to use this higher Buyer's Guide Index at the back of the Super VGA produces rich, smooth, and video mode now or in the future, you magazine.) solid areas of color that look as if they've should consider buying a multiscanning This ability to accept a range of signal been. sprayed on the display screen. monitor that supports it. frequencies is called multiscanning; VGA-generated colors, on the other automatic adjustments to incoming hand, seem slightly dotty-you can tell The Making of a Standard frequencies is called autoscanning. In they're constructed of thousands of tiny Video standards have always been a one sense, all of these monitors are mul­ pixels. complex business, and Super VGA is no tiscanning-since they run in either In Super VGA, the curves and angles different. There is actually more than VGA or Super VGA modes. But we've re­ of text characters look almost as good as one Super VGA standard, and all of served that term for monitors that are they do on a printed page. In VGA, these come from a consortium of moni­ compatible with CGA, EGA, and/ or jagged edges are apparent. tor manufacturers known as the Video 1,024- by 768-pixel resolutions. A video mode, sometimes referred to Electronics Standards Association The market has moved rapidly to sup­ as Extended VGA, has a better resolu­ (VESA). Last June, the group adopted a port Super VGA, with graphics compa­ tion than Super VGA, with 1,024 pixels standard that established common fre­ nies and video board manufacturers across the screen by 768 pixels down. quency specifications for 800 by 600 busily writing drivers for 800 by 600 res­ (See the sidebar, "Point/Counterpoint: video systems. In broad terms, this stan­ olution. Compatibility is a much simpler The Resolution Debate.") While Extend~ dard calls for a vertical scan rate of 72 issue for monitors, since they are, like ed VGA represents another large jump hertz (Hz). television sets, re<;eiving units. If a mon­ in resolution over Super VGA, it is not Video board manufacturers are now itor can handle the signal frequency PC SOURCES, DECEMBER 1990 399 OVERVIEW VIDEO STANDARDS In the beginning there was MDA and CGA. If you pur­ To compete with IBM's EGA standard, other manufactur­ chased the original IBM PC in 1981, you could pick either ers introduced monitors and video cards that pushed the monitor type and its corresponding video card. resolution of color displays up to 640 by 480. Like its pre­ Although CGA allowed PC users to do graphics, it decessors, this Super EGA mode operates off digital sig­ proved too primitive for complicated drawings. In August, nals, which limits the maximum number of colors possible 1982, the next video standard emerged to alleviate the (since each new color requires more wires in the video problem: the Hercules Graphics Adapter (HGA), the most cable). IBM overcame this limitation with the VGA (Video successful non-IBM video standard to date. While HGA Graphics Array) card, which uses analog signals. produces only monochrome output, it uses a 720- by 348- Although it is an analog rather than a digital device, pixel display in a graphics modEr-On impressive gain VGA supports IBM's earlier standards through emulation. over IBM's standards at the time. However, a monitor that accepts only digital input can't be By the mid-1980s, people wanted even better color mon­ plugged into a VGA card unless it has an alternate input itors. To satisfy these growing demands, IBM introduced the mechanism. Likewise, you can't plug a VGA monitor into Extended Graphics Adapter (EGA) in 1984. This new video an EGA card without a special connector. standard took the monitor world by storm and remained At the same time IBM introduced VGA it also unveiled the primary video standard for the next three years. the 8514/A, its high-end video adapter, and its matching monitor, the 8514. While this The Resolution Lineup video system provides even high­ Listed from highest to lowest resolutions, this chart details the evolution of video standards. er resolution, its components can't be used with those of other IBM Maximum Maximum Maximum Scan Date Resolution On-Screen Color Rate Intro­ display systems; the 8514/As Video Standard (in pixels) Colors Choices (in KHz) duced interlacing technique will cause IBM 8514/A 1,024 by 768 16 or 256 262,144 35.50 '87 noticeable screen flickering if Incompatible with previous IBM video standards because used with incompatible equip­ it uses on interlacing scheme; intended for CAD applications ment. (See the sidebar, "Interlaced Extended VGA 1,024 by 768 16 262,144 3(}50 '87 vs. Non-Interlaced.") Not on IBM video standard, but supports 960 by 720 256 262,144 higher resolution than Super VGA Other manufacturers of video cards and monitors tried to VESA Super VGA 800 by 600 16 or 256 262,144 35.52 '90 Recently adopted as a standard by a consortium of reduce IBM's market share by monitor manufacturers introducing systems with higher IBM VGA 640 by 480 16 262,144 31.5 '87 resolutions than VGA without Built into PS/2 Models 50, 60, 80; available 320 by 200 256 262,144 resorting to the 8514/As interlac- as a board for other computers 720 by 400 16 262,144 ing trick. The resulting 800- by Super EGA 640 by 480 16 64 3(}32 600-pixel systems are known as Anon·IBM standard that outdoes EGA in resolution; 800 by 600 64 35 '84 Super VGA. originally used for desktop publishing Even as 800 by 600 catches on, IBM EGA 640 by 350 16 64 21.8 '84 industry analysts are predicting Producing sharp text and graphics, EGA was the primary the imminent arrival of IBM's next video standard for business graphics until VGA appeared standard, currently known as Hercules Monochrome Adapter 720 by 348 2 17.75 '82 XGA.
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