Specifications

Although both the Apple and Dell 20" displays use the same LG.Philips LCD LM201W01 panel, Apple and Dell seem to differ (at least in terms of marketing) on several specifications including response time, contrast ratio and brightness. Granted, Dell and Apple use different backlights that may account for the 50 nit difference. On the other hand, Apple hardware is traditionally listed with slightly conservative specifications. Part of our review process is to evaluate these specifications anyway - and since these are nearly identical displays, it will be very easy for us to verify which model has the more accurate listed specifications.


Click to enlarge.

Apple Cinema Display 20" M9177LL
LCD Panel 20.1" WSXGA+ LCD (Active Matrix)
pixel pitch: 0.258mm
Anti-glare coating
Super IPS Panel
Advertised Scanning Frequency Horizontal: 31-83kHz
Vertical: 56-75Hz
Advertised Response Time 16ms (Typical)
Advertised Viewing Angle 170 / 170 (Horizontal / Vertical)
Advertised Contrast Ratio 400:1 (Typical)
Compatibility 1680 x 1050 (Native)
Advertised Brightness 250 cd/m2
Warranty 1 year parts and labor

Dell UltraSharp 2005FPW
LCD Panel 20.1" WSXGA+ LCD (Active Matrix)
pixel pitch: 0.258mm
Anti-glare coating
Super IPS Panel
Advertised Scanning Frequency Horizontal: 31-83kHz
Vertical: 56-75Hz
Advertised Response Time 12ms (Typical)
Advertised Viewing Angle 176 / 176 (Horizontal / Vertical)
Advertised Contrast Ratio 600:1 (Typical)
Compatibility 1680 x 1050 (Native)
Advertised Brightness 300 cd/m2
Warranty 3 years parts and labor

Oddly, Dell lists their 2005FPW with a typical response time of 12ms while Apple and the panel manufacturer both claim a 16ms response time. Over the last several months, we have seen display manufacturers claim only the rising response time on their product specifications. Given the track record of most manufacturers to inflate contrast ratios using favorable testing techniques, the likelihood that accurate response time measurements are starting to crumble to more aggressive marketing seems high. Of course, anyone who reads our display reviews on a regular basis can probably tell you that "average" (TrTf) response time has very little to actual responsiveness of the display and that other specifications, like color depth and display mode, can be more helpful when purchasing a new monitor.

The M9177LL utilizes very different native resolution than what we have seen in the past. LG.Philips LCD largely pioneered the WSXGA+ signal resolution found on the Cinema display and we saw our first demonstrations of the technology back at the Consumer Electronics Show in January of 2004. Since then, WSXGA+ has gained a bit of popularity in laptops, but not in LCD TVs. Unfortunately with HD signals broadcast at 1280x720 or 1920x1080, all of the XGA+ signals pioneered by LG.Philips require some signal conversions, which result in skewed pixels or skewed signals. While watching WMV9 samples on our Cinema display, we attempted to overcome this by only viewing windowed 720p movies, but unfortunately, a bit of screen real estate is wasted in the process. We can't penalize Apple or Dell for trying, however, and both the 23" and 30" Cinema displays incorporate resolutions large enough to play unaltered 1080p signals.

The strongest aspect of the LG.Philips LCD panel utilized in the Cinema display is ultimately the 8-bit Super IPS display. We have covered some displays in the past that utilize 16ms and 12ms 6-bit TN displays. We have never been in favor of sacrificing color depth for response time, but some insist that the sub 20ms response time is absolutely critical to their usage. We will get more into various usage benchmarks later on.

For those not familiar with LCD display modes and how they work, feel free to check out our LCD FAQ from 18 months ago. To reiterate, the fundamental problem with any LCD is that when the LCD liquid crystals "twist" (or "untwist"), there is ultimately a several millisecond delay. This delay translates into a several millisecond delay on the LCD screen. This is unfortunately complicated by the fact that displays do not simply twist the crystal on or off, but at one of 255 degrees (for 8-bit displays) or 63 degrees (for 6-bit displays). Obviously, two states that are very close to each other take less time than two states further apart from each other, which results in pixels that are not just delayed in a uniform manner, but at several different speeds across the entire panel depending on the hue. This generates motion blur, but is commonly misnamed as ghosting (which is a different problem that we will talk about later).

Super IPS counters motion blur by simply aligning the individual fibers that make up the crystal in a particularly easy alignment, without sacrificing viewing angle. Please refer to the FAQ if you would like to know more about SIPS in particular and how it stacks up against PVA, MVA or TN.

We were very surprised to learn that the Apple Cinema 20" display only comes with a one-year limited warranty, if you do not purchase the display with a PowerBook or PowerMac. Dell displays all come with a three-year limited warranty.

Index If looks could kill
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  • jediknight - Wednesday, April 27, 2005 - link

    Only thing I really don't like about Dell is their dead pixel policy. They will only replace a monitor (so I've been told) if it has 6 dead pixels.

    Personally, ONE dead pixel is too many!
    Reply
  • crimson117 - Wednesday, April 27, 2005 - link

    Dell's brand is called "UltraSharp", not "UltraSync" as the review states. NEC's brand is called MultiSync, maybe that got confused? Reply
  • mlittl3 - Wednesday, April 27, 2005 - link

    Here are the final prices (retail not education of both of these monitors).

    Apple $799
    Dell $486.85

    Apple just today reduced the price of their LCD panels. Also, it should be noted that the Dell LCD is listed as $749 but a 35% discount lowers the price.

    This is a perfect example of how hardware costs the same between PC and Mac but volume shipments allow a distributor to lower the cost considerably.

    Apple is selling a lot less of these than Dell therefore their prices are higher. Both panels still cost about the same before volume shipments are factored in. If the whole world buys Apple, then Apple would sell the LCD for $499 and Dell would increase the price to $749.

    Gotta love capitalism!
    Reply
  • DCstewieG - Wednesday, April 27, 2005 - link

    #17 How did you get that $799 price? I followed the link and the session was expired but then I went back to the store and sure enough...$799. Even with my educational discount it's $899.

    Though even @ $799, my point stands.
    Reply
  • JNo - Wednesday, April 27, 2005 - link

    Superb...

    Agree that other connections (s-vid, composite) should be tested via eg xbox... shame no component...

    Am really tempted to get widescreen now that games are beginning to support it or can be made to support it. More elegant than dual monitor and better for movies/games too. Really impressed that the Dell 'out-functioned' the Apple with similar/better performance too.

    On the Dell 2405 (1920x1200), does anyone know what panel it uses? LG Philips too?
    Also anyone know if
    a) it supports 1:1 pixel scaling?
    b) it can be bought in UK (does not appear on dell uk website) - and how much?
    c) it can also rotate to portrait mode?

    Thks
    Reply
  • smn198 - Wednesday, April 27, 2005 - link

    #21
    12ms typical (Grey to Grey) / 16ms typical (Black to White)
    http://support.dell.com/support/edocs/monitors/200...

    Guess Dell are slightly schizophrenic
    Reply
  • sandys - Wednesday, April 27, 2005 - link

    Quite a few games that don't support widescreen natively can be modified to do so, check out http://www.widescreengamingforum.com/ for details, I have a 2405 and run all my games in widescreen with the correct aspect ratio.

    Cheers
    Reply
  • blwest - Wednesday, April 27, 2005 - link

    Nice article. I bought two of these in Feb and absolutely agree with everything in this article. I do think that WOW supports 16:10 though. I'm not 100% certain until I get home but I've been playing it and nothing is deformed. In soviet russia, the monitor watches you. Reply
  • segagenesis - Wednesday, April 27, 2005 - link

    Impressive display but I personally dont like the fact its 16:10... why not 16:9? Did I miss the memo on how LCDs are manufacturered? Having a Trinitron CRT im still hard pressed to want to move to LCD especially for games. Reply
  • toyota - Wednesday, April 27, 2005 - link

    Dell does NOT claim 12ms response time!! I am looking at their catalog that i got a few weeks ago and it lists 16ms for response time for the 2005FPW!! Reply

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