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#1
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Displayport vs DVI
Hi,
I would like to know which one is the best to connect a 27" LCD monitor, I am considering 2 Asus VE278Q, and I am mostly using Office 2010, Microsoft Flight Simulator 10, and Civilisation V BTW. I am currently using 2 Samsung 24" connected to 2 cross-fired ATI HD6950 -- Thank you in advance Merci a l'avance Martin |
#2
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Displayport vs DVI
Martin Racette wrote:
Hi, I would like to know which one is the best to connect a 27" LCD monitor, I am considering 2 Asus VE278Q, and I am mostly using Office 2010, Microsoft Flight Simulator 10, and Civilisation V BTW. I am currently using 2 Samsung 24" connected to 2 cross-fired ATI HD6950 They're both digital, so should not degrade the image. ******* How did you select that particular Asus ? Will you be buying two of them ? The reviews on Newegg, note a particular failure mode. "screen flashing and going blank issue" http://www.newegg.com/Product/Produc...82E16824236103 The Asus user manual mentions: Display Colors 16.7M (6bit Hi FRC) implying colors are done via temporal dithering. The Newegg reviews don't note any artifacts from that. FRC is explained here a bit. What a "Hi FRC" is, only Asus knows I guess. http://en.wikipedia.org/wiki/Frame_Rate_Control http://www.xbitlabs.com/articles/mon...-guide_11.html Paul |
#3
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Displayport vs DVI
I selected it because that is the only one available that has Displayport on
it, and yes I would be installing 2 of them "Paul" wrote in message ... Martin Racette wrote: Hi, I would like to know which one is the best to connect a 27" LCD monitor, I am considering 2 Asus VE278Q, and I am mostly using Office 2010, Microsoft Flight Simulator 10, and Civilisation V BTW. I am currently using 2 Samsung 24" connected to 2 cross-fired ATI HD6950 They're both digital, so should not degrade the image. ******* How did you select that particular Asus ? Will you be buying two of them ? The reviews on Newegg, note a particular failure mode. "screen flashing and going blank issue" http://www.newegg.com/Product/Produc...82E16824236103 The Asus user manual mentions: Display Colors 16.7M (6bit Hi FRC) implying colors are done via temporal dithering. The Newegg reviews don't note any artifacts from that. FRC is explained here a bit. What a "Hi FRC" is, only Asus knows I guess. http://en.wikipedia.org/wiki/Frame_Rate_Control http://www.xbitlabs.com/articles/mon...-guide_11.html Paul |
#4
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Displayport vs DVI
Martin Racette wrote:
I selected it because that is the only one available that has Displayport on it, and yes I would be installing 2 of them I did find another issue with DisplayPort, but this thread is a bit old now. http://www.avsforum.com/avs-vb/showthread.php?t=1051135 The thing is, DisplayPort does have a content protection option, but it involves a license to the inventor of it, unlike the baseline parts of DisplayPort which don't involve paying royalties. Which raises the question of whether it is included by default or not. On HDMI, HDCP is the content protection mechanism. Windows relies on such schemes, when driving high res monitors. In the more modern OSes, the output to the screen can be modified (reduced effective resolution), if a monitor doesn't have a content protection mechanism. So if I was to use VGA and drive a 1920x1080 VGA equipped monitor, I would logically expect Windows to make my movie playback look crappy. So when you eventually get your new monitor, check to see whether playback under HDMI/HDCP, looks the same as DisplayPort. From a digital perspective, either standard should be able to send bit-perfect images to the screen. But the OS response to the monitor infrastructure, is a separate issue. http://en.wikipedia.org/wiki/Protected_Video_Path http://en.wikipedia.org/wiki/Certifi...ction_Protocol It looks like Content Protection is supported in DisplayPort 1.1 or later, as in: http://en.wikipedia.org/wiki/Displayport 128-bit AES DisplayPort Content Protection (DPCP) support, and support for 40-bit High-bandwidth Digital Content Protection (HDCP) from version 1.1 onwards. but I presume the latter option is when using something like a DisplayPort to HDMI adapter or the like. There is still some wiggle room there, to end up with no content protection. And the latest Windows OSes (Vista and Windows 7), already have tamper proofing in the video driver section, which is bad enough (as there is a danger that tamper proofing can trigger, when no tampering is occurring). What the above means is: 1) When you get your new monitor, do an A:B comparison between the two paths, and see whether there are any deficiencies. I don't know if the color space is handled the same way, and whether there will be differences in what you see in that sense. But if you see a "lack of sharpness" in the image, Windows could be doing that. I also don't know if there is anything in the Windows user interface, to declare a path is protected or not. HTH, Paul |
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