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Perfect PC PQ right out of the box...anyone?

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Old 02-20-2005, 09:40 PM   #1  
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Default Perfect PC PQ right out of the box...anyone?

Has anyone come across a television and video card that display a perfect picture with no overscan? (Of course, the PC resolutions have to be set)
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Old 02-20-2005, 10:05 PM   #2  
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If the TV has a PC compatable input, then it is possible. I have a 27" Zenith that is "perfect" at 800 x 600. All TV inputs will be set to overscan.
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Old 02-20-2005, 10:14 PM   #3  
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Right, I should have noted...most "typical" televisions. That is, one without a PC dedicated input (only DVI, Component).

However, I see you've answered that question... "All TV inputs will be set to overscan."

I've read a lot of your posts regarding the issue. Now just wondering if any of the latest cards have the DVI>HDMI dialed in to having no overscan, or if it's a simple fact that ALL televisions will experience a degree of overscan, regardless.
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Old 02-20-2005, 10:28 PM   #4  
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The ammount of overscan is not the same on all "typical" TVs, so even if a video card had an overscan mode, it would not work out the same for everybody. You might be able to download a pre-set timing for your TV for PowerStrip, but you may still end up with some under- or over- scan.
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Old 02-21-2005, 07:13 AM   #5  
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Since the overscan is in the TV not the card, there can not be any card made that can have the DVI>HDMI dialed in to having no overscan. The problem is in the TV not the video card as cards do not overscan, TV do.


What some drivers do to get around the TV's problem is to create "a resolution within a resolution" so that the desktop is within a frame that is smaller than the card resolution. Like gollum stated, the amount of overscan, and the position for that matter, is not the same from TV to TV, so the software has to be able to set the size of the desktop window as well as its position. Powerstrip will not do this. Sometimes you are able to increase the vertical and horizontal resolution in powerstrip to and adjust the front and back porches to reduce this somewhat.

There are Catylist drivers for the ATI Radeon cards that will set up the reduced desktops and there is a nvidia driver that will do the same for nvidia cards.

Most CRT based HDTVs will have a problem with any resolutions other than 480i, 480p, 540p or 1080i. Most CRT HDTVs will not accept 720p, although some do and convert it to 540p for display. Most CRTs will flicker at 1080i, so the better answer for a HTPC display is a fixed pixel type display, plasma, LCD, DLP, or D-ILA/LCOS to run at 1280 x 720p or if you got the bucks, 1920 x 1080p.

Bottom line is it seems that the first reaction to the overscan issue is that the problem is in the video card. It is not. The problem is in the TV. The real answer for a superb HTPC setup is:
  1. Get a TV that is PC compatable, or accept a reduced resolution desktop.
  2. Get a video card that will support HDTV resolutions.
  3. Get video card drivers that will support HDTV resolutions and widescreen aspect ratios. Most drivers assume 4:3 monitors.

Last edited by rbinck; 02-21-2005 at 07:15 AM..
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Old 02-21-2005, 10:14 AM   #6  
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Quote:
Originally Posted by rbinck
The real answer for a superb HTPC setup is:
  1. Get a TV that is PC compatable, or accept a reduced resolution desktop.
  2. Get a video card that will support HDTV resolutions.
  3. Get video card drivers that will support HDTV resolutions and widescreen aspect ratios. Most drivers assume 4:3 monitors.
Thanks for the clarification.

Yeah, I'm selecting my television and having a new PC built. Probably going with a Sony XS955 (DVI) and still uncertain about which video card I want (willing to spend for better PQ).

I don't mind not having a perfectly positioned picture. But would like to have all of the screen displayed (as close to a full picture as possible would be nice).
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Old 03-06-2005, 01:58 PM   #7  
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The Samsung DLPs have always had standard 5% overscan in TV mode, but make an underscan mode available for PC use. Latest models have a mode that maps pixels 1:1 and only has 2% overscan. Sammys also have a VGA input.

A progressive scan display, 720p or 1080p, is highly recommended for any HTPC. Burn proof technologies are also. Avoid CRT & Plasmas, seek LCD, DLP, DILA, LCOS.
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Old 03-13-2005, 01:29 PM   #8  
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Burn in is only an issue if you watch your CRT using letterbox or pillar box correct?

I assume this would be true on any standard TV tube such as the ones most of us have been watching for the past 30-40 years and haven't had much of a problem with that?

My wife and I just got back from Best Buy and to be honest the CRT looked the best save the 5000-6000 dollar TV's and even those ones had the picture quality change if you were not at the right viewing angle. Until the technology is advanced(sounds like better stuff is coming out this summer)

For under 2K the CRT is hard to beat
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Old 03-14-2005, 06:58 PM   #9  
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Many formats of letterbox & pillarbox are common... burn in is much worse with CRT based RPTVs than with direct view CRTs. Burn in also occurs with static images like desktops & control panels of games & news ticker scrollies...

CRT is bad for a PC desktop or gameboxes because it is an interlaced display, as well as being burnable.

DLP RPTVs have just dropped below $2000, screen sizes 40+". LCD RPTVs have been there a few months. Either would be a better choice for an HD HTPC because they are progressive scan & burnproof technologies.
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