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PC to LCD Max Resolution? ATI Card Doesn't Do The Trick?



 
 
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Old January 10th 06, 06:16 AM posted to alt.tv.tech.hdtv
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Default PC to LCD Max Resolution? ATI Card Doesn't Do The Trick?

lid wrote:
Two problems--two misunderstandings?

I just bought a Sceptre 37" LCD HDTV. Its native resolution is 1080p and,
with a VGA input its PC VGA max resolution is 1920 x 1080 @ 60 Hz. On the
PC end I'm running a Sapphire (big mistake??) Radeon X800GTO 256 card.

1. Although the card will put out 1600 x 1200 and the Sceptre will agree
and display a nice 37" Desktop the Sceptre will not display 1920 x 1080.
Instead it reverts to 1280 x 1024. It will do 1280 x 720 (of course). I
tried an ATI DVI out to Sceptre HDMI input cable and this made no
difference with Sceptre signal recognition. Does anyone know graphic cards
well enough to explain why the Sapphire X800GTO is not providing the right
(HDTV?) signal for the Sceptre to recognize?

So far all that I have learned from Sceptre and ATI is that the Sapphire
X800GTO may not be designed right to work 1080 resolutions. If that is
true I am prepared to exchange the card to one that "should" and at the
same time raise things a notch. I'm thinking of the ATI Radeon X1800XT
512. On the other hand...

2. When I mentioned to the Sceptre phone tech that the ATI card was driving
a nice 1600 x 1200 ("upscaled"?) Desktop on the Sceptre he told me I should
never do that--that it could be taxing the screen to fail prematurely. IS
THIS TRUE? Should you never exceed the maximum native resolution of a LCD?
If so where does upscaling come into the picture. I thought upscaling past
a native resolution was okay--just not as crystal clear as a native
resolution might be. If this is true then it means I should not play any
PC game in any resolution past 1080?!?

If my PC gaming resolution is really limited to 1080 or under then the
X1800XT would really be overkill--unless I plan upgrading the HDTV yet
again in the near future--no? If you follow all this it is really
important for me to learn and live in the TV's limitations OR be willing to
take the risk that the screen might go dead next month. Any thoughts?

Thanks for the help.

Susan

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Hi,
Over driving can harm the panel. Never saw an over driven CRT monitor
squealing/smoking? Wonder why you are trying to push it towards max.?
If you get nice display with the present card, isn't that enough unless
you're doing some experiment to satisfy your curiosity?
Tony
 




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