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View Full Version : What happens to pic quality when you DVI-CRT dongle your video card?


TheGoose
11-16-05, 12:07 AM
I have a good 19in CRT, but need a more powerful video card, ie, 7800GT-1800XT 256, but they're both dual DVI, so what happens when you add the connector?

Smokey
11-16-05, 12:09 AM
No differnce in image quality, there is a difference though if you were using an digital lcd via anolog.

TheGoose
11-16-05, 01:57 AM
No differnce in image quality, there is a difference though if you were using an digital lcd via anolog.

Really, nothing changes, ok, that's good news....thanks.

ricercar
11-16-05, 03:57 AM
Werd. In three years I've never found a DVI-VGA adapter that decreases video quality. The DAC on the GPU determines analog video quality.

jolle
11-16-05, 05:55 AM
nothing is SUPPOSED to happen.
but my secondary monitor is a CRT using the DVI output with a DVI-VGA adapter, and everything casts a red or green shadow, and the colors are a bit off..
I got rid of it somehow, but it came back.. I thought it dissapeared when no TV was connected to the Svideo, but apparantly that isnt the case..

TheGoose
11-16-05, 08:27 AM
Ok, guys I'll look into it, thanks for the feedback:)

Mathesar
11-16-05, 09:26 AM
I just upgraded from a 6800GT to 7800GTX and the supplied DVI>VGA adapter didnt degrade image quality at all on my CRT compared to using straight VGA on the 6800GT.

Gorion
11-16-05, 09:31 AM
I have a crt on my 6800U and it looks great :)

chowells
11-16-05, 10:40 AM
nothing is SUPPOSED to happen.
but my secondary monitor is a CRT using the DVI output with a DVI-VGA adapter, and everything casts a red or green shadow, and the colors are a bit off..


Most likely one of the connections is a bit dodgy.

ricercar
11-16-05, 12:30 PM
a CRT using the DVI output with a DVI-VGA adapter, and everything casts a red or green shadow, and the colors are a bit off.Sounds like you have a loose connection, or perhaps even a bad DAC on that port (either case, a hardware failure). My first 5700 Ultra had a bad DAC. The DVI outputs were good to LCD, but on a CRT the top DVI analog delivered no red or blue, only green.

jolle
11-16-05, 12:32 PM
thing is, it was like this before, then the DVI died, I had the card replaced (took me first a month waiting time, got back the exact same defective card i sent away, then another month waiting time for a new card).
It was fine for a while, then it started happening again.

saturnotaku
11-16-05, 01:48 PM
I've used adapters for both VGA LCD and CRT panels with no loss of image quality on both ATI and NVIDIA cards.

TheGoose
11-16-05, 05:26 PM
Fair enough, by the sounds of all that, I'm good to go.
I know which card I'd like, but it's $1200AUD, LOL.