DVI vs analogue input

have u used the new HQWL 30.82 drivers??

i think that my video card handles overlay mixing differently when using vga vs dvi. do you only notice that noisy schtuff on overlays? if you open up a screenshot in photoshop or picture viewer or some other GDI app does it look fine?

- cable damaged? - dvi module damaged? -> RMA the card - try another flat panel with that card/another DVI gfx card with your panel

I doubt it can be artifacts.. I tried playing Serious Sam where the graphics are computer generated and not really subject to compression artifacts.. but the problems remain. @horestes: gfx cards with DVI output and flatpanel displays is not really something you have on the double or many of your colleagues have. In fact.. I would know of exactly none who has a DVI output or a flatpanel with DVI input.

how did you set res and refresh rate with dvi ? i had red lightning edge artifacts on overlay pictures, yet no problem on desktop pictures, when i set 1280*1024@75 with my radeon and 17"TFT. but it disappeared @70 or 60.

due these black areas sort of move like stable clouds? does your monitor look like a picture developed from a exposed roll? due the spots just look like a lack of light or the pixels actually black? sounds to me like you might have to send that card back, make sure you connections are clean, or make sure there is no funky magnetic's/field's around your setup. just to play safe i'd send the card back, while your waiting for a new one dig up some more info/feedback, and when you get it back tackle it head on with the brand new card.

I am just guessing here as I don't have any hands-on experience with DVI & flatscreens ... it sounds like your setup somehow suffers from too little colour depth - no idea what might actually cause this particularly on your DVI-out (or DVI-in of your TFT), but I seem to recall that early TFTs did indeed have a limited colour depth ... and no, I don't have any links to prove this idea.

there is no special settings you must use to make it work properly, like in nView or what ever it is, also - are you using any GeForce tweaking programs?

I have a Radeon 8500 LE that I'm using with DVI with my LCD (Samsung 171P) and don't have any problems at all.

Tomshardware did a review a few months ago on the Philips 170B2M (close to the 170B, just newer) and the article mentions bad response times and a "wake" when playing games. Philips website does mention that you should have your video card set to 1280x1024 and be running a driver that they have (redundant info probably). Only other thought I have is try a different DVI cable.