9800 XT residual pixel issues

Hi everyone, I have a Dual 1.8 G5 with 2 gb of RAM and a Viewsonic VX2025 LCD monitor. I recently purchased a system pull 9800 XT card from OWC a couple of days ago and popped it in.
I know this card was an upgrade option for my 1.8 from Apple so I thought there should be no issues with it...not really.
I have been suffering some odd pixel issues...not really pixels but rather sizeable SQUARES all over the screen. Hovering a window or even doing a selection area will remove these 'pixels' but will reappear later on. Not in the same spots mind you. Happens as well when watching DVDs.
Games are the worst. It's almost as if I can see the refresh or 'scan'. I have zapped the PRAM, I have repaired permissions and have even popped the card in and out to make sure the contacts are true.
Please please please...anyone with advice, any advice!
Dual 1.8 G5 Mac OS X (10.4.8) 2gb RAM and a Viewsonic VX2025 monitor

Ok, I'm back and the card is acting up again.
A few days ago, I walked in my computer room and saw my G5 had the gray screen crash. Fan was kicking hard. I did the shutdown and restarted after 15 seconds. My screen was suffering the pixel/quilt issue I had awhile ago.
I ended up raising the overclock of the card from 5% to almost 10% to make the pixels go away. Also, from boot up, It seems there is quite a delay for aticellerator to kick in and the initial screen is riddled with squares. I have to activate the screensaver to 'wash off' of pixels and get a decent desktop.
I have tried reinstalling aticellerator.
I have physically removed and reinstalled the card.
I have downloaded whatever drivers ati had to offer for the 9800xt.
I have even reinstalled my system. I did this thinking maybe with a fresh reinstall and Tiger having a chance to rescan my current setup would be able to install the appropriate drivers...in case there was a conflict somewhere.
Any advice anyone? Thanks!
Dual 1.8 G5 Mac OS X (10.4.8) 2gb RAM / Radeon 9800XT

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Welcome to the HP Forums!
In terms of the video pixel issue, it seems like there might be a hardware failure. You have also done the majority of the troubleshooting. The only other steps I can suggest are here: Display Quality Issues
If you are not satisfied, I would contact HP phone support, or return the product if possible. You can utilize this website to learn how to contact HP appropriately, based on your region: Contact HP Worldwide
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Well it looks like I may have resolved this issue, sort of. John (owner of the tapes) let me borrow his camera for the experiment (Thanks). This is what I did with the theory that if I captured using a sony dcr-vx2000 pixelation would be reduced.
The other night (late), I pulled some hurricane Katrina footage that I had not captured yet and capture it with the canon xl2. on playback of the capture NO PIXELATION was observed at all(I watched it three times). I took the originalvtapes that I worked with last week on the wedding and recaptured on the caon xl2. Resulted in occasional pixelation. I then took the same tape and re captured it from the sony camera. Resulted in NO pixelation when playback observed on a tv and on pc screen.
Conclusion:
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Note: Canon and Sony, please address these issues as a professional courtesy to the rest of your customers. Thank you.

9800 XT residual pixel issues

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