Re: Visual artifacts with new FX 5900XT card, none with Geforce 4?
How long did the 9700 work correctly? (months, days, weeks?)
Test the 5900 somewhere else.
You could be extremely unlucky and have 2 randomly damaged vid cards but looks like a damaged mobo to me... possibly the ti4200 requires less voltage and is unaffected, but your mobo may be frying agp 8x cards. (worst case scenario)
Maybe you should turn off sideband and fw, maybe nothing's wrong and its just a setting that not as it should be.
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