Strange graphics problem

[xelterran]

Does anyone have any clue what may be causing these boxes/lines to appear? (see attached images). It only seems to happen in games. Would it a software issue or a hardware one?

Specs:
dual 2ghz G5
2.5gb ram
radeon 9600
10.4.7 (all software updates installed)

Thanks for any help

 

[CoMpX]

It looks like it could be a video card problem, because I have seen something similar to this in Macs with busted video cards. However, I wouldn't totally rule out the possibility that it could be software-based.

 

[xelterran]

I think you're probably right. I guess on the bright site its a good excuse to upgrade the video card.

I'll run some more tests tomorrow to be certain.