I'm not getting artifacts on the screen, but randomly it freezes with black text, almost like a kernel panic but no restart this Mac screen, just random black text top to bottom, and the fans go full blast, forcing me to pull the plug. Only happens when a monitor is connected, since it runs headless most of the time.
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So if I wanted to add a second card to this PCIe G5, can it be one just like the 6600, just in slot two? Are all 4 slots PCIe?