Matt,
The 9800pro requires a 350 watt power supply minimum. I'd bet that the
upgrade of the power supply alone will fix your rebooting problems. But,
you will do well to increase the cooling too ;). I'd look for a 430w power
supply, not just a 400w. Also, make sure the power supply itself has more
than one fan. You should look for one with at least two, if not 3 fans.
Tony Mayer
>pick up the 400w to swap out my 300w and maybe even replace my ribbon cables
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