So I finally got the parts to upgrade to an i5. Got a GA-P55-UD3R mobo, Zalman ZM600-HP PSU and 4gig of Corsair ram, plus the cpu.
And guess what? Win7 will not install with the 9600GT. It goes through the main part of setup, but after the first reboot it shows the "Updating Registry Settings", and then the pc just resets. Then shows the "Windows did not start..." screen.
I tried everything - taking a ram stick out, swapping them, disconnecting second HD, clearing cmos. Still didn't help. So I tried installing XP and got a similar issue - almost finishes setup then resets after installing devices.
So I put the old 8400GS back in and installation completed perfectly.
So does this mean the card is rooted?