Good call warning about the X1650 pro GDDR2 trend! It started with the AGP's and now the PCI-e version also. Make sure it's a GDDR3 version if you buy a X1650 pro.
I'm trying to determine if this warning is because performance is 10-15% lower, or if it's because the DDR2 cards have some serious problems.
My old system (2.8 prescott with 9600XT) could do windowed games behind a fullscreen video and not choke. New system (c2d 4300 with 1650pro ddr2) starts to play the video, chops, then freezes. Happens often, but not frequently. Tried a 1550pro ddr2 as well, it happens more frequently there. Tried with both official CCC drivers and omega drivers.
Should I keep suspecting the video card is at fault or look towards other devices? Why would everything be fine under the old system?