No the GPU is not liquid cooled but, it has great air flow through the case and I as far as I know my card has an upgraded fan and heat sink straight from HIS, never runs hotter than 45C. And you are completely right, while my card is no 5 pound ASUS MARS II or 3.5 pound HD 5970, having only the PCI-E slot and two thumb screws holding a 3 pound card completely level seems quite a stretch. My system seems to be running stable enough at the moment with the Aspirin bottle in between the PSU and VGA. I have been running MW3 stable for a day or two without the monitor randomly going grey with lines and then into standby.