Hi Mascaras. If you still have the GX2 in your system can you check how the clock frequencies of the card is affected by the adjusting of the PCIE bus in the motherboards bios? I am sure you have heard of how the 9600 gets affected by overclocking the pcie bus, can you see how the GX2 scales when this is done? Meaning if you raise your PCIE bus by say 5%, does the core clocks of the GX2 also go up by 5%? 600mhz (GX2 def. clocks) X 1.05 (105mhz PCIE clocks) = 630mhz GPU clocks in the end, according to Rivatuner monitoring as opposed to 600mhz being read by the driver?