Thanks for the great info in this thread. I already wondered why my laptop suddenly dropped in performance while I was playing. Now, what I would like to do is to undervolt the Quadro FX 770m. I successfully undervolted my desktop 8800GT, but the procedure I used there doesn't seem to work for the laptop graphics card. - GPU-Z isn't able to read the BIOS - nvflash isn't able to read the BIOS - I didn't find any BIOS on the net for the 770m Therefore I also cannot edit the BIOS via nibitor or a similar tool, to set new voltages. Therefore my question: Does anybody know a way to read the BIOS of the Dell Quadro FX? Additionally, as this failed, I wanted to work around the downclocking of the GPU by reducing the clockspeed step by step when it reaches critical temperatures (before the "real" hard-coded downclocking occurs), e.g. lower the speed by 50 or 100 MHz. Sadly Rivatuner doesn't allow me to access the extended settings that show up below my driver (it only says "Forceware detected"). I also tried using nTune and the rules there with loading profiles according to temperature and/or CPU load, but that simply didn't work correctly. It always reverted back to my default clocks after some time. So, my second question, has anybody successfully used Rivatuner with the 770m, or made nTune work? And at last, some testings I have done regarding downclocking: Specs: Dell Precision M4400 T9400 @ 2,53GhZ nVidia Quadro FX 770M BIOS Rev A09 BIOS A03: - no notable downclocking of CPU - GPU starts downclocking at 98°C (temp according to GPU-Z) BIOS A09 (the one my laptop shipped with) and BIOS A14: - downclocking of CPU at 92°C - downclocking of GPU at 98°C The CPU "upclocks" (sp?) again when it reaches ~88°C Tests were done with Furmark and simultanously running Orthos tool. I was able to undervolt my CPU via RMClock from 1.250V to 1.000V, which resulted in a drop of maximum CPU temperature from 92° to 74°. Still not what I'm used to from desktop PCs, but a significant reduction.