The internal temperatures reached extremely critical values under our load test. The Geforce leveled off at around 93 °C on the Furmark benchmark whilst the processor cores ranged between 90 and 97 °C under concurrent Prime95 load. The considerable oscillation is explained by continual core throttling to 800 MHz. We also observed thermal throttling in HWInfo32 at times. With only Prime95 active, the cores remained at 81 °C since the entire thermal budget could be exploited. In Battlefield 3, the graphics card leveled out at a moderate temperature of 84 °C while the CPU cores reached 91 °C at 2.1 - 2.2 GHz without throttling. There's not much leeway in terms of thermal budget for both the CPU and GPU, but both processing units handle the available energy budget between them in a safe manner.
Coincidentally, we also reached the limits of the cooling system during out stress test. When simultaneously running Prime95, Furmark and Battlefield 3 over a long period of time, the system crashed completely. Just prior to the crash, we observed more frequent throttling of the CPU.