For all temperature testing the cards were used in an open test bed environment. Ambient temperature was kept at a constant 20°C (+/- 0.5°C) and if the ambient room temperatures rose above 21°C or dropped below 19°C at any time, all benchmarking was stopped until proper temperatures could normalized.
For Idle tests, we let the system idle at the Windows 7 desktop for 25 minutes and recorded the peak temperature.
For Load tests, we ran Unigine’s Valley benchmark for 20 minutes.
When you combine a rather cool running core with a massive custom heatsink the results are almost a foregone conclusion. So much so that even a massive factory overclock can not overcome this combination!