Our room was maintained at 23c throughout testing with air conditioning and we measured performance when at standard clocks and then when increased to 4.2ghz at 1.375 volts.
When then raise the overclock to 4.2ghz and measure the results again.
The Frio with one fan set to low speeds manages to hold the Core i5 760 around 63c under load, even when overclocked, a great set of results for the Thermaltake cooler.