Following on from our stock thermal and acoustic testing, here we re-test the operating temperature of the GPU, but with noise levels normalised to 40dBa. This allows us to measure the efficiency of the overall cooling solution as varying noise levels as a result of more aggressive fan curves are no longer a factor.
For 40dBA noise-normalised thermals, we increased the fan speed to 55%, or 1940rpm. This dropped GPU temperature to 65C, with the hot spot at 78C. The cooler clearly can't compete with the Gigabyte or MSI solutions, which are significantly larger, but compared to the Palit StormX OC, it's still not the most efficient – the StormX OC is barely longer than the x16 PCIe slot, yet its noise-normalised thermals are basically a match for the XLR8.