Although the heatsink on the Asus Dual OC doesn't have heatpipes it still seems to do a reasonable job cooling, but I don't think my figures are as good as some of the temps of the FE cards.
Running Heaven 4 on Ultra/Extreme/x8/1440p using the Asus GPU Tweak in OC mode, GPU at 1890, memory 14000 (stock), temps maxed at 76C fan at 54% after about 10mins
I ran a benchmark with these settings and got a score of 1602 (FPS: 63.6), however that's with the CPU 8700K at stock speeds as I've only just built the machine and haven't started overclocking it yet.
Running Heaven 4 on Ultra/Extreme/x8/1440p using the Asus GPU Tweak in OC mode, GPU at 1890, memory 14000 (stock), temps maxed at 76C fan at 54% after about 10mins
I ran a benchmark with these settings and got a score of 1602 (FPS: 63.6), however that's with the CPU 8700K at stock speeds as I've only just built the machine and haven't started overclocking it yet.