Hi, yes - even though I'm not doing any formal benchmarking/thermal testing, I find that the system works with no problems even after sustained activity (scripted installs of development environment, many tools, high CPU and disk utilization for > 2 hours).
I'm using it day to day now with dual 21" HDMI to DVI connections and it works quite well. If I have time I will try it with a pure HDMI connection to a 30 WQXGA (2560x1600) panel.