@Bayern777, here are my temperatures during idle and under load (at 4.5GHz OC):
Note: that my CPU and the GPU's are water cooled.
ambient: 23 degrees Celsius
idle: CPU: max 29 degree Celsius GPU: max 27 degree Celsius (all three GPU's +-1 degree variations between them)
load (Prime95): CPU: max 53 degree Celsius GPU (Unigine Heaven): max 41 degree Celsius (all three GPU's +-1 degree variations between them)
Motherboard: overall temp is around 38 degree Celsius (this is the temp on PLX chips)
I don't know much about the RE Black but I hope you find this helpful.
I use this board 70% for work and 30% for gaming (BF4). My system has been 24/7 stable at mild OC (4.5 GHz VCore offset of -0.04). I can't really comment on how it performs under heavy overclocking though. I was also able to OC to 4.7 with VCore offset of +0.005. I use synthetic benchmarks like Unigine and Prime95 in relatively short periods to measure temperatures and voltages. The tools I use to measure stability on my systems are the applications I write or use which are mostly ray tracers like Optix or Octane. I wish someone would make a waterblock for this motherboard though
With the right airflow, specially on the passive PLX heat sink, the motherboard doesn't get hot at all. I use Delta fans in my system and these fans suck the air out of my lungs once they are on
I only use pull config on the top radiator which cools the VRM also.
Overall, with the right components you can build a very stable system around this motherboard. But if extreme overclocking (4.7+ GHz) is what you seek then the black edition would be a better choice (assuming Asus fixes the problems you mentioned). Although wining the silicon lottery is a huge factor in OC stability also.