Hi sorry for the delay in my answer.

I have a power meter before my psu, and the power draw seems to be 450 ~ 457W. The powersupply is an Fractal Tesla 80+ 650W and it seems to work fine with the miner, with all the added cooling fans, and with added cooling heatsinks over the chips, condensators, and voltage regulators.

I used the following picture to analyze where to add extra cooling

http://cryptomining-blog.com/wp-content/uploads/2014/01/antminer-s1-btc-asic-miner-thermal-1.jpg


Also I rotated the setup of the miner so that the aluminium standard cooling sinks are on the outside with fans blowing into them at full speed (yes the noise is terrible)...