Asus version has:
~Boost in performance, can be overclocked higher.
~Heatpipe design makes it much cooler. (As in less temperature)
~Much quieter fan
~Because of it's previous specs, it can last twice as longer in comparison even when overclocked.
Personally I'd go for Asus version because I can push further and it can last longer. Been playing a few games with it now with ultra settings, I don't hear any sound made by it, it's just so quiet.