The fan blades look strange. It looks like they are made for sucking air not pushing it, the curvature is all wrong. ACX v1 vs ACX v2, they look like they are upside down.
VS
Looks to me like the one on the top would be quieter but have less static pressure. The one on the bottom more static pressure, more pinpointed airflow, but probably louder.
Basically the one on bottom cupping the air, the one on top spreading it, but when you spread you lose cooling efficiency and dispel more warm air into the case.
As far as the ASUS goes, as always they are quiet, but idle temps are pretty high. That could be changed with a simple fan profile tweak though.
The way I look at it though, the EVGA is no louder than my 7970, pretty much equal, and the EVGA slightly outperforms the ASUS and is cheaper.
I've looked at all Wizz's benches and can't see any point to the 980. My only reason to get a higher end card would be in hopes to get better performance in extremely resource intense games, and in those you barely get any more frames. And for 4k gaming one 980 still fails to play those games at acceptable frame rates.
My only worry is the 970 after getting swamped with orders will shoot up in price, because I may wait until end of next year to just go ahead and get ALL my new platform parts, which may or may not be based on DDR4 depending on price and latency drops on the RAM, CPUs and MBs for it.
I tend to keep my core parts quite a while, but I'm skeptical whether hex core will be all that useful for gaming anytime soon.