Thanks for your post! I also have the Asus Z170I Pro Gaming. Seems like i better don't get the LP53. But this has to be really close if you point the heatpipes towards the RAM?
Sure, you're welcome, I was surprised that nobody tested this combo before (or at least I couldn't find any mentioning of it).
To answer your question - no, it's not close, we are talking about 2 mm or so. Below I'll explain why.
Here it works just fine with
Gigabyte GA-Z97N-WIFI
The Asus does not look that much different (in the direction of the RAM)?
Too bad, has to be very close..
The whole problem with Asus Z170I (and Z270I ?) comes from the VRM heatsinks.
The orientation of the cooler on the quoted Gigabyte mobo is the ideal one:
The bent parts of the heatpipes are facing the RAM slots, while the tips of the heatpipes are facing the mobo IO area.
The cooler itself is not symmetrical, the side where the tips of the heatpipe are located is a few mm longer (because of the tips themselves).
You can't put the LP53 on the Asus Z170I (and Z270I ?) in the orientation pictured above because the tips of the heapipes are hitting the VRM heatsink opposite to the RAM slots. You can rotate the cooler 180' and then the bent part of the heatpipes doesn't conflict with the VRM heatsink, but the heatpipe tips on the other side are conflicting with the nearest RAM DIMM. Rotating it 90' or 270' is conflicting with the other VRM heatsink - either the flat part of it (when the bent parts of the heatpipes are facing it) or the slanted part (when the hp tips are facing it, particularly the right hp tip, the left one is unobstructed).
The reason why the Gigabyte board is OK is that it just doesn't have any VRM heatsinks.
I was thinking of removing one of the heatsinks on the Asus Z170I, but I noticed a warning in the manual that the VRM elements are designed to work only with heatsink, removing it might damage them. I guess one could drill just a bit into the heatsink so that the hp tip could fit, but it's too much trouble I guess. It is to me anyway.