Looks cool. It's what you might call neatly packed!
What was the idle temp on air? I know parts of my 980Ti were topping 55°C at idle when read with an IR thermometer. Too hot for my liking!
Around 40c. TBH mate the 980Ti is tame compared to this. Yesterday with the fan on 50% I hit 86c during a game. Mind you, to be fair that game does put the GPU under 100% load from the very beginning and never lets go, so it actually gets the GPU hotter than an hour of Valley (looped, 76c). Even with a massive overclock my Titan XM never hit 60c, and that was 1450mhz.
It's not even like the rad is tiny. Look at it with the rad cover on it, it's enormous compared to an AIO rad. Now you can understand why I decided to go with a water cooled back plate.
So yeah, temps are bad but acceptable I guess (got no other choice really) and the noise has gone (which is what I wanted to do here..) but I strongly suggest that any one thinking of water cooling a 1080Ti or Titan XP to go with at least a 240 rad just for the GPU. You can bring down temps by about 15c extra by doing that from what I have been reading. Bear in mind though the overclock was pretty major (an extra 240mhz) and the benchmark results matched. Oddly enough benchmarks only hit 70s overclocked. It's that Hellblade man, it just makes your rig cry lol. I just turned off the overclock and it levelled out at 75c (the game). From the moment you load it your GPU usage flies up to 99% and the lowest I saw it was 98%. Just utter madness.