Water Cooled GTX 980 Ti - ASUS ROG Poseidon or EVGA Hydro Copper

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I am custom building a computer (picking parts and specific internal setup - the actual build is from an "I know a guy who knows a guy" scenario) and it is a given that I am using a GTX 980 Ti with water cooling. Background system information so you can build an image in your head:
Corsair 750D Obsidian Case (Max fans-max airflow - using corsair quiet fans to minimize noise)
-Case airflow is about neutral pressure-exhaust out rear and top, intake from bottom and front; . in the end pressure is pretty much down to a 140 and 80 vs 2 120mm fans
ASUS ROG Maximus VIII HERO MB (Z170 chipset)
Cooling Loop based off of a Swiftech 240X and additional 80mm Black Ice Micro Radiator (Push-Pull on both)
4 GHz Intel 6th Gen i7 Skylake 6700k (plan to overclock to ~4.5, depending on cooling capacity)
Want a quiet build with red/black color scheme

I looked at the EVGA Hybrid for a while but passed it by, and that is how I discovered the Hydro Copper. It has very good custom loop cooling with a pre-installed waterblock engraved with EVGA (apparently manufactured by EKWB). Rather recently however I stumbled upon the ASUS ROG Poseidon version which runs a liquid pipe through the main cooling vapor block which is linked to the main radiator and dual 90 mm fans. The ASUS ROG card is definitely more aesthetically pleasing to me, but it supposedly runs at 49 C with a delta T of 5 C, while the EVGA runs at 42 C. For note, the EVGA version of the GTX 980 Ti is a full $100 more than the ASUS one (though still only a 12.5% price difference, that strains the budget).

Please ask questions if the data I have provided is insufficient.
 
what hydro copper are you looking at? it doesn't come with its own cooling, you will need to supply the custom loop yourself.

the rog poseidon also doesn't come with the water cooler, same boat as the evga.

do you already have a rad and pump setup? besides the swiftech.

for sake of being easy the evga hybrid does very well and most can get 1500mhz out of it without issues. though the asus would likely match the scheme of your asus mainboard. if your just going to do a simple 120mm single fan to cool the gpu then just go with the asus and you would get similar results.

otherwise the hydro copper is meant for a full 240-360 rad setup and at that point there would be no reason to skip the classified and get your own ekwb or xspc block and go for the moon.
 

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The GTX 980 Ti Hydro Copper. I am expanding the Swiftech unit with another rad and using the beneficial AIO Res and pump - contacted Swiftech and the system was designed for this exact sort of expansion so the pump can handle it (though no details on gpm flow). However, the ASUS is more cost efficient and aesthetically pleasing, because of the Black-gold evga color scheme, I am gradually leaning away from it, if it means I must sacrifice some performance, though I still welcome everyone's opinions telling me how much of a moron/how ASUS GPUs are terrible/how no, the pump isnt powerful enough for the other rad/anything else. I still need meaningful data at running temps, as I obviously don't have 2x 480 mm rads like the temp reviewers to, and the temp curve may make it out that with my rads the ASUS is cooler because of the fans-who knows. Experience with either is welcome and appreciated