Just finished installing my koolance vid-nx680 onto my 680. Been running a cpu only loop for a while and I was hoping the rx240 I have could handle the 680 for a few months until I pick up an ex360.
Running the following:
EK 250 Adv > 655 W/Bitspower Top > Koolance VID-NX680 > HF Supreme Ni plated > Rx240 (AP15s in pull)
Went through Heaven 3.0 and as of now I am looking at an idle temp on the gpu of 2-4 degrees above ambient (21-23C) and a load temp of around 35-37C.
CPU is sitting around 22-24 per core, 36-41C load temp.
For everyday gaming I am happy as can be. My cpu only went up a couple degrees with the GPU addition. GPU is loading ~30C lower and I only have the noise of 2 ap-15s, the two 140 fans my case came with which are silent as is my pump and psu.
Only issue was the clearance with my compression fitting on the gpu, had to go inlet/outlet both on the bottom because I didn't have an extender, ordered one and it should be hear monday so I can fix that one tube. My pump is up top until I get my other snake fitting and some more tubing, I don't like the way it looks, but it's alright for now. Tube from res>pump looks kinked in the picture, but it just the way the light hit it.
Also, anyone looking for easy lighting needs to look into the bitfenix alchemy led strips. Things are bright as hell and are much easier to deal with than the nzxt sleeved leds or cathodes. In the picture I have one 15 led strip right above my window, it has a detachable cable which makes it a viable placement and it works out great imo.
Not the best picture but my phone is all I have: