7664stefan :
I tried out NH-D15 on my own and was hoping to see better results than with my Prolimatech Genesis. The opposite was the case. NH-D15 was 1 Kelvin warmer under full load. For current K CPUs I would suggest to go for an 240mm AIO if fitting into a well ventilated case.
Yes, there are trade offs.
In return for a 1c. higher temperature, you increased your noise level.
In the case of the test above, from 45 DBa to 61 DBa.
In addition, a normal front intake that is filtered will keep your case cleaner by filtering all intake air.
That is difficult to do with a liquid cooler radiator.
If you mount such a radiator in front, you will be filtered, but at the expense of providing hot air to your motherboard and graphics card.
If you mount the radiator as exhaust, it will draw in unfiltered air from all other openings.
And... what do you gain??? 1c.
Intel processors are very tolerant of heat. They will operate up to 100c before throttling or shutting down to prevent damage.
Not that I advocate running anywhere near that hot.
How hot the 8700K chip gets will be determined by how high the OC is and how well it was binned.
Most will run out of safe vcore(about 1.4v) before running into heat limits.
Or... How about looks?
I can't argue that point, pretty is as pretty does.