är vattenkyllning värt det?

@spinymartin: The advantage of water cooling, and in particular if you do it on both the GPU and CPU, is that you isolate an enormous amount of heat to the water itself. By using water cooling you significantly reduce the amount of heat dissipation into the internal air of the case, effectively reducing case ambient temperatures by sometimes a tremendous amount.

In other words, you consequently reduce how much the graphics card will heat up the CPU, and vice versa. It may not be evident at first glance but when both the GPU and CPU are air cooled (and even if the CPU is liquid cooled with an All-in-One solution or custom loop), the graphics card will transfer much of its heat to the radiator if the GPU has an aftermarket cooler that is not a blower style. In particular if the radiator is mounted in the rear or the top. This can, of course, be mitigated by installing the CPU radiator in the front or bottom.

However, putting both the CPU and GPU under water will reduce temperatures even more. You could rate the efficiency of water cooling in this order with 1) generally being the most efficient, granted that you have sufficient air flow and radiator dissipation:

1. Water cooled CPU and GPU.

2. Water cooled GPU and air cooled CPU. (An air cooled CPU dumps less heat into the case than an air cooled GPU)

3. Water cooled CPU and air cooled GPU. (Performance can be increased by mounting the radiator where the fresh cold air enters the case)

4. Air cooled CPU and air cooled GPU.

So yes, the advantage of water cooling can be a hit or miss depending on how you do it. One often forgotten advantage of water cooling is that you can install the radiator wherever you want provided that the tubing is long enough. This is something you cannot do with air cooling because the heatsinks are stuck where they are. With water you could, let's say, install the CPU radiator in the front and the GPU radiator in the bottom or vice versa for generally highest cooling performance... or wherever your fresh cold air enters the case. And you don't need a custom loop to do that. Using separate AIOs will also allow this kind of mounting solution.