Originally Posted by tha17
but just look at that case.
Unfortunately the specs listed don't give any information on the case fan CFM.
I think you may be surprised just what difference the shroud may make, up to you if you try it or not.
Looking at the case it seems quite "basic" but I did notice that it has removable/washable filters listed in the spec, have you cleaned these recently?
Is the provision to fit another exhaust fan at the rear?
To cool your video card the fan needs to have cool air to blow over the core/memory, if the case itself is hot inside the your gpu cooler (no matter which one you use) is going to struggle. At this stage I believe replacing the stock cooler probably will not help much, I firmly believe you need to address your case cooling first.
What is the state of your cabling? All nice and tidy to maximise airflow?
With case cooling think wind tunnel, the more air that flows through the cooler it will be.
the °C v dB ratio is something you have to juggle to suit your needs, you'll have to look for a CFM/dB/rpm ratio fan that is good for you.