| Re: which case
Good day!
Ok, here is my report on fan testing.
I tested all the fans in free air i.e. holding them my hand and what i have found out that all 120mm fans behave all the same, there is no bad one i.e. one being noisier than the other and the same holds true for the 140mm fans up top. However, all 120mm fans all making the noise i described in above post, i guess it comes from the mechanism of the fan?!. All the fans come with case are sleeve bearing type.
Now come to m/b headers. I found out that 2/3 headers on the m/b are actually working, the third one is either not supposed to report the rpm or faulty. When i connected the amd default heat sink to case cooling header, it sped up! I checked from speedfan, it was about 900<rpm<1000 and it made incredible amount of noise, it was the lousest fan so i switched back to cpu header and it now is running slower and dont make much noise. System cooling header is the stable. This let me to the conclusion that different header has a fixed value of rpm (or voltage)!
The 2 x 140mm fans at the top panel while shifting alot of air, they do make noise too, i say loud noise and when having both of them running at the same time, it gets pretty noisy. Their rpm is about 1050< rpm<1150.
I compared 2 120mm fans, 1 used header in m/b and 1 used 4 pin molex from psu. Well, the fan used m/b header rpm at 880<rpm<910 and the fan used 4 pin ran even slower! How did i know this? I did what you said lol, put my finger into the blade and i wouldnt' do it again even though i used celetape to cover my finger tip. And i also watched the lighting too, the slower spin blade deflected the light further out while fast spinning blade sort of like going throught the light without carrying it out.
<trivia!>
I was rather amused by all this experiments so i tried to work out the speed of the 120mm fan running at 900 rpm and after few calculations (assuming the radius = 60mm), i got the speed at 5.6ms^-1.
<end of trivia!>
So now, i think i need to get a fan controller and replace 140mm fan at top, just one because running those 2 fans at the same time is a bit excessivel. Maybe try out a 120mm fan from the links you suggested.
Im also seriously considering replace my hard driver! (Possibley m/b and a new cpu (amd 3800x2)atm).
Stripping the top panel was a pain in the a**! |