I thought that adding a second BladeMaster to my Hyper 212 Plus was going to make a difference, but today I installed it and apparently it doesn't at all. My case is a Cooler Master ATCS 840 which is very large with plenty of airflow, including two 230mm fans on top. The rest of the system is:
Motherboard: GIGABYTE GA-890FXA-UD5
CPU: AMD Phenom II 1090T x6 @3.8 Ghz
RAM: GSKILL F3-10666CL9Q-16GBRL 16 GB
PSU: CORSAIR CMPSU-850TX 850W
Video card: HIS Radeon 4850 1GB RAM
Hard drives: 2 Western Digital Caviar Black Edition (1 TB and 1.5 TB), 1 WD Caviar 768 GB
Optical drives: LG GBW-H20L Blu-Ray recorder, Pioneer DVR-217D DVD recorder, both SATA
OS: Windows 7 Home Premium 64 bit
I followed the links in the first post of this thread to buy the second BladeMaster and the Y cable to run both at the same time.
Before I installed the new one, I ran Prime95 for ten minutes using the Maximum Heat setting to compare. It was 48C. After that, I cleaned everything again (I had cleaned everything a few days ago including the Hyper 212 heat sink but I cleaned again just in case) and I installed the second Blademaster, which is identical to the one bundled with the Hyper 212+. I made sure that I installed both with the arrow pointing in the same direction, towards the back of the case, where the other case fan is pulling the air out of the case. Before I closed the case, I verified that both were running fine.
Then I ran Prime95, again on the Max. Heat setting for ten minutes, and I was disappointed to see that the temperature was still 48C (both times according to CoreTemp).
So is there anything else I can do? I mean, other than buying a very noisy fan, which I would prefer to avoid. If I change the direction of the two fans, the hot air being pulled from the Hyper 212+ would blow right on top of the 4 RAM modules, so I'm not so sure that would be a great idea. One thing seems certain though, adding the second fan made absolutely no difference. What are your experiences with two fans? Have you achieved a difference in temperature?