Cs342 :
I currently have a 240mm radiator mounted at the top of my CM 690 II Advanced. There are 2 Cooler Master 120mm LED fans on top of the rad (I also have 2 Yate Loons lying around - would those be better?). Since hot air rises it would make sense to use the rad fans as exhaust, but since they are on top of the rad and not under it, using them as intake is what I've been doing. Should I use the rad fans as intake or exhaust?
I am using a blackhawk Ultra Rosewill Supertower case with a H100 in the top and I have 4 fans mounted to the h100 in push/pull all blowing OUT of the case...Rule of thumb...NEVER ADD HOT AIR TO THE INSIDE OF THE CASE..."Best Practices"...There was room for a third 120MM fan on top which I added Blowing "IN" thus adding cool air for the two internal fans on the radiator hopefully picking up some of the cool air coming in from the top to aid with movement of cool air at the top of the case. With this config I ended up with 4x140MM front fans as "INTAKE" 1x 140MM fan in back as "EXHAUST", 1x 230MM side fan set as "INTAKE", and 5x 120MM fans on side as well ALL set to "INTAKE". This creates "positive air pressure" INSIDE the case meaning the air is TRYING to get out. By pressurizing the inside of the case...this creates a drop in air pressure at the fans on the outside face creating a suction effect at the outside area of the face of the fans and pulls more air in more efficiently and also allowing the 140MM fan at the back and the FOUR 120MM FANS mounted to the radiator a huge amount of fresh air coming in from all directions to push through the radiator and blowing all the HEAT from the cpu out the top as a natural movement of heated air. The back fan removes as much heat as possible as well so I get massive intake of cold air from front, side, and front of top and I get exhaust from the back "at the top of the case" as well as through the radiator..this provides the absolute best possible cooling config for my rigs...I used this config as well in Antec 1200 only had the radiator mounted at the back instead and used the 230MM fan on top as ONLY EXHAUST...extremely cool temps there as well!
My cpu I7 2700K oc'ed to 5.235GHz never goes over 47C with Intel Burn-In or Prime95, or any other benchmark like AID64 etc benchmarking the cpu to 100% utilization for hours on end and my GPU, the XFX 6970 hits a max of 61C under full load and idles at 38C-41C depending on room temps, with all those fans blowing directly on it from the side panel.
So if I was you...I would add those two yates loon fans to the radiatior like I have mine if possible, yates are high cfm...the more you move air through that radiator, the better it performs...don't know what radiator you are using and if it allows for mounting fans to both sides but can't imagine why not. If it was me...then I would add fans wherever it's possible as intake "EXCEPT" the rear fan as exhaust and insure the top with the radiator is set to "EXHAUST" as well, then set all other fans to intake...your case supports up to a total of (10) fans....use them!
This might be an unusual configuration but I have found that it produces fantastic cooling performance and Performance is what counts in the removal of heat from the case!
Give it a try and see how it works for you... experimentation is how you find out what works best for your rigs configuration anyhow...air movement is king so go for it.
Good luck.
the hose clamps are wrong.
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