So whos doing Mugen 2 multi fan configs? Please share your findings

[shaolin95]

Hi!
Just wondering what users using push pull or any other multi fan configuration with the Mugen 2 have to say about their experience.
Regards


PS Pics are welcome

[Oli]

I can only speak for Mugen 1 but that shouldn't differ too much:

I replaced a sinlge 800/1000 rpm fan with two 500 Slipstream fans in push&pull. In all my tests with Ninja and Mugen the result always was: two lower speed fans enable more silence with the same airflow as one powerful fan.

So for people who like a silent pc this is a good solution. Adding a second powerful fan will decrease your temps if you are setting up a system with high TDP but the gain in cooling is only 2-5 degrees with "normal" fan speeds (up to 1200).

I also tried the 38mm (width) fan Ultra Kaze in a 2x 1000 rpm configuration on Mugen which just didn't work out. Although in theory the 38mm fans can generate a higher static pressure than 25mm fans which then should cool better when using heatsinks with very close fins. But my tests didn't underline that - i had my best results always with slipstream fans.

[sumo]

Hello shaolin95,

based on what oli said before, i can say that dual fan (push&pull) installations are better for a optimized airflow through the whole heatsink. Thats the reason why you can use two low rpm fans instead of one high rpm fan. You get sometimes the same power at lower dBa.

Chris
Scythe Eu GmbH

[shaolin95]

I see, I am currently using the stock fan that came with the Mugen2 as pull and the SY1225SL12SH as push in a bottom to top configuration since my HAF932 case has a 230mm on the top.
So basically I got a more powerful fan pushing than the pulling one. I am thinking I dont even need the pulling one but I am going to run several test today and see what I get.
Regards

[regor]

Hi Shaolin95,
For push/pull systems it's always better to use the same fans. Your pulling fan will impair the airflow at high speed and you will probably get even more noise !!! (due to turbulences). So: up to 1200 rpm, you will gain some degrees and dB and above 1200, it should be worse than with the single push @1900...
By the way, even with an extracting 230 mm fan at the roof, anterio-posterior airflow is always better (assuming your vertical 140 extraction fan is performing well). Many reasons explain that: in the vertical design, some hot air coming from the graphic card/chipset will enter your cooler; no real vertical airflow in the case, whereas the horizontal airflow coming from the front fan won't really help. This has almost always been verified, even for highly ventilated cases like yours and even with the lateral 230 fan...
Try and tell us .

[shaolin95]

So you consider that pushing air towards the back 140mm will give better results then?
My reasoning for thinking pushing it up makes more sense is due to two factors.
1st the side 230mm fan is pushing air towards the Scythe fan thus its getting fresh air from the outside.
2nd the huge 230mm and the fact that my power supply mounts on the floor not on the top of my case, means the hot air has a direct patch up and out of the case.

When I place the fan on the right side of the mugen2 pushing air towards the back 140mm fan, the side 230mm fan is below the Scythe fan thus not giving it as much fresh air as when the Scythe is at the bottom of the Mugen2.
Then again there is the other problem that there is not a lot of room between the back of my second GPU and the Scythe to get fresh air when its mounted pushing air up.

Several factors here so I will have to test.
I am just waiting for my new low voltage ram to arrive (1600Mhz 7-7-7-24 @1.65v OCZ) to arrive to start testing.
I called the post office and its on its way home as we speak. :-)

[shaolin95]

So after testing I am now running my fan on the right side and pushing towards the back.
Because I have to video cards, when I place the fan at the bottom of the Mugen2, it barely has any space to breath.
If I remove the card then pushing air up becomes a bit better than side ways but I cant do that so I decided to do a push push instead. One pushing up (the stock fan) and one pushing towards the back fan. That actually worked in my case, better than push pull.
One thing I noticed is that its hard to feel any air coming from the otherside of the mugen2...like the pressure is not strong enough to make it all the way out unlike with my Ninja.
I even tried it a huge Delta 146CFM and got the same result...for that reason I am thinking that a 4 fan config may actually drop the temp a bit more....

[omniscienc3]

Overclock.net - Overclocking.net is worth a cross-posting here.