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Switch 810 Airflow question

post #1 of 21
Thread Starter 
So I am going to build my PC in about a month, and I have decided to go for the Switch 810. I have some questions about airflow though, and I'm hoping someone can help.

Here is what I plan on doing. I will have a corsair H110 rad on top in pull config(maybe push pull later on), two front intake fans, three top exhaust fans, and a rear exhaust fan. Things in yellow I have questions about.

fig 1


Should I go for a blower type GPU cooling system or a non stock dual fan system? What will the dual fan system do to my airflow? I don't care about sound, but I will OC at least moderately, and the dual fans are supposed to be cooler.

Do I need a bottom mounted intake fan? Would it help with the above question?

Would it be bad if I set the angled fans to blow from left to right(towards the HDDs)? What would it do to overall airflow? (this option is mainly for aesthetics)



What I figure is if I put the inner fans facing my HDDs, I would need the bottom fan to get air to my GPU, but I don't know. And what if it were a dual fan system? If I understand correctly, those are exhausting fans, so wouldn't they be blowing hot air right at my psu/HDDs? Or do I misunderstand...

Anyway, this is what I want to do, but I don't know if doing this without the bottom intake fan would be a good idea,

fig 2


I assume that this would be the optimum but I still don't know if that bottom fan is necessary.

fig 3


Thanks in advance!
post #2 of 21
Don't do figure 2. the swivel fans blowing against the intake fans is a bad idea. You'll want more intake than exhaust, dust reasons predominantly.
The H110 is a 280mm rad so you will only need two slots filled at the top. I'd take figure 3 but then turn the back exhaust into an intake fan: colder air directly through the rad is thumb.gif (with a dist filter of course).

Option 2 (a little nonstandard but you might want to try it). If you only need 1 of the HDD cages you could put the H110 on the bottom 280mm mount as an intake, the top front fan as an intake, close the top vent of the 810 and only have the top back fan exhausting air. (put in the swivel fan to direct air to your GPU.

Regarding the GPU, I'd suggest getting an aftermarket cooler with 2 or 3 fans (i.e. the windforce 3x) since they are better and quieter than the reference coolers and the setup I suggested will help drive the hot air out of the case.
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post #3 of 21
Thread Starter 
So you suggest something like this?

fig 4


If I did have the third top exhaust fan, with no part of the rad underneath it, would that cause problems for my radiator? And what about the bottom fan? Is it necessary at all? I mean, can you have too much airflow?tongue.gif The reason I would use the bottom fan is that it already has a dust filter. If I used either the top or back for intake, I would just need to grab a $5 one from amazon.


What if I turned the third fan on-top into an intake instead of reversing the rear exhaust? Would that have a similar effect?

fig 5
Edited by Zaxxon - 3/6/13 at 1:00pm
post #4 of 21
I'd stick with figure 4 mate.

It's more about creating an air tunnel as it were. You can have a whole bunch of fans blowing air in different directions and it will just be loud and not cool effectively. Much better to have them complement each other and create a flow over the parts that you need. I hope I am making myself clear. Just visualize where each fan is blowing and try to create a flow in your case that takes cool air from the outside and blows it over the hot components and straight back out again.

You don't really need the top non-rad fan blowing air out, the two on the rad will do that just fine, but I'd cover the open slow with a filter just in case (I really hate dust, but I live in a rather small studio). I like my bottom intake to be honest with you. simply because it creates additional movement from bottom to top taking the hot GPU air away to the top exhaust (in your case the H110).

I think the top intake will mess with the flow which is not really what you want, even if it provides more air. But you can always do figure 4 with the top fan as an intake and compare your temps (and noise levels) to figure 4 with the top fan off. But stick with:

Intakes: Back x1, Front x2, bottom x1.
Exhaust: H110 only.
Swivel: both to direct airflow. (this is a really nice feature of the 810 in my opinion)

If you have the fans and the filters then nothing is stopping you from playing around a little!!! Gives you a nice afternoon pass time for rainy weather thumb.gif
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post #5 of 21
Personally I won't do figure 4 because the hot air that gets dumped out of your case will be sucked back in by the exhaust. I'd still say figure 3 is the best because of the smooth airflow. You can get rid of the third fan at the top, I think it's unnecessary thumb.gif
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post #6 of 21
Quote:
Originally Posted by Nethermir View Post

Personally I won't do figure 4 because the hot air that gets dumped out of your case will be sucked back in by the exhaust. I'd still say figure 3 is the best because of the smooth airflow. You can get rid of the third fan at the top, I think it's unnecessary thumb.gif

Hmmm, this may be correct. I think he just has to try out a few configurations and see what gives him the best temps. Although I still stand by my suggestion/bet because
1) the setup you suggest will have two fans at close quarters pulling in different directions which will disrupt airflow and
2) I don't see how hot air (which rises in addition to already being in motion) will swoop back down around the back of the case and be pulled in unless he has a turbine back there sucking air in like no tomorrow
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post #7 of 21
Thread Starter 
Thats cool, I will definitely have to mess with them all when I get them. I am still a bit unclear about the third top fan though. I realize its not necessary, except to fill the big hole, but will it cause problems? Will it take too much air away from the rad, or will it maybe be balanced by the rear exhaust. It seems to me it could either help cool RAM(looking at the Sabertooth Z77) or cause the radiator to lose too much air. I can't imagine it would loose too much air though, considering the rear exhaust is next to the radiator anyway.

Also, since you have the switch 810, do you think the stock fans will work fine with the h110? They seem to me pretty all purpose, and are very cheap compared to replacement corsairs or other better fans.

Thanks again!
post #8 of 21
Quote:
Originally Posted by Nethermir View Post

Personally I won't do figure 4 because the hot air that gets dumped out of your case will be sucked back in by the exhaust. I'd still say figure 3 is the best because of the smooth airflow. You can get rid of the third fan at the top, I think it's unnecessary thumb.gif

I have to agree with this. I am actually planning on getting this case, hopefully in the next couple days and I think I will be setting mine up like figure 3. I'm still debating on the third top fan, I will probably use 2.
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post #9 of 21
I've had this case for a while now, I ran it with 4 x 140mm intake front/bottom, no exhaust for a while with good tempsand almost zero dust.
The only problem I see with figure 3 is a lack of positive pressure.
I suggest you try with top fans as intake (with added filters) and the rear as exhaust or no rear fan at all, you would still get good airflow and the added benifit of no dust.
The third fan on top as intake could give more cool air over motherboard.
You could also remove the bottom HD cage and add another 140mm.
So in total 7 x 140mm intakes, the rear of the case has many openings (perferations) so air out (exhaust) is not a problem.thumb.gif
Edited by Gunsrunner - 3/6/13 at 2:57pm
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post #10 of 21
Not an airflow expert but #3 is the closest to what I would set up in my Switch 810. It is a nice case, but IMO all the fans that come with it are terrible. It is great that you have so many options for 140mm fans in the case, but I couldn't take the stock fans for a second.
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