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push pull for evo 212? - Page 2

post #11 of 18
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Quote:
Originally Posted by silvrr View Post

I just run them off two MOBO headers.
Fans are easy to switch IMO so test each setup yourself. I used Open Hardware Monitor which gives a history graph of your temps, let it run 20 min, then switch a fan, if temps go down good. If they go up switch it back. Its really easy to see temp trends over time with the graph output. Just make sure you unplug the fan before you start messing with it, fans like to eat fingers.

just curious how do YOU change fans just flip em over. case fans that is ive done it before like this but is there an easier can they run 'backwards'
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post #12 of 18
Quote:
Originally Posted by Jimbags View Post

just curious how do YOU change fans just flip em over. case fans that is ive done it before like this but is there an easier can they run 'backwards'

I just flip them. I don't believe you can run DC fans backwards.
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post #13 of 18
imo invest in one good pwm fan as a pusher and let the rear exhaust do its job.
Quote:
and also one more thing my rear exhaust fan an antec 120mm tricool i think sits roughly 80mm from where the heatsink would be would this be sufficient to pull the hot air out?

Yes. That air isn't coming out of the heatsink that fast. Plus you have that top fan to catch any excess. Keep the top fan running at low rpm so it doesnt divert too much lateral airflow from the cooler. Just imo.
    
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post #14 of 18
Quote:
Originally Posted by Riou View Post

Push-pull does not really improve temps much on 212 heatsink.

I knew there was a small difference but wondered what it actually was. Ran a small test tonight, folding the whole way through.

Capture-10.jpg

For whatever reason #2 and #5 don't make the same speed when 'full on' in the bios so I used the same header and got the same speeds when in push and pull.
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post #15 of 18
I have an idea I'm going to try tomorrow when I get the cooler. I'm going to have a weaker fan pushing the air in and a stronger fan pulling the air out.
With this being said there will be air not only entering in through the intake fan but the sides of the cooler also to be sucked into the exhaust fan.
Does anyone think that would be a great idea? biggrin.gif
post #16 of 18
Thread Starter 
Quote:
Originally Posted by Tybotikus View Post

I have an idea I'm going to try tomorrow when I get the cooler. I'm going to have a weaker fan pushing the air in and a stronger fan pulling the air out.
With this being said there will be air not only entering in through the intake fan but the sides of the cooler also to be sucked into the exhaust fan.
Does anyone think that would be a great idea? biggrin.gif

so your goona mount it horizontal? i dont know if u can do this with the evo 212.

btw guys i went the single push fan, my rear exhaust is close enough it sucks away any excess heat and as said before the top one gets wat ever is missed. added another 120 mm case fan at the front a;so just for good measure so i have 2x120mm intake in the front of the case, a 120mm intake on the side aimed at the gpu, one 120mm exhaust right ib line with heatsink and big ol 200 mm exhaust on top at low rpm, oh and if also got a hole cut in the bottom of the case where the psu draws fresh air from so it doesnt interfere with airflow to much.

thumb.gif thanks for all your help guys i get 69C max with my i5 running@ 4.555Ghz on prim 95 torture test, which i think is pretty descent i havent even messed with the voltage which is a bonus thumb.gif
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post #17 of 18
Quote:
Originally Posted by Tybotikus View Post

I have an idea I'm going to try tomorrow when I get the cooler. I'm going to have a weaker fan pushing the air in and a stronger fan pulling the air out.
With this being said there will be air not only entering in through the intake fan but the sides of the cooler also to be sucked into the exhaust fan.
Does anyone think that would be a great idea? biggrin.gif

Good in theory but to be honest you would be better off with the sides of the cooler enclosed so the air flows straight through the cooler. I have something done to my Xigmatek I dub a 'tape mod'. Basically it is non-adhesive duct tape slapped onto the sides of the cooler and attached to the fans. So the airflow is direct and doesn't escape out the sides. I notice an average of 2-4c drop with bigger gains on the load end.

Here's what I mean -
450

ps - Stronger pull fan is better than push. It doesn't create a bottleneck as the air will force its way through the push fan.
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post #18 of 18
Quote:
Originally Posted by suicideidiot321 View Post

Heres what you want...
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103069
Thats what the original Hyper 212+ came with, and it works fantastic.
Grab 2 of those in a push/pull and the noise to performance ratio is great
thats what im using right now and i gotta say it works perfectly for my system, and for the 212 series i think its one of the better options biggrin.gif
also yes, just order a PWM splitter from ebay or something, they work great

i put one of these as my rear exhaust, im very happy with such a cheap fan...looks great with red led too...

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=5592460&CatId=802
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