Replaced Hyper 212 fan, and temps are 10 deg. lower. Is this real?

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Bojangle12

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So I replaced the fan that the Cooler Master Hyper 212 EVO comes with. I used a Thermaltake Blue-Eye LED fan, and ran the same test with it, and the max temp it reached was 10 degrees lower. I used an Intel Burn Test, just opened it and pressed Start. It's on standard, set the times to run to 10.

With other fans it gets hotter. Is this real, or did I do something wrong?

Here is a link to it
http://www.thermaltakeusa.com/ttWWW/Product.aspx?C=1164&ID=1725
 
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Ra_V_en

Ra_V_en

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How did u measured both?
Since its a case fans so to make the comparison valid those test should be done with the same starting environment, same room temperature, both test should be the same, done within the same time (eg 30 mins), measured from cold start.


 
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Bojangle12

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I thought maybe the cooler air from the window caused the lower temperature. This test was done like an hour after i did the previous fan, which was a corsair high performance fan. Other than that, conditions were the same.

Put in the fan, started up the comp, turn on Core Temp and AMD Over Drive, then did the standard test on IBT set to 10 times. AMD Overdrive reported the thermal margin at 20 degrees, whereas with other fans it was 10 degrees.

And Ra_V_en, I'm concerned you dont understand. Yes they are case fans, but I'm attaching them to the Hyper 212 EVO heatsink. Just making sure.

I kinda disagree on the cold start thing though. I had played a game for like an hour with the corsair fan, then put in the blue eye fan and temps were still lower. But one thing thats different about the Blue EYE is that i had to plug it into the power supply, because it didn't have a tiny 4 pin connected, it only had a large 4 pin connector.
 
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Beezy

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what we want to see is Prime95 Blend temps with each fan, then post results. ive been long debating if i should get a new fan for my EVO, but its really quite high CFM and not *too* loud..do you know the CFM and dB specs for the other fan? i thnk evo is 89 +- 10% cfm with 36 dB at full RPM. 18 at lowest rpm
 
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Ra_V_en

Ra_V_en

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Yeah it seems I was miss-leaded with the case fan description on the TT page ;)
In that case it is quite possible, there are fans that work better for radiators and for cases, despite the fact both types are called case fans.
I've seen some tests when swapping the CPU cooler fan for a custom case fan (or lets just call it 120mm fan) and there is actually some major differences despite the CFM and RPM values.
Simply saying the construction of the fan itself is worse or better to blow at radiator fins at very close range.
I cant find that specific test anyhow now... thus again I'm sure it can vary much.
 
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Bojangle12

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I was actually thinking of making this some scientific like write up just for fun, but not sure if I will pull through with it.

If you look at the other fan, you can see it's static air pressure is pretty high. Higher than other fans which are like 2.7 or 3.0.

And why do you want to see Prime 95 blend? Would a 10 minute Prime95 test, with me posting the highest temp be okay? I would love to make a graph, but it's a pain with these HW monitors. Most of them don't have a nice logging feature.
 
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Beezy

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no graphs needed, just run a blend test for 10 minutes with each fan and report the max temps. make sure priority of the worker windows is set to 9, and that no other programs are running during the tests. (as controlled as possible)- and try to avoid one after the other, because test one will cause the motherboard socket to heat up, and test 2 will have flawed results.
 
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Ra_V_en

Ra_V_en

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Just to add more information... dont be fooled with CFM and RPM specifications while considering fan as a swap for the cooler.
All those numbers are measured within an open air situation which is typical when using as a case fan. But in this scenario cooler fins actually make some air pressure resistance to the fan so the air speed before the cooler can drop much compared to the speed measured on the other side. Such information is not provided tho so its rather a blind shot... the numbers can favor one fan but reality will show its something totally opposite.
 
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Bojangle12

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Is it ok if i have monitoring programs on? Well duh, I need them on to record results :p But I wont browse toms hardware like i am now

And right now I'm going off of Over Drive's thermal margin, which is the current temp below the max temp allowed. So a lower margin means its closer to the max temp.
 
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Bojangle12

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Here are some quick results. I put in the stock fan, then a bgBears fan, and tested Prime95 for 10 minutes. I checked on it throughout. The highest temps for those were 52 degrees C, and the temp kind hovered around 50-51 degrees.

I just did the Thermaltake Blue-Eye fan, and the max temp was 48 degrees C, but it really was averaging like 44-45 degrees C. It must have just gone up to 48 as a spike.

And what I noticed from the specifications on the boxes is that out of all of the fans, the Blue Eye has the highest air pressure.It's air pressure is 4.6mmH2O, where as the others have air pressures of like 3.0.

Dunno if I want to put the Corsair one back in. I'm kinda tired right now.
 
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Beezy

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wow...you are making me want to set up a push pull with one of those thermal takes, with the thermaltake pulling, and the hyper pushing still, do you mind testing the thermaltake as a pull? and if you are willing to try 2 fans at once you should test the Hyper 212 stock fan + the thermaltake fan in push/pull config and post results ;)
 
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Bojangle12

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Thank you for helping me to decide how to fill my time :) Naw, i already thought of that on my own, but you reminded me.

I was wondering about this... whats better when using 2 fans, the more powerful fan as push, or the more powerful fan as pull. I was thinking it doesnt matter.

Yuck, I tested out the corsair fan again, and it reach 60 degrees C after 3 minutes. That's the worst one.
 
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Beezy

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i was thinking the same thing, higher CFM should be push, or pull? obviously CFM being equal on both fans is ideal, but if i had to try it i would say higher CFM as pull. lower CFM as push. The other way around makes me think the lower cfm fan will bottleneck the extra being pushed at it, especially since its higher RPM too.

for a quick 4C in temp drops, i might just up and replace my stock fan with that thermaltake

 
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Bojangle12

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Conversely, I think a more powerul fan as pull would just kinda spin air because its not supplied with enough air behind it.

But I'm getting confused with all these ideas. It's time to just test it out :p

Having the Blue-Eye pushing and BgBears pulling did not produce lower temperatures. In fact, the average temperature was higher. Max temp was the same.
 
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Ra_V_en

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Did you read what I've posted before? CFM specification is tested on an open air solution... its like testing vehicle maximum speed without considering its weight and rolling resistance. If you put something on the way the fan is blowing the actual blow power can drop significantly, it's more depended of the fans motor power. Thats why there is no way to assume which one will be better except of actually testing it. And i guess its the case you have atm.
Now if you consider is it better to put fan as blowing or as sucking... the only way to get an answer is test it, but in my opinion there difference will be probably negligible and will vary a bit on the construction of the radiator. Some would prefer more directional air pressure like blowing type is and some more spread so the air blow on wider cooling surface. Its like with aluminum and copper, first one need much wider surface to take out the same amount of heat then the second because of thermal conductivity.
 
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Beezy

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yeah i see that now, i didnt realize, but it makes total sense. I suppose the only real way to know is to take a chance like you did and test the results. Im really considering getting that thermaltake fan now.
 
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Bojangle12

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Don't do it too quickly Beezy... I read that Cooling Fan 2012 roundup sticky, and it seems that Silverstone makes some good fans designed for pushing air through radiators. It could be better than the Thermaltake fan.

I'm going to buy one, and if you want to wait, I can post how it performs.
 
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Beezy

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I will wait, please do follow through with the results!
 
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Bojangle12

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Bought a Noctua NF-F12 120 mm fan, put it onto the Hyper 212 EVO, and ran Prime95 for ten minutes...

Max temp was 57 degrees C, but average temp was around 54 degrees C.

So it wasn't as good as the Thermaltake Blue-Eye. But in the Noctua's defense, I unplugged a case fan and didn't replace it. So there was less intake airflow, which definately has an effect. I can't plug those fans back in because I sold them. Also, the Noctua is whisper quiet. You probably hear that a lot, but it is. I can't even tell if my computer is on or not, because it doesn't make noise. So I would go with the Noctua anyway.
 
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Bojangle12

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I also put in a Cougar Vortex, which did much better than the Noctua. It's max temp was 46 degrees C, and had an average of 44 degrees C.

I think some of these fans weren't meant to be used laying down horizontally. Maybe they're supposed to be used vertically. But still, sorry to say the Noctua got outperformed by the Cougar.
 
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