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Two internal intake fan or Two front intake fan? - Page 2

post #11 of 23
Thread Starter 
Quote:
Originally Posted by doyll View Post

Interesting results.
Did you check CPU temps on the different fan configerations too?

CPU temp wasn't my concern since during game play its always below 50C, Usually hovers around 42-45C.

I guess the width of my case gave a bit of room for the side GPU air to vent up over the CPU so it doesn't get sucked in. My CPU is even turboboosted to 4.2Ghz

Quote:
Originally Posted by Ergates View Post

This is interesting, as I've been wrestling with a similar problem with my case. I have a different case, a Corsair 600T white SE, and quite a few more fans than you. What I found was that the waste heat from my GPU was getting taken through the CPU cooler system and heating up my CPU by +10C.
Turns out the solution for me was to turn over the top 200mm fan to make it intake instead of exhaust, and to open up the four empty PCI slots below the GPU. This allows lots of waste hot air from around the GPU to exit there, and keeps both the GPU and CPU a whole lot cooler. I've now added a 92mm Noctua fan on those four PCI slots as exhaust, and that's helping to pump out loads of hot air.
)

Your case looks similar to mine on the inside. Interesting how your CPU got +10C while mine stayed relatively cool. I only have 3 Exhaust fans and 2 intake. How is your CPU cooler mounted?
Edited by Sugita2Junko - 12/15/12 at 6:45am
post #12 of 23
Yes, I guess the cases and components are different enough that airflow is affected quite considerably. My temps are whilst folding, with CPU and GPU at 100%, both overclocked.

Here's how my fans around the CPU are set up (or close enough to how they are now):

    
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post #13 of 23
Thread Starter 
Just for fun I ran Prime95 to load my CPU and Furmark to load my GPU, both at the same time for the past 10minutes.

CPU @ 60C
GPU @ 59C
Case @ 35C

During gaming I don't reach this high of temp since most games won't put a load on all my 4cores and furmark stresses the GPU much more than a game would (at least the ones i play)
post #14 of 23
Quote:
Originally Posted by Sugita2Junko View Post

Just for fun I ran Prime95 to load my CPU and Furmark to load my GPU, both at the same time for the past 10minutes.
CPU @ 60C
GPU @ 59C
Case @ 35C
During gaming I don't reach this high of temp since most games won't put a load on all my 4cores and furmark stresses the GPU much more than a game would (at least the ones i play)

I'm not sure you have any cooling worries with those temps, personally. Mine are 10C higher, and I'm still super happy with them. smile.gif
    
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post #15 of 23
Thread Starter 
Not worrying over the temps, happy where they are at. Didn't know what temps you were getting so posted as a comparison.
post #16 of 23
Quote:
Originally Posted by Ergates View Post

Yes, I guess the cases and components are different enough that airflow is affected quite considerably. My temps are whilst folding, with CPU and GPU at 100%, both overclocked.
Here's how my fans around the CPU are set up (or close enough to how they are now):
Pretty sure if you unstack your exhaust fans and only use one your cooling will be better. As they are now the lower part of your D14 is dumping back into the case and not being exhausted.

If you want to be real fancy make a panel from lower side of d14 to back panel.. preferably angled up to rear exhaust fan. I make ducts from cooler exhaust to back vent on all of mine just to be sure all heated CPU air goes out of case and doesn't mix with and therefore raise the case air temp / cooler intake air temp. I have a bunch of extra file folders in my filing cabinet so just use them, tape, glue stick knife, scissors, ruler and pencil. Rattle can of color I want on final duct. Often make a butchered up original cutting and piecing it together until it fits the way I want and then make a second one that looks professional. wink.gif
post #17 of 23
It's not a stacked exhaust fan. It's a single exhaust fan with an empty duct behind it. After your last comment, I actually went back and measured how much of the D14 is exposed - it's less than 15%, most of which is covered by spill-over suction from the fan. Don't forget that a 140mm fan is quite a bit larger in area than the D14.

Virtually no heat is getting out. How do I know this? I tested with a stick and fluff to show the flow. smile.gif
    
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post #18 of 23
Guess I'm wrong. Wouldn't be the first and sure won't be the last.

Was that testing with cooler fans running full speed and case closed? I use a remote sensor thermometer with sensor on cooler intake to see how much heat builds up inside of case when stress testing. Reason it's on cooler intake is because that's the best way of knowing how well the cooler is cooling and also where most of case is is going so good representation of case ambient.
Example:
Room ambient = 21.6c
Case ambient = 23.5c
Cooler exhaust = 28.1c
OHMonitor says CPU = 22-24-23-26-22-24 @ ..4-1-..5-1.8-.8-1% load.
post #19 of 23
I wouldn't say you were wrong, just probably didn't realise how much of the D14 is covered by that rear fan. You can't easily see it from the photo I posted, and you also can't see that it's only a single exhaust fan in that position. Yes, I tested by putting the stick in through various holes with the case closed and fans both on full power and on minimum. Actually that whole CPU/exhaust system is on a fixed speed anyway, the variable speed fans are the two 200mm ones and the 120mm fan in the 5.25" bays.

What I did learn from that testing, and didn't think of before, was that hot air can enter and leave the D14 from the sides of the radiators, since they are open fins. That's top/bottom in the image I posted. It's pretty obvious now. I don't think it's happening to any material degree though.

You were absolutely right on the principle of getting the hot air out the case, and keeping it out and not letting it recirculate through any of the coolers of course. In that previous topic I suspect we were each debating slightly different things, if my understanding was correct. smile.gif
    
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post #20 of 23
We may not always agree but I do enjoy debating things with you. You say what you thank and give good explanations.thumb.gif
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