side panel fan intake or outtake

[bigjimmyauk]

What do you have on g-cards that dump hot air into the case i'm looking at ideas for more efficient cooling etc etc

been also dabling with the idea of sectioning off the top hlf of my case/mobo so it's compartmented so hot air from the gpus is expelled before it gets a chance to hit my NH-D14 cou cooler.

Throw me your ideas

TESTING RESULTS ARE NOW IN PLEASE CHECK OUT POST 12

 

[bigjimmyauk]

i'm on a haf x and have 2x230mm fans as intake and 1x 230 and 1x140 as out-take (positive pressure)

my side panel is intake to blow cool air onto the gpu's @Surveyor why would it being outlet help keep the cards cooler?

 

[bigjimmyauk]

Because it will extract the hot air being dumped by the graphics cards.

An easy one for the OP to test.

Fit the fan one way and monitor GPU temperatures.

Fit the fan the other way and monitor GPU temperatures.

Stick with whichever works best.

I am the op lol,

i'm just about to start re- painting my room so when i've done tonight i'll give some configs a go , i've got 4x spare 230 mm fans i also have a free space on top of my case for another 230mm but i could never decide whether i should have it as intake or out take so i left it off. I believe demci flex who make some of the best after market filters said positive pressure is always better as it stops unwanted dust collecting in the case and also forces hot air out of the case.

 

[bigjimmyauk]

very inter4esting

 

[bigjimmyauk]

RESULTS ARE IN

Msi kombuster 5 minute tests on gpu burn in in mode using 4xAA using manual fan set at 60%. All tests the card was allowed time to settle back to idle temp for 5 minutes.I have higlighted the most interesting results in yellow

Degrees


Ambient temp 28 c (Yes my house is roasting)

side panel fan on full intake (positive pressure)
GPU temp 64
CPU temp 42
GPU Return to idle 38c
CPU Return to idle 40c

side panel fan off (negative pressure)
GPU temp 66
CPU temp 44
GPU Return to idle temp 39
CPU Return to idle temp 40

Side panel fan outake ( negative pressure)
GPU temp 69
CPU temp 42
GPU Return to idle 39
CPU return to idle 40

Side panel fan outake with additional top fan as intake (negative pressure)
GPU temp 69
CPU temp 41
GPU return to idle 39
CPU return to idle 39

Side panel fan outake with additional top fan as outake (extreme negative pressure)
GPU temp 69
CPU temp 45
GPU return to idle 40
CPU return to idle 40

Side panel fan intake with additional top fan as outake (Negative pressure)
GPU temp 64
CPU temp 42
GPU return to idle 39
CPU return to idle 40


Side panel fan intake with additional top fan as intake (extreme positive pressure)
GPU temp 64
CPU temp 42
GPU return to idle 39
CPU return to idle 40


Side panel off completly (equal pressure i presume)
GPU temp 67
CPU temp 43
GPU return to idle 40
CPU return to idle 40


Round-up

Interestingly despite what a lot of people say actually having the side panel fan as outake increased temps by over 7 degrees. What did seem to make sense was the whole idea of heat rising having the lower fans as intakes and upper fans as outakes seem to force the warm air out.

Look over the results yourself if anyone else has time to test this then please share your results.