Case-fan in front of GPU-fan. Makes sense or senseless?

[lorbas]

Hey!

I'm thinking about removing a casefan. Due to how my case is built, a fan is placed directly in front of a gpu-fan, both blowing same direction. Since the casefan is actually slower: Does the GPU-fan just speed up the casefan so to say? Does the casefan provide better cooling for the gpu or is cooling even worse this way? Pic attached below.

[gpucoolingmethod]

Hey!

I'm thinking about removing a casfan. Due to how my case is built, a fanist placed directly in front of a gpu-fan, both blowing same direction. Since the casefan is actually slower: Does the GPU-fan just speed up the casefan so to say? Does the casefan provide better cooling for the gpu or is cooling even worse this way? Pic attached below.

Im interested in this but my original thought was to not only combine more different types of pc fans but also a normal fan like the one you use in your room or even a leafblower!

[Reckman]

leave the case fan, it will help airflow, the gpu fan will struggle to draw air from outside

[lorbas]

Why do you think it will struggle? Cause of the perforated metal in front of it? Yout think it significantly blocks the airflow?

[wpgdeez]

Test it out and post the results

[lorbas]

Will do

[gpucoolingmethod]

Will do

make sure nothing changes when you do test apat from what you are trying to find out.

So for example make sure the fan rpm are the same throughout the testing and other things which might change the test result without you knowing bout it.



there are lots of other things which might change the testing results very much so eliminate them.

[lorbas]

Okay, test results! Placing and running those casefans with a, compared to the GPU fans, signifcantly slower RPM in front (as shown in the pic I posted) results in a 4 degrees COOLER gpu. Also it does not affect the RPM of the GPU fan.

So, it's good to have them there. When I removed the casefans, GPU temp was going up 4 degrees.

[gpucoolingmethod]

Okay, test results! Placing and running those casefans with a, compared to the GPU fans, signifcantly slower RPM in front (as shown in the pic I posted) results in a 4 degrees COOLER gpu. Also it does not affect the RPM of the GPU fan.

So, it's good to have them there. When I removed the casefans, GPU temp was going up 4 degrees.

did you read my above post?

what could have made your test results go wrong?                 Also try to test with the case fan blowing air in other direction if you can

[lorbas]

Okay, test results! Placing and running those casefans with a, compared to the GPU fans, signifcantly slower RPM in front (as shown in the pic I posted) results in a 4 degrees COOLER gpu. Also it does not affect the RPM of the GPU fan.

So, it's good to have them there. When I removed the casefans, GPU temp was going up 4 degrees.

did you read my above post?

what could have made your test results go wrong?                 Also try to test with the case fan blowing air in other direction if you can

I read your post prior to testing. Nothing was changed besides the casefans, so exact same conditions. Changing the blowing direction seems useless to me, cause airflow would be blocked.

[gpucoolingmethod]

Okay, test results! Placing and running those casefans with a, compared to the GPU fans, signifcantly slower RPM in front (as shown in the pic I posted) results in a 4 degrees COOLER gpu. Also it does not affect the RPM of the GPU fan.

So, it's good to have them there. When I removed the casefans, GPU temp was going up 4 degrees.

did you read my above post?

what could have made your test results go wrong?                 Also try to test with the case fan blowing air in other direction if you can

I read your post prior to testing. Nothing was changed besides the casefans, so exact same conditions. Changing the blowing direction seems useless to me, cause airflow would be blocked.

Changing the blowing direction seems useless to me, cause airflow would be blocked. Not really because of the pressure differences and more complicated things the results should be very interesting especially at very specific angles (a bit effort needed to find these angles!) and fan configurations.That is exactly why I wrote about this.

Please consider this in testing while trying to find these very specific angle and fan configurations

[gpucoolingmethod]

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[InCoinsITrust]

using that case fan so close to gpu will cause gpu fan fail soon, better put some fan in the end of the gpu, where power cables is connected to gpu, that will leed for better temps.

[gpucoolingmethod]

using that case fan so close to gpu will cause gpu fan fail soon, better put some fan in the end of the gpu, where power cables is connected to gpu, that will leed for better temps.

why exactly will it cause it to fail soon

[sub-80]

If the fans are blowing out of the case remove the fan and find a better place.
If they are blowing into the graphics card and the case fan is slower keep it. If it is alot faster (which is highly unlikely) remove it as it might damage the graphic fan bearings

[gpucoolingmethod]

If the fans are blowing out of the case remove the fan and find a better place.
If they are blowing into the graphics card and the case fan is slower keep it. If it is alot faster (which is highly unlikely) remove it as it might damage the graphic fan bearings

your reasoning int entirely correct. It might be that it is slower due to more force needed to spin because of the air from the extra fan pushing the original fan in the other way than it is spinning.

SO Iorbas needs to do some more testing.

[lorbas]

If the fans are blowing out of the case remove the fan and find a better place.
If they are blowing into the graphics card and the case fan is slower keep it. If it is alot faster (which is highly unlikely) remove it as it might damage the graphic fan bearings

your reasoning int entirely correct. It might be that it is slower due to more force needed to spin because of the air from the extra fan pushing the original fan in the other way than it is spinning.

That's correct. But in my case the casefan is blowing in the gpu's direction, plus it's sgnificantly slower. I've done some testing and figuered out that the casefan, although spinning slower, provides some extra cooling for the gpu.

I assume that InCoinsITrust came to the conclusion, that my casefan is dragging the air out of the case, but it's actually not. Otherwise I don't see a reason for a fan blowing in the gpu's direction would harm the gpu-fans. UNLESS it's spinning faster, which is (sub-80 is right about that) is unlikely.

[gpucoolingmethod]

If the fans are blowing out of the case remove the fan and find a better place.
If they are blowing into the graphics card and the case fan is slower keep it. If it is alot faster (which is highly unlikely) remove it as it might damage the graphic fan bearings

your reasoning int entirely correct. It might be that it is slower due to more force needed to spin because of the air from the extra fan pushing the original fan in the other way than it is spinning.

That's correct. But in my case the casefan is blowing in the gpu's direction, plus it's sgnificantly slower. I've done some testing and figuered out that the casefan, although spinning slower, provides some extra cooling for the gpu.

I assume that InCoinsITrust came to the conclusion, that my casefan is dragging the air out of the case, but it's actually not. Otherwise I don't see a reason for a fan blowing in the gpu's direction would harm the gpu-fans. UNLESS it's spinning faster, which is (sub-80 is right about that) is unlikely.

This.  I ran 12-13 pc's with 23 gpus back when mining for btc was all gpu For about 14 -16 months..   Fans blowing onto gpus fans are fine as long as they don't overwhelm the gpu fan.  

why use an external fan instead of making the gpu fan go 100% or even overclock the fan (YES ITS possible! I Even overclocked my monitor resolution to more than 2K! this is not a joke.!)

it will not wear more quickly but actually less because it will have more CENTRIFUGAL FORCE (lookitup)  so it wont push down on the bearing as much.

UNLESS the bearing is ALREADY WORN then it might wobble more and wear down quicker cuz of that.