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Will an extra fan make a difference?

CostcoSamples
By CostcoSamples
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I am using a Noctur NH-U12S cooler on my 4790k.  Temps are OK but not great.  Due to RAM clearance, I am forced to install the single 120 mm fan in a pull configuration.  I don't think static pressure fans work optimally in pull.  My options are as follows:

 

1) Don't worry about it - 75 degrees under typical load is OK (up to 100 degrees in PRIME 95).

2) Install a Noctur NF-A12x15 (slim) to push air from the other side.  This would be push-pull.

3) Flip the static pressure fan around to push but pointing the other way (against the rear exhaust fan).  I feel like this would mess up the internal air flow of my case.

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No it won't it will improve it more and do you have the dual tower heatsink?

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9 minutes ago, CostcoSamples said:

~Snipparoni~

 

I wouldn't do #3. Increasing the airflow by using a slim fan wouldn't really do that much.

Of course, I'd recommend upgrading to a higher TDP cooler design (Seen here) such as the following:

U14S, D14, D15, D15S

Though, as you mentioned, you need to be careful of clearances.

 

I don't think ignoring it is the solution, but it shouldn't be of critical concern.

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Static pressure fans work equally work well in pull and I think you will acheive a difference by adding another fan.

AFAIK adding more fans will always bemefit as it will make the heat dissipate faster unless you are already at equillibrium temp.

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Edited by Ezio Auditore

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36 minutes ago, Billy_Mays said:

No it won't it will improve it more and do you have the dual tower heatsink?

No, just the single tower heatsink.  I saw Linus' video where he tested the high speed fan, so I think there are diminishing returns with extra air flow through a heatsink.  If the extra fan could shave off 5 degrees I'd be happy.

i7 4790k @4.7 | GTX 1070 Strix | Z97 Sabertooth | 32GB  DDR3 2400 mhz | Intel 750 SSD | Define R5 | Corsair K70 | Steel Series Rival | XB271, 1440p, IPS, 165hz | 5.1 Surround
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30 minutes ago, Imbellis said:

I wouldn't do #3. Increasing the airflow by using a slim fan wouldn't really do that much.

Of course, I'd recommend upgrading to a higher TDP cooler design (Seen here) such as the following:

U14S, D14, D15, D15S

Though, as you mentioned, you need to be careful of clearances.

 

I don't think ignoring it is the solution, but it shouldn't be of critical concern.

Thanks for the Noctua link, I had not seen that before!  

 

A better cooler would be ideal...  I'll give it some thought.

i7 4790k @4.7 | GTX 1070 Strix | Z97 Sabertooth | 32GB  DDR3 2400 mhz | Intel 750 SSD | Define R5 | Corsair K70 | Steel Series Rival | XB271, 1440p, IPS, 165hz | 5.1 Surround
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7 minutes ago, CostcoSamples said:

No, just the single tower heatsink.  I saw Linus' video where he tested the high speed fan, so I think there are diminishing returns with extra air flow through a heatsink.  If the extra fan could shave off 5 degrees I'd be happy.

Ok it could make a difference 

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1 hour ago, CostcoSamples said:

A better cooler would be ideal...  I'll give it some thought.

You are already getting normal temps. With overclocking and all. What voltages btw?

 

And don't use P95 with Devils Canyon CPU. It just doesn't work with DC and Haswell Intels.

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30 minutes ago, LoGiCalDrm said:

You are already getting normal temps. With overclocking and all. What voltages btw?

 

And don't use P95 with Devils Canyon CPU. It just doesn't work with DC and Haswell Intels.

I upped the voltage a few points and ended up with perfect stability at about 1.243v (iirc) at 4.6GHz.  I think with better cooling I could push to 4.8 or above, but I'm happy with current OC.  I have a late model CPU, likely one of the last ones off the production line, so I would guess there is plenty of OC headroom.

i7 4790k @4.7 | GTX 1070 Strix | Z97 Sabertooth | 32GB  DDR3 2400 mhz | Intel 750 SSD | Define R5 | Corsair K70 | Steel Series Rival | XB271, 1440p, IPS, 165hz | 5.1 Surround
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4 minutes ago, CostcoSamples said:

I upped the voltage a few points and ended up with perfect stability at about 1.243v (iirc) at 4.6GHz.  I think with better cooling I could push to 4.8 or above, but I'm happy with current OC.  I have a late model CPU, likely one of the last ones off the production line, so I would guess there is plenty of OC headroom.

Yeah, that would be good reason to get bigger cooler. As U14S user with dual fans, temp difference isn't that big it would make real difference. I'm getting maybe 3C difference compared to single fan. Also, with my own testing difference between push and pull isn't noticeable. I got more difference in temps when I changed whole coolers oriantion to push towards top of case.

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1 hour ago, LoGiCalDrm said:

Yeah, that would be good reason to get bigger cooler. As U14S user with dual fans, temp difference isn't that big it would make real difference. I'm getting maybe 3C difference compared to single fan. Also, with my own testing difference between push and pull isn't noticeable. I got more difference in temps when I changed whole coolers oriantion to push towards top of case.

That's good to know, thanks!  I think I'll just stick with what I've got for now.

i7 4790k @4.7 | GTX 1070 Strix | Z97 Sabertooth | 32GB  DDR3 2400 mhz | Intel 750 SSD | Define R5 | Corsair K70 | Steel Series Rival | XB271, 1440p, IPS, 165hz | 5.1 Surround
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