Which rear case fan to use?

Associate
Joined
27 Mar 2019
Posts
8
Hi everyone,

I just bought the below setup and have a question I hope you could help with.

Phanteks Eclipse P350X Glass Digital RGB Midi Tower Case - Black
Gigabyte Z390 UD (I'm presuming)
**Build Promo**Intel Core i7-9700K 3.6GHz (Coffee Lake) Socket LGA1151 Processor
Team Group Vulcan T-Force 16GB (2x8GB) DDR4 PC4-24000C16 3000MHz Dual Channel Kit - Grey (TLGD416G30
Gigabyte 256GB M.2 PCIe x2 NVMe SSD/Solid State Drive
Samsung 500GB 860 EVO SSD 2.5" SATA 6Gbps 64 Layer 3D V-NAND Solid State Drive (MZ-76E500B/EU)
GIGABYTE GeForce RTX 2080 GAMING OC 8G
Comes with a 600W PSU but I have a spare Corsair 650W modular supply I could swap it out with.

The watercooling for CPU is the Asetek 670LT cooler - front mounted.
My question is, should I swap the default rear exhaust fan?

I asked OCUK what fan it comes with and they said to ask Phanteks,which I did and the details are below:

Dimension: 120 x 120 x 25 mm
Rated voltage: 12V
Operation voltage: DC6.0V-DC13.2V
Speed: 1300 ± 10%R.P.M.
Max airflow: 50.557CFM
Static pressure: 1.257MM-H20
Acoustics: 23.5dBA
Weight: 109.6g

Assuming the Asetek radiator has Static Pressure fans on (which all radiators should imo)
Would I be better swapping out the default rear fan for a spare Akasa Viper I have which has higher CFM and actually has high SP rating I believe.
The main trade off would probbaly be the noise level by about 6dB at full RPM. Reason for this is that I know Air Flow fans are better with no restrictive covers / filters in the way.
Or would I be better sticking to the stock one provided?

Any feedback is appreciated and I know the ideal solution is to test with both fans and compare temps during stress tests but just wondered opinions.

Thanks
 
Soldato
Joined
1 Jul 2011
Posts
8,640
The radiator fans should be all the fans you need. I build a couple systems a month and it's been several years sense I used any exhaust fans. Good intake fans are all I use. That said, I hate CLCs so don't use them.

You got it, the simple way to figure it out is run some stress tests and see what temps do. Might take 20-30 minutes for temps to peak so don't stop the test too soon. ;)
 
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