[SOLVED] Got a spare 3 fans so doing a Push Pull set up on kracken z73 need advice

[Agentlekiller]

Hello,
Firstly I know its not going to have much affect,. I have some spare 120mm case fans from my old PC and thought why not add them to my kracken z73 CPU cooler. So im happy to get any advice however also looking for the below questions to be answered.

1.) i have a liquid cooled GPU run off the opt header can i move this the the pump header? my thinking is i can then run the newly added 3x120mm fans and run them from the opt header so they run the same speed as the CPU AIO on the CPU FAN header.

2.) The case fans I have are case fans and not static pressure fans (spec's below *1) will they have a negative effect on the Kraken z73 (spec's below *2) as the speed is different.

As i say they are just sitting around i can get a fan splitter for £3 and i thought if i has any affect on temp or noise i may as well put them to use?

*1

Dimensions FN120 V2: 120 x 120 x 27 mm FN140 V2: 140 x 140 x 27mm Fan Airflow FN120 V2: 45 CFM FN140 V2: 50 CFM Fan Air Pressure 0.9 mm – H2O Fan Bearing Rifle Bearing Fan Connector 3-Pin Fan Input Power FN120 V2: 1.92W FN140 V2: 2.16W Fan Current FN120 V2: 0.16 A FN140 V2: 0.18 Included Accessories 3 to 4-Pin Molex Adapter x 1 Screw x 4 Fan Life 40,000 hours /4 Years Fan Noise Level 21 dBA Fan Speed FN120 V2: 1200 ± 15% RPM FN140 V2: 1000 ± 15% RPM Fan Rated Voltage 12V DC

*2

Fans	Aer P120 Quantity: 3 Dimension: 120 x 120 x 26mm Speed: 500-2,000 + 300 RPM Air Flow: 1 8 . 2 8 - 7 3 .1 1 C F M Air Pressure: 0 .1 8 - 2 . 9 3 m m - H₂O Noise: 21-36dBA Bearing: Fluid Dynamic Bearing Power Consumption: 12V DC, 0.32A, 3.84W Connector: 4-pin PWM Life: 60,000 hours / 6 Years

 

[Barty1884]

1. Yes, that could work.

2. Static pressure would be ideal, but even non-static optimized fans can work on an AIO.
One thing to note though - A slower fan in the 'pull' aspect could be detrimental and just create turbulence.

In this situation, your 'old' fans are 3pin, no PWM - Molex or DC control. So they won't have the granular control of PWM or the Krakens own fans, nor will you ever get them to run similar enough to the CPU AIOs fans to not be noticeable.

More does not always = better.

I wouldn't use them here, personally - but for a 3quid investment, you could certainly try.