Push-Pull for radiators.

[KaineT]

My Windforce fans for my older GTX980Ti died, so after giving it some thought I got myself an NZXT G12 Mount and a X42 AIO to cool my GPU. I added my Cooler Master 140AP (RGB) on the rad in a push-pull config, since it used to be my rear fan, itoesn't cost me anything. However, I'm thinking of upgrading some of my fans to Noctua iPPC 3000's for my rads like my MasterLiquid 240 which I use for CPU cooling.

Should bother getting extra iPPCs for all my Rads to make them push-pull? All of them are about 30mm Thick Rads. I live in Singapore so ambient temps are it normally pretty hot (30°C+/-), and I do not have air-conditioning. I've seen overall 10-14°C lower temps on my GPU after switching to the AIO, compared to the stock Windforce cooler.

[Skiiwee29]

the cost to benefit for Push/Pull is not worth it IMO. You only see 2-4c on average reduced temps. Just get the IPPCs (they do get loud) and only worry about either push or pull, dont worry about doing both. 

[SolarNova]

The iPPC fans are not quiet, even at the same speed as 'normal' Noctua fans. They are very much made for industrial use, they are very durable, run fast, and have great airflow and pressure but can be loud.

 

 

As for push/pull, it really is only worth it on high fin density rads and thick rads.  As far i know , AIO rads don't benefit much from P/P.

 

[Benjeh]

7 hours ago, KaineT said:

My Windforce fans for my older GTX980Ti died, so after giving it some thought I got myself an NZXT G12 Mount and a X42 AIO to cool my GPU. I added my Cooler Master 140AP (RGB) on the rad in a push-pull config, since it used to be my rear fan, itoesn't cost me anything. However, I'm thinking of upgrading some of my fans to Noctua iPPC 3000's for my rads like my MasterLiquid 240 which I use for CPU cooling.

Should bother getting extra iPPCs for all my Rads to make them push-pull? All of them are about 30mm Thick Rads. I live in Singapore so ambient temps are it normally pretty hot (30°C+/-), and I do not have air-conditioning. I've seen overall 10-14°C lower temps on my GPU after switching to the AIO, compared to the stock Windforce cooler.

Adding fans for push pull will only help lower your noise levels they might help drop a few degrees but it won't be earth shattering.
 

There's only 2 reasons for push pull.

1. lower noise levels
2. high Fins Per Inch density radiators and one fan is struggling to push or pull air through it

Watercooling can't cool below ambient without external help (chiller units, air conditioners lowering ambients)

[Blai5e]

If you live in Singapore, you'll do better to invest in an air-conditioner if you are chasing lower temperatures on your rig. As Benjeh stated, you can't get below ambient without employing exotic solutions.

[KaineT]

Thanks for all the advice folks!

Ok, noise isn't an issue for me since I don't have A/C in a tropical climate, I have big air circulators in my room masking most any case noise. I'll be happy to get ambient temp, atm it's not practical to get A/C because I live in an older apartment and will be moving out in the near future. Thanks for everyone's input!
Conclusion: I won't spend extra to buy Noctuas for the Push/Pull fans, instead I will use any existing fans I have left over to do it, after I upgrade some my rad fans to the Noctua iPPCs.

[KaineT]

If anyone is interested, I finally replaced my x42 Rad fan with Noctua IPPCs (3000 RPM) I'm getting 45°C +/- idle. I have it on the rear as intake and left my CM Masterfan 140AP RGB on the other end... So after some reading and testing, I swapped it out for the NZXT 140Aer AP that came with the x42, idle temps dropped 5°C. Wow... seems the CM fans aren't that good? I got them at the time coz my case and everything else was running on CM. My front intake fans are still triple 140 APs now I'm seriously considering replacing them... Any one have any thoughts?