40mm vs 60mm. Push/Pull vs Push

[FirstMonarch]

Hey. So I'm a new member here, I've read threads before but never posted.

 

I'm looking at building a custom case with a full water-cooling system featuring 2 identical quad 120 rads. The dimensions I've got to work with allow me to use either a 40mm rad with 25mm fans in push/pull OR a 60mm rad with fans in push only (I'm ignoring pull only, most tests show that push is categorically better), with fans at fairly low speeds.

 

My question is this; should I go for the 40mm or 60mm rad setup?

 

Thanks

 

PS. I could alter the design and go for push/pull on a 60mm rad as I assume this will be the ultimate option. Doing so would be a pain in the arse so I'll only do it if the advantages are noticeably better.

 

PPS. The rads will be the EK XE480 in either 40mm or 60mm

[WereCat]

Thicker radiator will be better.