Radiator Performane LL120 v NZXT case fans

[Chazodar]

So im looking at getting the 100i corsair aio. It comes with two LL120 RGB fans however my NZXT H510 (no front glass) would block the RGB However if i swapped them. Would performance change if i put my NZXT Case fans on the radiator instead. Also what stat or specification is a good thing to go off for radiator performance. 

[Hairless Monkey Boy]

Looks like the H510 comes with this fan:

 

https://www.nzxt.com/products/aer-f

 

It looks like this fan is optimized for airflow rather than for pressure. For that reason, it likely will not perform very well as a radiator fan.

[HumdrumPenguin]

12 minutes ago, Chazodar said:

So im looking at getting the 100i corsair aio. It comes with two LL120 RGB fans however my NZXT H510 (no front glass) would block the RGB However if i swapped them. Would performance change if i put my NZXT Case fans on the radiator instead. Also what stat or specification is a good thing to go off for radiator performance. 

There are two types of fans. Good for air flow (low pressure), or with higher static pressure to push the air through obstacles (can be the fins of the radiator for instance). The LL120 fans look more optimized for static pressure, but they do not perform the best if compared to other options. I use LL120/140 on my case and 360 rad without a problem, and it cools just fine a 9900k. My case is very big though, and the air flow inside is better than what you get on the H510.

[Corsair Nick]

LL120's can be installed on radiators, and they will provide proper performance in most situations.  We've used LL120 in a lot of our builds attached to radiators as well as our Vengeance PC's with no thermal issues.  Case airflow can be a bigger contributing factor in poor temps.