question with regards to fan placement on radiator

[Levish]

Would having fans stacked on one side, taking 2x (120x120x25) fans be as beneficial as having them in push/pull configuration?

This is assuming they are sealed together airtight giving basically a 120x120x50 fan.

[Complete]

Well.. from what I have read..

There is little to no benefit in having fans on each side, just extra noise.
Also depends on you rad.

[septim]

are you suggesting a rad-fan-fan setup?
if so, then i think no is the answer
why not get a 38mm fan instead...

[Levish]

i don't happen to have enough 38mm fans for all three spots not that mixing and matching would make any sort of difference other than aesthetically