radiator too thick?

[Gibbo_GTI]

Is a 56mm thick radiator too much for a 1200rpm 70CFM fan in pull configuration? I'm looking at adding an additional rad now that i'm adding 2 7970's in the CPU loop.

 

[pgi947]

Should be fine, thicker usually means lower fpi which in turn means less powerful fans

 

[Gibbo_GTI]

Should be fine, thicker usually means lower fpi which in turn means less powerful fans

Cheers. Thought I'd double check before ordering new rad.