How close can radiator fans be to a motherboard?

[AdvicePl0x]

Hello,

I have a Cooler Master Storm Stryker ATX full tower case, housing an ASRock Z97 EXTREME6 ATX LGA1150 motherboard, using a Corsair H105 73.0 CFM liquid CPU cooler (with its stock fans replaced with 2 Noctua NF-F12 PWM 55.0 CFM 120mm) in a push configuration exhausting out the top. This pc will be mainly for gaming.

(I'm pretty nooby at this; I think this is a push configuration exhausting out the top - it's what I have set up, anyways)

hot air
------------- case (outside of case ^, inside of case v)
radiator
fan fan

The problem is, the radiator fans won't fit into the recommended spot in the instructions (which uses 8 screws), due to this giant blue thing on the motherboard (I think it's a heat sink - I'm not tech savvy). It does fit if I move it up and over a little (which can only use 6 screws), but the fans and that giant blue mountain of a heat sink on the motherboard are so close (about 2-4mm apart).

Is a 2-4mm separation between radiator fans and a motherboard heat sink detrimental to my pc? Should I try to get a different case or motherboard? Is that space totally fine (no heat or weird electric field issues) and I'm worrying over nothing?

Thanks for any help.

 

[TechyInAZ]

LOL. I have the EXACT same "problem".

I guess I was lucky, my H105 is actually touching that heatsink on my z97-A in a 450D. And it works quiet well actually.

Here's my pc: http://pcpartpicker.com/b/X6jcCJ

[strike]If your motherboard heatsink is too big, then you have two choices:

1. Return it for a h100i or h110.
2. Mount the rad fans on top of the computer case. Will look terrible, but will work.
Or 3. If you can even remove the HDD cages, put the rad in the front of the case.[/strike]

EDIT: Didn't realize you said you can fit it barely. If so then that's fine.

 

[AdvicePl0x]

So the spacing isn't an issue? Thank goodness....

How about that it's being held by 6 screws instead of 8? It seems solid enough, but hearing a yes/no from someone who has successfully built computers would be comforting.