Does it fit ??

[Soundtripper009]

I'm planning to use a Noctua NH D14 for my  PC and I'm using a CM n600 for the case and Asus z87 A for the board. Would  there be any problem in the clearance of ram or case? 

I will use  2 4GB G skill RipjawsX for my RAM. would it fit ??

[Paralectic]

Yeah it would fit but not with any space left, you could go for some low profile RAM instead.

[BloodWithIce]

If you put them in the 2nd and 4th slot, then yes. 

[GuideMe002]

it would definitely fit, you only need to place your RAM in 2nd and 4th slot , just as BloodWithIce say. 
dont worry about your case because its huge. hahaha

[GuideMe002]

please refer to this compatibility website.
http://www.noctua.at/main.php?show=compatibility_gen&products_id=34&lng=en#LGA1150_MSI
http://www.noctua.at/main.php?show=compatibility_ram_gen&products_id=34&lng=en

[lukeptba]

Go to the Noctua website and it will have technical diagrams labeling lengths and heights of certain parts of the cooler, cross reference these clearances with the height of the ram that should be listed on the website of the ram manufacturer.

Here, I grabbed this one for you.

[lukeptba]

Also, G Skill Ripjaws X ram sticks are 40mm high so it should fit, but int he case that it doesn't, you can always just shift the dimms over a slot or two.