Great prices on Noctua CPU coolers. Don't think I need to tell you guys about the reputation that Noctua has for producing high quality and quiet CPU coolers.
I have been umming and ahhing about which one to get. I was looking at the Noctua NH-D15 but noobishly bought G.Skill Ripjaws V 32GB (2x16GB) 3200MHz: https://www.ozbargain.com.au/node/552278 and only afterwards realised that the 42mm clearance for that ram would have been too high for the NH-D15 with its 140mm x2 configuration. Was about to get the NH-U14S but at about $6 more the NH-D14 with 120mm and 140mm fans seemed like a better deal and would definitely clear my ram. For all of those wondering how these coolers perform compared to the NH-D15, there wasn't much in it at only few degrees difference at max CPU performance and idle.
Noctua NH-D14 120mm & 140mm SSO CPU Cooler
Noctua NH-U14S 140mm
Two fans of nhd15 won't be the issue regarding the clearance, you can adjust your fan position to give more clearance. Only concern is the width of your case. The nhd15 is fine for my RGB ram. I ordered my nhd15 and case from the previous deal:
https://www.ozbargain.com.au/node/449229
https://www.ozbargain.com.au/node/419737