I've been saying it for years, while all those self-enclosed systems are very cool to own (i.e., cheap watercooling is affordable without needing a custom built loop), they look very clean/nice, and they work a lot better for those who want fancy ram with tall heatsinks, are ideal for smaller cases like Lian-Li 354A, when it comes to performance vs. noise levels, they will get outperformed by high-end heatsinks like the Thermalright Archon / SB-E, Thermalright Silver Arrow / SB-E, NH-D14, Phanteks PH-TC14PE.
^ Thermalright uses good TY-140/150 fans that even at
full blast are very quiet. Even an H80 cannot compete with that level of noise with stock fans, even if it delivers similar performance at full blast.
The 3 best performing AIO kits are Corsair H80/100 (and their i series) and Antec 920 H2O. Not a single one of those can deliver the same level of performance vs. noise characteristics as something like an NH-D14 with stock fans.
The Corsair H80/100 will outperform the top 5 air coolers at high fan speeds (maybe medium for H100) but they won't be as quiet without having to go out and get very expensive quiet case fans like Noiseblockers, Scythe Gentle Typhoons AP-15s or the new
E-Loop Bionics.
The other awesome perk of the NH-D14 is that you get lifetime mounting support from Noctua for the cost of shipping. So that means in 5 years if there is a new socket and you want to reuse the NH-D14, just pay shipping and they'll send you a kit for Socket ABCDE.
I would sell the H50 and keep the NH-D14. There are also a lot of great RAM options now that no longer compromise mounting of these large coolers:
1) Very good
Samsung 30nm DDR3-1600 kits.
2)
Crucial Ballistix Sport
3)
Crucial Ballistix Tactical