So I'm looking at a CPU cooler upgrade for silence and overclocking. The only one which I found which fits my criteria of silent dual tower CPU heatsink(apart from the Dark rock pro 3, which is too expensive where I'm from). Now to the question, my case is a NZXT source 210 (isn't the best, but it works), so I looked at the NH-D15 and NH-D15S and i saw they're pretty much the same, except the S version has no second fan for RAM clearance, however i have Kingston hyperX DDR3 which is only 30mm anyway so that doesn't matter, however there is also height compatibility with the case, my case says it can support 160mm but the NH-D15 is 165mm, I also heard from some sources that the D-15 will fit just fine in a 160m case. I am confused and would like a second opinion on the D15's compatibility.