Well my 3.5+ year old H50 just is not up to snuff anymore, and with its aluminum radiator and copper cooling plate after that period in time I am sure the micro fins have to have some corrosion or particles stuck in them since it has not been cooling like it used to with my 2 120mm Cougar Vortex push pull fans " that work great BTW" Plus the fact that some coolant has had to evaporated over the years so time for a new cooler for my 2600k.
I went with the Cooler Master Nepton 140XL that is equipped with a 37mm thick 140mm rad, 2 122CFM Jeyflow fans with 3.5 inches of static pressure that makes them very good to get lots of air through the thick radiator. A very powerful pump head that has a great micro fin design that frosty tech says is larger then any DIY they have seen, along with the largest diameter tubing for a AIO on the market. Since my 2600k has a Soldered on IHS and every review I read where they tested it on Sandy CPU it out performed pretty much everything.
I also picked up some Antech Diamond formula 7 TIM to use when I mount it since it has stellar review with 10-30c temp drops from TIM replacement only....I am sure the 20-30c reports were bad TIM application or cooler mounting but I sure hope not:) I plan on also using it on my 2 EVGA GTX 770 Classifieds so I will let you know how much my temps have fallen on my CPU and more so on the GPU's since that will really tell me how good the diamond stuff is.
I Also picked up a AMD Radeon 240GB SSD and a USB to SATA3 adapter so I can do a quick clone of my slow Kingston 128GB SSD.
Fun times Ahead, wish me luck and I will update in a few days