Summary: Still going strong after more than a year. In my experience, RAM never failed me. My motherboard showed them at 1600MHz and can be overclocked to 2400 from Motherboard BIOS. I was never able to get to that speed and make it stable. I maxed out my system with 64GB of RAM. I am glad I did that. As people move to DDR4's, these DDR3 RAM's will get more and more expensive. Eventually to a point where you have to build/buy a new system.
Summary: It's Fantastic. Helps quickly and evenly dissipates the heat for better system reliability and robustness, as well as greater overclocking potential. Memory Size 16 GB Form Factor DIMM Memory Speed 1866 MHz Memory Technology DDR3 SDRAM amazing!
Summary: Originally comes clocked at 1333MHz. Using the overclocking features in my motherboard (MSI Z87-G45), it's REALLY easy to set up. I have it running at 2000MHz, and I could go higher but I don't feel the need to. This memory is fast! However, i wish it came pre-set to 2400MHz. As someone who just built my first PC, I thought it was just plug-and-play at 2400MHz; turns out there's just one step in between.
Summary: Built one from the ground up based on a I7-4960X Extreme CPU and ASUS X79 Deluxe, 16 GB Kingston HyperX 2400 MHz memory and a fast Samsung 250GB SSD in Catching II mode with a WD 2TB Green HD and it is awesome.