Hi, fellows. I have a HP Pavilion 15-e001TU laptop that came with a 8GB PC3-12800 module (Micron Tech 16KTF1G64HZ-1G6E1) and I want to add one more. Options are Kigston KVR16LS11/8 and KCP3L16SD8/8 (the latter one is cheaper). What's the difference between them? Will it work in dual channel with the memory already installed in my machine? Thank you.