My laptop has 4gb ram, and i wanna upgrade it to 12gb (gonna add 8*1 gb stick). So which ram (G.SKILL Ripjaws Series 8GB 204-Pin DDR3 SO-DIMM DDR3L 1600 (PC3L 12800) Laptop Memory Model F3-1600C9S-8GRSL OR Kingston 8 GB RAM FOR LAPTOP 1600MHZ PC3L - KVR16LS118) should i buy or any other 8*1 gb stick that would be compatible ?