CMS 16GB (2X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Z Series Z51-70 - A7 at Amazon.com
Can I replace my Lenovo Z51-70 CPU? It's an i7-5500U which is very bad at multitasking. Can I replace the processor or the motherboard with a higher processor? - Quora
LENOVO Z5170 80K600YJSA Lenovo IdeaTab Z5170 5th gen Notebook Intel Dual i7-5500U 2.40Ghz 8GB 1TB 15.6" FULL HD R7 M360