How To Upgrade RAM In Lenovo z5170 , Lenovo z4170, Ideapad 500 laptop - YouTube
Notebooks, G50-80, G40-80, Z41-70, Z51-70 » Lenovo Notebooks, All-in-One & Desktop PC Offers 20 May – 30 Jun 2015 | SINGPromos.com
RAM Compatibility for Lenovo Z51-70 | Tom's Hardware Forum
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