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 Z Series Z51-70 Laptop Hard Drive Replacement - LaptopHDS.com
Which RAM should I buy for a Lenovo Z51-70 Notebook (80K60002IN) laptop for a memory upgrade? - Quora
Solved! - LENOVO Z51-70 replacing DVD/CD drive with SSD with caddy not recognised by BIOS | Tom's Guide Forum