Upgrading the ram-is it compatible?

[zrncescientiae]

Hi everyone!

I am looking for ram to upgrade my lenovo flex 2 15 which has only 4 gb of ram and it's so so slow. I have found on the forums information about ram upgrade that it can be done. I have free slot avaialable. My current ram is 4 gb ddr3 1600 mhz with dual voltage 1.35 V & 1.5 V. CPU-Z shows that it operates on 1.35 V.

I have googled about adding another ddr3 on the motherboard that has dual voltage ram. Is this ram from kingston compatible with my setup?
http/pokit.org/get/img/c7faf56185d3004fb0c982378af30750.jpg

or this one

http/pokit.org/get/img/5a3ee646064e3b33df3611ea1ba985c7.jpg

 

[Emerald]

The best way to add a second memory stick is to find another one of the make and model that is in your system.

You have a 50/50 chance of running into problems when mixing memory.