RAM pairing in Lenovo Z5070

[krazzygenius]

I have a Lenovo Z5070 Notebook having a single 4gb RAM stick and I want to add 8gb Ram in addition to 4gb.
So my question is -
It is possible or not?
Which one should I purchase and how to pair them for best performance?

 

[algorithmbreaker]

I have a Lenovo Z5070 Notebook having a single 4gb RAM stick and I want to add 8gb Ram in addition to 4gb.
So my question is -
It is possible or not?
Which one should I purchase and how to pair them for best performance?

Yes, it will support. You can add a single 4 GB or 8 GB. OS has to be 64 Bit in order for the system to recognize more than 4 GB.

Refer this link:
http://www.memorystock.com/memory/IBMLenovoZ50.html