11-02-2016 07:43 AM - edited 11-02-2016 08:00 AM
I am using X220 i5 provided by office with 64 bit windows 7 enterprise edition.
it has been provided with one RAM 4GB 2rx8 1333.
I have a spare one RAM 2GB 1rx8 1333
after surfing online found that there will be some voltage diffrences & BIOS setup as well and suggested to contact manafacturer to ensure correct matching
1) can i use 4GB 2rx8 1333 + 2GB 1rx8 1333 in my X220 i5?
2) what are the pros & cons of this updation
3) do i need to mention any more info for answering above Question
4) what is the appx % of performance +/- if i am able to increase the ram to 6GB