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Blue Screen Again
Posts: 2
Registered: ‎09-11-2017
Location: GB
Views: 6,097
Message 1 of 4

Lenovo z50-70 Ram upgrade

Hi there,


I was quickly going thru a few ram upgrade topic but can't find the right answer. 

So I'd like to surprise my Mrs and bought an SSD into her laptop and want to upgrade the memory as well. 

But I'm not sure which one I choose 🤔

The laptop has this ram atm 


Sk Hynix 4gb ddr3 1600mhz pc3l 12800s 11-13-B4

hmt451s6bfr8a pb no aa 1443


my question is can I choose diff part number from this ram? Like 

hmt451s6afr8a or



so basically there are a lots of them with diff letter after the "6" digit. 

Is it a problem if it won't be identical? Or just the MHz voltage brand should be match?


Thank you for pointing me on the right direction 🙏🤞



Retired Support Specialist
Posts: 182
Registered: ‎07-19-2017
Location: IN
Views: 6,043
Message 2 of 4

Re: Lenovo z50-70 Ram upgrade

Hi Attis,


Welcome to Lenovo Forums.


As a Lenovo support , I may have to say use the FRU part number as provided from the hardware manual ( item 12 page 80) and order them thru directly from Lenovo authorized centers .


But as fellow user enthusiast ,  as long as the specs is the same :

16GB max / PC3-12800 1600MHz DDR3L, non-parity, dual-channel capable, two 204-pin SO-DIMM sockets . Better having same brand for full compatibility in case you plan to get 2 pieces of 8GB .

Check for the reviews and brand certification saying that they certify it to run on this model. 

Example: crucial's  , kingston's , amazon's , Samsung's 


From the hardware manual list , you can also match for the manufacturer part (ex . M471B1G73QH0-YK0 ) for preferred brands making sure that you get a  PC3-12800 1600MHz DDR3L  (1.35v Low Voltage Low Power) . As I buyer I check on return options too just in case .


 Hope the above information helps and please let us know how you go about.


Please feel free to post in Lenovo Community Forums if you have any further queries!





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Blue Screen Again
Posts: 2
Registered: ‎09-11-2017
Location: GB
Views: 6,039
Message 3 of 4

Re: Lenovo z50-70 Ram upgrade

Thank you Rhamizz for the heads up Smiley Wink

What's DOS?
Posts: 1
Registered: ‎03-09-2019
Location: IN
Views: 1,592
Message 4 of 4

Re: Lenovo z50-70 Ram upgrade

4gb ddr4 is it possible to add in ram slot for this?

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