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Paper Tape
Posts: 5
Registered: ‎06-06-2016
Location: US
Views: 243
Message 1 of 3

G50-70 Memory Upgrade Fail

I have a Lenovo G50-70 with an i7 chip, 8gb ram, 2x4gb. This was the "native" config.


I ordered a DD3L 1.35v 8gb memory stick from Crucial and installed it in one of the two slots, replacing

one of the original 4gb sticks.


Surprise, it wouldn't boot up (yes, it was seated properly).


Do the sticks have to be matched up in terms of size, this would have been a 4gb and an 8gb for a total of 12, or

would I have to install two 8gb sticks in this case?


One time before, I mistakenly ordered a DDL stick that had the higher voltage, 1.5, and discovered that was not compatible, not that you could tell from Lenovo's user manual.


So, anyway, this time I made sure it it was a 1.35v stick, and it still didn't work.


What gives here? When I ran the Crucial diagnostic, it reported that the motherboard could support 16 gb.



Sr Support Specialist
Posts: 8,129
Registered: ‎11-30-2015
Location: PH
Views: 213
Message 2 of 3

Re: G50-70 Memory Upgrade Fail



Welcome to the Community Forums.


As per the hardware manual :

Bus architecture : RAM: DDR3L, 1600MT/s (page 27) 

Standard memory : DDR3L, SODIMM × 1 / SODIMM × 2 (max 8 GB / 16 GB) (page 28)


Product specifications reference :

16GB max / PC3-12800 1600MHz DDR3L, non-parity, dual-channel capable, two 204-pin SO-DIMM sockets

JEDEC standard modules  8-8-8 / 9-9-9 / 10-10-10 / 11-11-11 timings


Basically mixing capacity is acceptable as example for 59427091  marketed with 2+4GB RAM , as long as specifications would be the same as the stock RAM ( matching with the print on the sticker ).


Would the new 8GB ram work on any of the slots alone?


FRU parts like from the hardware manual item 12 page 80 shows tested brands and capacities recommended by OEM.

Update us how it goes.



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Paper Tape
Posts: 5
Registered: ‎06-06-2016
Location: US
Views: 198
Message 3 of 3

Re: G50-70 Memory Upgrade Fail

I didn't want to mess around anymore with the memory, I already returned the stick.


I've had just about every brand  of Laptop in the last 15 years, and I'd have to say this Lenovo machine

does not inspire me with confidence. Swapping out a memory stick should not be this hard, I've done it dozens of times

over the years and never had this problem. It seems to be extremely finicky.


Mixing sizes should not be a problem. I know this stick was "compatible" because I ran the Crucial diagnostic

before I bought it.


This will be the first and last Lenovo laptop I buy, I'm going back to Toshiba next time.

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