Showing results for 
Search instead for 
Did you mean: 
What's DOS?
Posts: 3
Registered: ‎09-22-2014
Location: zanzibar
Views: 1,654
Message 1 of 3

Y50 and 1866 memory upgrade

Does my laptop support 1866 ram?

I was looking at the 1866 cl10 1.35v or 1600 cl9...

Would the bios support higher frequencies or tighter timings?

I tried finding the answer in maintenance manual, but there is not enough info.


Social Support Agent
Social Support Agent
Posts: 5,824
Registered: ‎02-11-2012
Location: PH
Views: 1,624
Message 2 of 3

Re: Y50 and 1866 memory upgrade

hi prndl,


If you have the Y50 with the  i7-4700HQ / i7-4710HQ CPU then the DDR3L-1866 won't work as the memory controller built-in to the processor can only support up to a DDR3L-1333 / 1600.


Link to picture

Link to picture


I recommend you get a DDR3L-1600 (1.35v) for best compatibility.




Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

Follow us @LenovoSupport on Facebook and Twitter!

What's DOS?
Posts: 3
Registered: ‎09-22-2014
Location: zanzibar
Views: 1,620
Message 3 of 3

Re: Y50 and 1866 memory upgrade

What about lower timings?

I think the capabilities of ram settings are controlled by BIOS. CPU's memory controller is not exactly fixed/limited to exact speeds... For example, Intel site specifiactions states (for my desktop cpu):

Memory TypesDDR3-800/1066

but I am runnig 2200mhz with overclock.

Or for example, on the Memory Type of i7 4770 is stated as: DDR3-1333/1600, but that does not mean it will not work with higher frequency RAM. While on this topic, can you point me to an Intel mobile CPU that natively supports 1866 or 2133 DDR3L memory?

Now, I know that this laptop does not support overclocking, I am just saying that BIOS could enable usage of 1866 memory...

I have a friend who was using 1866 sticks in Y50, but he sold the laptop and did not check the frequency (unfortunatelly).

I guess I will have to find out for myself, it is not that much of a price difference anyway, and if it does not support it will set 1600 CL9 by JEDEC.

Check out current deals!

Shop current deals

Top Kudoed Authors