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Solved Not sure if this RAM is compatible with my notebook

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Rinart73

Rinart73

PCHF Member
May 22, 2021
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#1
I'm not great with hardware, this is my first time upgrading RAM.
My notebook is Asus VivoBook X556UR. It seems to have 1 slot soldered (4GB in my case) and 1 free slot.
From what I gathered the soldered RAM is MTA8ATF51264HZ-2G1 with 2133 MHz and CL15.
The CPU is i5-6200U and it seems that max supported RAM speed is 2133 MHz.
In my local store the only 8GB choices are:
  • Kingston KVR32S22S8/8 with 3200MHz and CL22
  • Patriot PSD48G266681S with 2666MHz and CL19
If I understand correctly the CPU should just force any of these two to use 2133MHz frequency and they should work just fine?
But because of CL, it would be better to choose Patriot because the latency will be lower and close to the soldered RAM latency.
I've read that mixing RAM from 2 different companies and with different latencies is not a great idea but I don't have much choice here.
 
#2
I would agree with all your statements - never good to mix and match RAM specs, but as you say, you have little choice.
the only real test will be a suck it and see one.

most local shops should allow you to test the memory at the store to make sure it works, then if not, try another. :)

have you tried contacting ASUS to see if you can get another stick that matches the one already onboard.
yes, only would be a 4GB upgrade (doubling your overall capacity) but hey, you'll have a guarantee it'll work!
 
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