03-04-2017 10:55 AM
I have a thinkpad P50 that came with 16GB of RAM DDR4 (2 modules of 8GB each). By using CPU-Z I saw the ram is Samsung M471A1K43BB0-CPB.
I want to upgrade to 32GB of ram so I have two options:
1) Buy other 2 8GB modules of the same model that I already have.
2) Buy a 16GB Kingston Kcp421sd8/16.
If I go with option #2 should I expect a performance downgrade? I will have one 16GB module and 2 8GB modules.
I have attached a picture of ram slot#1 with cpu-z.
03-05-2017 11:59 AM
Any performance downgrade is more theoretical than actual. I doubt you would notice. It is nice to have an empty slot for future upgrades.
03-06-2017 11:34 AM - edited 03-06-2017 11:37 AM
Thanks for your response I think I'll get the 16GB dimm. Which would be the optimum ram modules placement? The two factory modules are installed in the slots located under the keyboard (slot 1 and slot 3). This computer has another 2 slots at the back (slot 2 and slot 4). Should I add the new 16GB module to slot 2 (which is at the back) or install the new 16GB module in slot 1 (under the keyboard) and the other two 8GB modules in slots 2 and 4 (at the back)?
03-06-2017 06:36 PM
By going with a single stick, your memory will work in single channel instead of double channel.
There's a ~18% difference in performance between SC / DC RAM with some applications (video editing):
In gaming and for most day-to-day programs, the difference is minor, though.
06-03-2017 02:39 PM
I have a similar question. I just bought a P50 with 8 Gig of RAM. I want to add 16 Gig. I think the 8 Gig is installed under the keyboard. If I just add one 16 Gig RAM stick to one of the slots on the back, will it work with the original 8 Gig to give me 24 Gig or will the fact that it is not matched/symmetric be a problem? Should I instead remove the 8 Gig and replace it?
06-03-2017 05:11 PM