Ram and acer helios - Ryzen edition

RiotM

so i am using the ACER helios 500 with ryzen and vega which is a very capable machine, although due to using a lot of autocad and photogrammetry software i keep maxing out the 16gb of ram thats preinstalled.

Therefore i purchased an additional 32gb of 2400mhz ram and installed into the two remaining slots giving me 48gb in total. It seems to be running ok from a user perspective but im now getting 931.1mhz at CL13 instead of the original 1200mhz at CL17 that i had before i installed the new ram.

am i missing something thats causing the downgrade or do i need to remove the original ram for the new chips to work at their full potential. I thought i would of at least had 1200mhz across all chips..

any help you be welcomed

brummyfan2

Hi,
Could you please post the full model name of your laptop, like PH517-xx, the original RAM model number and the new modules model number.

RiotM

Model PH517-61

The original Ram is what ever came in the laptop im not sure how to find that out?

new ram is HyperX IMPACT 2400mhz ddr4 CL14  HX424S14IBK2/32

Current new ram settings:

931.3MHZ  13-13-13-30 still running as dual channel

brummyfan2

Hi,
Install CPU-z free program, run it and go to SPD tab, use the drop down arrow to find all the information about other installed modules, please post the snips.
You have CL17 original modules and bought a CL14 module, this may have caused the problem, you can check by removing the original modules and run with the newer modules, check in CPU-z.
https://www.cpuid.com/softwares/cpu-z.html

RiotM

i can't get any information from the cpu slots....?

going to be annoyed if i have to take the full laptop apart to remove the original sticks of ram so that i can return to 1200mhz on the new 32gb or ram.

if i remove the new 32gb of ram the original 16gb returns to 1200mhz both the 16gb set and the 32gb set are 2400 speed

brummyfan2

OK, you have 16GB 2400 MHz CL=17 modules in your laptop(from your original post), return these new modules and get 2 modules of Hynix(link) and install them to make the total of 48GB.
This module has CL value of 17, I think the difference in CL value causes the speed reduction.
If you prefer Crucial, get the modules from them and install.
https://www.amazon.com/Hynix-HMA82GS6AFR8N-UH-16GB-DDR4-2400-SODIMM/dp/B071ZT7K5N
https://uk.crucial.com/gbr/en/compatible-upgrade-for/Acer/predator-ph517-61
file:///C:/Users/brummyfan/Downloads/computing_ds_8Gb_DDR4(A-ver)based_SODIMMs(Rev.1.4).pdf