RAM SPEED CHANGED WHEN I ADD ANOTHER 4GB OF RAM ASPIRE E15 E5-576

Franz00
Franz00 Member Posts: 4 New User
edited November 2023 in 2020 Archives
I HAVE A ACER ASPIRE E15 E5-576
MY RAM SPEED IS1600MHZ WHEN I ADD ANOTHER 4GB OF RAM THE RAM SPEED CHANGED TO 1333MHZ CAN SOME PLEASE HELP ME?

Answers

  • brummyfan2
    brummyfan2 ACE Posts: 28,451 Trailblazer
    Hi,
    If you mix memory modules with different speeds, it will downclock to the lower speed, please download and install CPU-z, post the screen shots of Memory tab and SPD tab for both slots.
    https://www.cpuid.com/softwares/cpu-z.html
  • Franz00
    Franz00 Member Posts: 4 New User

  • brummyfan2
    brummyfan2 ACE Posts: 28,451 Trailblazer
    Hi,
    I am stumped, I can see only difference in CL value, apart from that both look identical, could you please post the model of your CPU, like i3-xxxx.
  • Franz00
    Franz00 Member Posts: 4 New User
    edited October 2020
    its i5-8250u
    i dont know what to do im kinda stressed lol 
  • brummyfan2
    brummyfan2 ACE Posts: 28,451 Trailblazer
    You could also check for any bent pins, dust/debris in the modules, wipe them clean with soft cloth and try, you can check the individual speeds by installing one by one, please post the results.
  • brummyfan2
    brummyfan2 ACE Posts: 28,451 Trailblazer
    Hi,
    Please try the method in my previous post, if that doesn't help you have to swap the second module(99P5471-006)  to another one with CL value of 11.
  • Franz00
    Franz00 Member Posts: 4 New User
    Okay thank you! i'll try it now 
  • StevenGen
    StevenGen ACE Posts: 12,060 Trailblazer
    edited October 2020
    Franz00 said:
    I HAVE A ACER ASPIRE E15 E5-576
    MY RAM SPEED IS1600MHZ WHEN I ADD ANOTHER 4GB OF RAM THE RAM SPEED CHANGED TO 1333MHZ CAN SOME PLEASE HELP ME?

    Your ram sticks “HAVE TO BE THE SAME” type and timings (see capions SPD#1 and SPD#3 as and if you have 2x ram sticks that are different in timings (which yours do) the combined ram always works to the lowest common speed. This is a rule of thumb with ram, see these captions of 2x 4GB PC3-14200 and CPUz readings and “Task Manager” readings as your 2x 4GB ram are not the same and that is why you are getting lower speeds, simple! Btw, this is for an Aspire V3-571G and yes it can run on PC3-14200 and works 100% and appropriatley quick.  




  • haretz
    haretz Member Posts: 14

    Tinkerer

    edited October 2020
    Your Part Number/SKU are very different. Its a misconception that any mixed RAM can work, albeit to lowest settings. There is some freedom RAM controllers exercise, overriding motherboard rules. Samsung RAMs are notoriously known for refusing to work with any other brand for instance. My view is since the part numbers are vastly different ergo different manufacturing process/factories, there are more set of hidden circuit parameters beyond the timings, for which the lowest settings will apply.