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Thread: 48GB RAM setup?

  1. #1
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    48GB RAM setup?

    Hey guys,

    Is anyone using 48 GB of RAM (2x 16GB + 2x 8GB)?

    I would kind of like a bump over 32GB without having to go all the way to 64GB. Will picking up a pair of 2x 16GB sticks with the same timings as the first work ok with 24GB in each channel?

  2. #2
    ROG Guru: Green Belt Array Phillyflyer's Avatar
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    Quote Originally Posted by evilpaul13` View Post
    Hey guys,

    Is anyone using 48 GB of RAM (2x 16GB + 2x 8GB)?

    I would kind of like a bump over 32GB without having to go all the way to 64GB. Will picking up a pair of 2x 16GB sticks with the same timings as the first work ok with 24GB in each channel?
    Mixing 2 kits of memory is not recommended....you will most likely encounter issues doing so.
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  3. #3
    ROG Enthusiast Array kens30 PC Specs
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    Quote Originally Posted by Phillyflyer View Post
    Mixing 2 kits of memory is not recommended....you will most likely encounter issues doing so.

    I currently have [Trident Z RGB] F4-3200C14D-16GTZR and want to get another same kit to upgrade to 32gb.
    What kind of issues may i encounter? I have already asked about this to others on another forum and they had no issues doing so.
    I wont be using XMP i will manually enter the Speed and timings, i will even drop the speed if i have to.

  4. #4
    ROG 師傅 Array Arne Saknussemm PC Specs
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    Quote Originally Posted by kens30 View Post
    What kind of issues may i encounter?
    https://rog.asus.com/forum/showthrea...atoes-overview

  5. #5
    ROG Enthusiast Array kens30 PC Specs
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    Thanks for the link Arne Saknussemm.

  6. #6
    ROG 師傅 Array Arne Saknussemm PC Specs
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    Nah, you're welcome...

    Some people get lucky and combine kits and their IMC/setup can handle it...but it's advised against by all manufacturers and loads more people have trouble doing it than don't, from what I have seen.

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    Administrator Array Silent Scone@ASUS's Avatar
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    Quote Originally Posted by Arne Saknussemm View Post
    Nah, you're welcome...

    Some people get lucky and combine kits and their IMC/setup can handle it...but it's advised against by all manufacturers and loads more people have trouble doing it than don't, from what I have seen.
    Bottom line, if you find yourself asking the question then it's probably best to avoid

  8. #8
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    Quote Originally Posted by Arne Saknussemm View Post
    Nah, you're welcome...

    Some people get lucky and combine kits and their IMC/setup can handle it...but it's advised against by all manufacturers and loads more people have trouble doing it than don't, from what I have seen.
    Just an update
    I decided to just go for it and got another kit of [Trident Z RGB] F4-3200C14D-16GTZR and everything is working just fine at rated speeds and timings.
    I ran HCI memtest 12 instances with 90% of 32gb and let it run to 800% coverage and not a single error.

    What i always found weird is that originally with 16gb XMP gave me very high voltages of CPU VCCIO 1.15 and CPU System Agent Voltage of 1.35.
    So i decided to not use XMP and manually enter frequency 3200mhz plus timings, default voltages for VCCIO 0.950 and System Agent to 1.050 ram 1.35v,
    my RAM run just fine tested with HCI memtest.

    Now with 32gb 4x8gb all slots populated ram still runs fine with VCCIO 0.950 and System Agent 1.050.
    Does this mean i have great IMC?

  9. #9
    ROG 師傅 Array Arne Saknussemm PC Specs
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    Quote Originally Posted by kens30 View Post
    Does this mean i have great IMC?
    Well maybe...certainly robust enough...it depends a bit....you might be lucky enough that the two kits are similar enough and the IMC is not taxed....or the IMC is built like a tank and loving the challenge...

    Those voltages can give instability too high as well as too low so it's always good to tune...

    And ASUS T topology boards favour 4 dimms

    Just for the record:
    Corsair
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    G.Skill
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    Last edited by Arne Saknussemm; 03-14-2019 at 07:23 AM.

  10. #10
    ROG Enthusiast Array kens30 PC Specs
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    Quote Originally Posted by Arne Saknussemm View Post
    Well maybe...certainly robust enough...it depends a bit....you might be lucky enough that the two kits are similar enough and the IMC is not taxed....or the IMC is built like a tank and loving the challenge...

    Those voltages can give instability too high as well as too low so it's always good to tune...

    And ASUS T topology boards favour 4 dimms

    Just for the record:
    Corsair
    Click image for larger version. 

Name:	Corsairfineprint.png 
Views:	0 
Size:	30.3 KB 
ID:	79503
    G.Skill
    Click image for larger version. 

Name:	G.Skillfineprint.png 
Views:	0 
Size:	28.3 KB 
ID:	79504
    Thanks for all the info
    Do i need to run other tests for stability or is HCI memtest ok as i tested up to 800%..
    By the way i am only running stock clocks for CPU and no multi core enhancement at the moment.
    I think my board is a T topology or is it not?

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