Mismatching RAM

[Snowy]

Hi all,
I have 32GB of Crucial Ballistix DDR4-3600 PC4-28800 CL16 in my computer. Yesterday at Microcenter I picked up 32GB of Corsair Vengeance DDR4-3200 PC4-25600 CL16. Beside the speed difference, there should be no issue throwing this new memory into the computer w/ the Crucial for 64GB total? Will I need to adjust anything in the BIOS? I assume the computer will automatically switch the speed of the Crucial to match the speed of the Corsair but I am not certain.

Thanks

 

[LazyGamer]

You're in for a fun time - start with memory at defaults (JEDEC, not XMP etc.), and move up from there, if the systems posts.

 

[MadMummy76]

I used to have mismatched RAM all the time up to DDR3. Just manually set the timings of the slower RAM don't rely on automagical solutions. Still there are no guarantees that it will work.

 

[Snowy]

Well I installed the RAM, set the speed to that of the slower sticks, then put everything else as "Auto" in the BIOS and it all seems to be working well thus far!

 

[LazyGamer]

Well I installed the RAM, set the speed to that of the slower sticks, then put everything else as "Auto" in the BIOS and it all seems to be working well thus far!

Go run y-cruncher on it for a while - if it's stable stable, it'll pass (make sure your CPU is set to default too).

 

[igor_kavinski]

You can run the stability test of this tool too: https://github.com/Baryka007/GearBench

It errored out at 0.01% on my 12700K 7200 MT/s RAM profile, as it should because y-cruncher did the same. However, everything else (including Windows updates) seems to be fine.

 

[LazyGamer]

It errored out at 0.01% on my 12700K 7200 MT/s RAM profile, as it should because y-cruncher did the same. However, everything else (including Windows updates) seems to be fine.

Personally I'd dial it back - but stability is a spectrum, not a binary state, so if you can live with it then it's fine lol