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Can't get CMW32GX4M2C3200C16 at 3200Mhz with 4 sticks


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Hi Guys.

I upgrade my system from a Ryzen 3700x and 32GB of Corsair Venegance RGB PRO, to a 5900x and 64GB.

I buy another 2 sticks of the same model (CMW32GX4M2C3200C16), but I noticed that this new pair, use memory models from Nanya. The first one is Hynix.

 

With default XMP at 3200Mhz it boots, but I have random crashes on very high load (software compilation tasks, 24 or more threads), and some few gameplays.

 

So, I cleared my CMOS Settings, put XMP on again, and lower clocks to 3066 and its working solid now. Do you guys think that the cause is different module vendors? Can it be a BIOS problem? I'm running the last avaliable Beta Bios, with Agesa 1.2.0.1PatchA, because it contain fixes for USB + Ryzen 5k.

 

Module Details:

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Probably cos you run 2x dual channel kits not intended to be combined altho im sure they could be combined but require some tweaking, which might be really hard or easy depending on how good your cpu and mainboard is.

Thanks for answer!

Do you think that its better to wait for a "stable" BIOS, as I'm using F33g for now?

 

And, i'm not a high end user, and I don't do any overclock here (well, I only enable XMP).

Can you share some tips of how to start this tweaks? Maybe increase latency values, or allow a little bit more tension.

1.35v is the limit for safe usage for long periods with a consistent load (not stress test, only real workload).

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  • Corsair Employees

We do not recommend or guarantee for the ability to mix separate kits of memory together, even of the same part number, as it can cause compatibility issues such as preventing XMP/DOCP from enabling, system stability, or even prevent your system from booting. Our DRAM kits are only validated and guaranteed to work in the configuration they were packaged and sold as there is no guarantee you will receive the exact version you did before and mixing modules with different ICs is never a good idea.

 

Our recommendation would be to utilize a single kit at the capacity and speed you desire that is listed on your motherboard's memory QVL as compatible. We are not going to be able to assist in any way getting those two kits to work together and run at the speed and timings you wish to have since we do not assist with manual overclocking/tuning of memory.

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We do not recommend or guarantee for the ability to mix separate kits of memory together, even of the same part number, as it can cause compatibility issues such as preventing XMP/DOCP from enabling, system stability, or even prevent your system from booting. Our DRAM kits are only validated and guaranteed to work in the configuration they were packaged and sold as there is no guarantee you will receive the exact version you did before and mixing modules with different ICs is never a good idea.

 

Our recommendation would be to utilize a single kit at the capacity and speed you desire that is listed on your motherboard's memory QVL as compatible. We are not going to be able to assist in any way getting those two kits to work together and run at the speed and timings you wish to have since we do not assist with manual overclocking/tuning of memory.

Do you guys think that this memory sticks can damaged, if used together? Its running rock solid with 3066Mhz.

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they won't get damaged as long as you don't shove 2V into them.

 

They are running on 1.35v. I will try to tweak subtimings a little bit and check if I can reach 3200Mhz stable, but I will keep 1.35v as limit.

Thanks!

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  • Corsair Employees
They are not damaged. The issue is you are attempting to mix two different kits together and force them to work in a manner in which they are not validated or guaranteed to work as. Each kit is only validated and guaranteed to work in the configuration they are packaged and sold. In your situation that would mean that each kit are only guaranteed to work as two individual 32GB (2x16GB) kits, and are not a single 64GB (4x16GB) kit. As you pointed out each kit have completely different ICs and are not compatible with each other.
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