What should be the DDR5 settings on the AMD B650E motherboard?

[Orodruin]

Hello everyone;

I have a 7900x3d processor, Asus ROG B650E-E motherboard and GSKILL EXPO NEO 6400MT/S CL32 2X24GB ram kit.

I usually use my computer in standard settings.
I only open EXPO.

What settings do you recommend I make especially for DDR5?
Which of the settings I shared below should be on or off?

CSM (Compatibility Support Module) Enable or Disable?
Fast Boot Enable or Disable?
Memory Context Restore Enable or Disable?
DRAM Power Down Mode Enable or Disable?
TSME and Data Scramble Settings Enable or Disable?

How should I configure these settings?
By the way, I am not interested in the OC process. I just activate the EXPO setting.

 

[GerKNG]

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[AusWolf]

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This. Except if MCR doesn't work (the system hangs up during boot). In that case, disable it.

Also, check your SoC voltage, make sure it's 1.3 V or lower on Auto. Trying 1.2 V couldn't hurt, either.

Also also, check if the memory controller runs in 1:1 mode. If it does, happy days. If it hangs up on boot, or isn't stable, 1:2 is fine.

 

[3DVCash]

This. Except if MCR doesn't work (the system hangs up during boot). In that case, disable it.

Also, check your SoC voltage, make sure it's 1.3 V or lower on Auto. Trying 1.2 V couldn't hurt, either.

Also also, check if the memory controller runs in 1:1 mode. If it does, happy days. If it hangs up on boot, or isn't stable, 1:2 is fine.

Yup, MCR and DRAM Power Down Mode generally don't play well together. I think Asus boards automatically disable it now when MCR is turned on, but not sure. I turn it off manually myself.

Also, since you're on an ASUS board, OP, make sure when enabling EXPO you try "EXPO Tweaked." It applies the standard RAM kit timings/voltage + optimized subtimings which can give big gains on AM5.

 

[Orodruin]

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I'll set it up this way. Thank you very much.

This. Except if MCR doesn't work (the system hangs up during boot). In that case, disable it.

Also, check your SoC voltage, make sure it's 1.3 V or lower on Auto. Trying 1.2 V couldn't hurt, either.

Also also, check if the memory controller runs in 1:1 mode. If it does, happy days. If it hangs up on boot, or isn't stable, 1:2 is fine.

Where can I check if the memory controller is working in 1:1 mode?

My 6400MT/s CL32 RAMs work fine when I open EXPO. Since they are M-DIE Hynix type memory, they are 2x24gb.
Even the 8000MT/s RAM kit I use works fine on my motherboard. It is on the memory support list.

Yup, MCR and DRAM Power Down Mode generally don't play well together. I think Asus boards automatically disable it now when MCR is turned on, but not sure. I turn it off manually myself.

Also, since you're on an ASUS board, OP, make sure when enabling EXPO you try "EXPO Tweaked." It applies the standard RAM kit timings/voltage + optimized subtimings which can give big gains on AM5.

Should I turn off the MCR and DRAM Power Down Mode settings?

EXPO settings show EXPO I, EXPO II, and EXPO Tweaked.
Would it be enough to select EXPO Tweaked? Do I need to make any other settings after selecting it?

 

[Toothless]

I'll set it up this way. Thank you very much.



Where can I check if the memory controller is working in 1:1 mode?

My 6400MT/s CL32 RAMs work fine when I open EXPO. Since they are M-DIE Hynix type memory, they are 2x24gb.
Even the 8000MT/s RAM kit I use works fine on my motherboard. It is on the memory support list.


Should I turn off the MCR and DRAM Power Down Mode settings?

EXPO settings show EXPO I, EXPO II, and EXPO Tweaked.
Would it be enough to select EXPO Tweaked? Do I need to make any other settings after selecting it?

8000 isn't going to be playing nice with your FCLK. The reason people go with 6000 kits is because FCLK will almost always work at 2000. It's a 3:1 ratio that helps with latency. Speed isn't everything.

Make sure your MCLK is half your DRAM speed.

 

[AusWolf]

Where can I check if the memory controller is working in 1:1 mode?

You should see something like "UCLK DIV mode" or something similar. If UCLK=MCLK, it means the memory controller runs 1:1, if UCLK=MCLK/2, then it's half speed, or 1:2 relative to RAM.

Edit: The Zen 4 memory controller usually tops out at around 3000-3200 MHz - that is, 6000-6400 MHz RAM is usually fine 1:1, above that, only 1:2 works, except for some rare golden samples.

Should I turn off the MCR and DRAM Power Down Mode settings?

Only if they cause issues (for example, hangup during boot). These are features that are designed for the board to skip certain parts of the initial RAM training, but they don't always work well.