How to determin correct memory settings.

[Mr.Nicen]

I have been tinkering with some settings but without any success. From booting in safe mode to choppy video playback, currently only de auto config is working correctly. 

 

My specs:

• 192GB in 2x kits of  "Corsair VENGEANCE® 96GB (2x48GB) DDR5 DRAM 5200MT/s CL38 Memory" 
• Asus PRIME B650M-A WiFi II, mATX, AM5
• AMD Ryzen 9 7900

If i set the "Ai" Overclock Tuner to Auto it results in these settings:

Memory Device
	Array Handle: 0x0011
	Error Information Handle: 0x001C
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 48 GB
	Form Factor: DIMM
	Set: None
	Locator: DIMM 1
	Bank Locator: P0 CHANNEL B
	Type: DDR5
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 4800 MT/s
	Manufacturer: Corsair
	Serial Number: 00000000
	Asset Tag: Not Specified
	Part Number: CMK96GX5M2B5200C38
	Rank: 2
	Configured Memory Speed: 3600 MT/s
	Minimum Voltage: 1.1 V
	Maximum Voltage: 1.1 V
	Configured Voltage: 1.1 V
	Memory Technology: DRAM
	Memory Operating Mode Capability: Volatile memory
	Firmware Version: Unknown
	Module Manufacturer ID: Bank 3, Hex 0x9E
	Module Product ID: Unknown
	Memory Subsystem Controller Manufacturer ID: Unknown
	Memory Subsystem Controller Product ID: Unknown
	Non-Volatile Size: None
	Volatile Size: 48 GB
	Cache Size: None
	Logical Size: None

The overclock tuner has these options:

• [Auto] Loads the optimal settings for the system.
• [Manual] When the manual mode is selected, the BCLK (base clock) frequency can be assigned manually.
• [EXPO I] Load the DIMM’s default EXPO memory timings (CL, TRCD, TRP, TRAS) and other memory parameters optimized by ASUS.
• [EXPO II] Load the DIMM’s complete default EXPO profile. Load the memory parameters profile optimized by ASUS if no DIMM profiles detected.
• [DOCP I] Load the DIMM’s default DOCP memory timings (CL, TRCD, TRP, TRAS) and other memory parameters optimized by ASUS.
• [DOCP II] Load the DIMM’s complete default DOCP profile. Load the memory parameters profile optimized by ASUS if no DIMM profiles detected.
• [AEMP] Loads the memory parameters profile which is optimized by ASUS if no DIMM profiles are detected.

 

Downgrading to 96GB is not really an option. Do to work related stuff. 
Is this an issues because off the 4 dimms?

[y0ur5h4d0w]

did you try to run 2 sticks? AM5 is not happy with 4 sticks, also, did you check compatibility on your motherboard page? i found out the hard way that if you buy an SKU of RAM sticks that re not considered "compatible" by the manufacturer of your mobo might cause instability 

 

i know that MSI had a bios update that "should" have fixed or better found a workaround for 4 ram sticks but i didn't have cash to try 4 sticks since i went for 2x32gb ram, probably some bios update can help mitigate your instability too

[BillBill]

2 minutes ago, Mr.Nicen said:

I have been tinkering with some settings but without any success. From booting in safe mode to choppy video playback, currently only de auto config is working correctly. 

 

My specs:

• 192GB in 2x kits of  "Corsair VENGEANCE® 96GB (2x48GB) DDR5 DRAM 5200MT/s CL38 Memory" 
• Asus PRIME B650M-A WiFi II, mATX, AM5
• AMD Ryzen 9 7900

If i set the "Ai" Overclock Tuner to Auto it results in these settings:

Memory Device
	Array Handle: 0x0011
	Error Information Handle: 0x001C
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 48 GB
	Form Factor: DIMM
	Set: None
	Locator: DIMM 1
	Bank Locator: P0 CHANNEL B
	Type: DDR5
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 4800 MT/s
	Manufacturer: Corsair
	Serial Number: 00000000
	Asset Tag: Not Specified
	Part Number: CMK96GX5M2B5200C38
	Rank: 2
	Configured Memory Speed: 3600 MT/s
	Minimum Voltage: 1.1 V
	Maximum Voltage: 1.1 V
	Configured Voltage: 1.1 V
	Memory Technology: DRAM
	Memory Operating Mode Capability: Volatile memory
	Firmware Version: Unknown
	Module Manufacturer ID: Bank 3, Hex 0x9E
	Module Product ID: Unknown
	Memory Subsystem Controller Manufacturer ID: Unknown
	Memory Subsystem Controller Product ID: Unknown
	Non-Volatile Size: None
	Volatile Size: 48 GB
	Cache Size: None
	Logical Size: None

The overclock tuner has these options:

• [Auto] Loads the optimal settings for the system.
• [Manual] When the manual mode is selected, the BCLK (base clock) frequency can be assigned manually.
• [EXPO I] Load the DIMM’s default EXPO memory timings (CL, TRCD, TRP, TRAS) and other memory parameters optimized by ASUS.
• [EXPO II] Load the DIMM’s complete default EXPO profile. Load the memory parameters profile optimized by ASUS if no DIMM profiles detected.
• [DOCP I] Load the DIMM’s default DOCP memory timings (CL, TRCD, TRP, TRAS) and other memory parameters optimized by ASUS.
• [DOCP II] Load the DIMM’s complete default DOCP profile. Load the memory parameters profile optimized by ASUS if no DIMM profiles detected.
• [AEMP] Loads the memory parameters profile which is optimized by ASUS if no DIMM profiles are detected.

 

Downgrading to 96GB is not really an option. Do to work related stuff. 
Is this an issues because off the 4 dimms?

AMD does not seem to work well with 4 sticks of RAM. It can cause stability issues. Also using 2 kits can even cause further issues. Most people would recommend at matching kit of 4 sticks. Being exactly the same out of the same box. It probably will work without EXPO enabled. So not overclocking the RAM. Also some BIOS versions are a little better with RAM stability at 4 sticks. Just remove the EXPO settings and let it run at base speed.  Match sure to place the matching RAM into slots A-2 and B-2 and the other matching into A-1 and B-1  RAM slots 

[SpookyCitrus]

DDR5 is known to have issues with 4 DIMMs regardless of CPU, but especially with Ryzen, you'll typically see even more issues when mixing two kits together to get 4 DIMMs. The kits are not tested or guaranteed to work together from the factory whereas with a 4 DIMM purchased kit they are. The issue you then run into with that is there aren't many 4 DIMM DDR5 memory kits available, due to the issues with running 4 DIMMs and the ones that are available are typically server memory or slower kits. And the highspeed, high capacity kits that are available are uber expensive.

 

Also, just to add 5200MT/s CL38 is way to slow for Ryzen, the ideal memory speed for Ryzen processors is 6000MT/s CL30.

 

I'd try running the kit with DOCP/EXPO disabled, just at base speeds and see if it runs stable, if it does that's how you will have to run it. If it doesn't that's going to be an issue with them not being paired kits and mixing two separate kits together. 

[GuiltySpark_]

The setup you're asking to work will take some effort to get running. Are you on the latest BIOS? B650 has had many updates since 2022, many of which pertain to memory compatibility. 192GB is likely going to take ages to train the first time as well.

 

I would stay far away from an motherboard specific built "AI tuners" When you say the "Auto" config, is the memory running at 5200 or 4800? 

[PDifolco]

40 minutes ago, Mr.Nicen said:

I have been tinkering with some settings but without any success. From booting in safe mode to choppy video playback, currently only de auto config is working correctly. 

 

My specs:

• 192GB in 2x kits of  "Corsair VENGEANCE® 96GB (2x48GB) DDR5 DRAM 5200MT/s CL38 Memory" 
• Asus PRIME B650M-A WiFi II, mATX, AM5
• AMD Ryzen 9 7900

If i set the "Ai" Overclock Tuner to Auto it results in these settings:

Memory Device
	Array Handle: 0x0011
	Error Information Handle: 0x001C
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 48 GB
	Form Factor: DIMM
	Set: None
	Locator: DIMM 1
	Bank Locator: P0 CHANNEL B
	Type: DDR5
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 4800 MT/s
	Manufacturer: Corsair
	Serial Number: 00000000
	Asset Tag: Not Specified
	Part Number: CMK96GX5M2B5200C38
	Rank: 2
	Configured Memory Speed: 3600 MT/s
	Minimum Voltage: 1.1 V
	Maximum Voltage: 1.1 V
	Configured Voltage: 1.1 V
	Memory Technology: DRAM
	Memory Operating Mode Capability: Volatile memory
	Firmware Version: Unknown
	Module Manufacturer ID: Bank 3, Hex 0x9E
	Module Product ID: Unknown
	Memory Subsystem Controller Manufacturer ID: Unknown
	Memory Subsystem Controller Product ID: Unknown
	Non-Volatile Size: None
	Volatile Size: 48 GB
	Cache Size: None
	Logical Size: None

The overclock tuner has these options:

• [Auto] Loads the optimal settings for the system.
• [Manual] When the manual mode is selected, the BCLK (base clock) frequency can be assigned manually.
• [EXPO I] Load the DIMM’s default EXPO memory timings (CL, TRCD, TRP, TRAS) and other memory parameters optimized by ASUS.
• [EXPO II] Load the DIMM’s complete default EXPO profile. Load the memory parameters profile optimized by ASUS if no DIMM profiles detected.
• [DOCP I] Load the DIMM’s default DOCP memory timings (CL, TRCD, TRP, TRAS) and other memory parameters optimized by ASUS.
• [DOCP II] Load the DIMM’s complete default DOCP profile. Load the memory parameters profile optimized by ASUS if no DIMM profiles detected.
• [AEMP] Loads the memory parameters profile which is optimized by ASUS if no DIMM profiles are detected.

 

Downgrading to 96GB is not really an option. Do to work related stuff. 
Is this an issues because off the 4 dimms?

Safest OC is Expo II, so 5200CL38 and manufacturers secondary/tertiary timings

Did you try it ?

But it's a 7000 not a 9000, so if it doesn't work try lowering clocks to 4800MT

[Mr.Nicen]

Thanks for all the help, i found out what's wrong the CPU only supports 2 banks of memory at this size. Next step is probably upgrading the CPU to a 9000 series Ryzen 9  
First i will try this for a while but I'm getting out of memory problems when running some larger models. Thanks again for all the help.