Eher bei AM5 DDR 5 6000 mhz oder 5600 mhz, ich hab 6000 mhz verbaut aber bei mir machen die RAM Probleme?

Hello

… but always listen to AM5 you take 6000 mhz but I took the first time 6000 mhz and my PC makes faxing, don’t have to lie to the RAM but I’m very out of it

Then deactivate the XMP or the EXPO from the RAM modules again in the BIOS/UEFI, set the RAM configuration completely to AUTO and check if the PC then still faxes what you mean. Anyway, that’s not a good mistake description. It would have been good if you had described how the faxes your PC is doing.

If the PC continues to make faxes at the base storage speed, it is not at the RAM modules or not at the relatively high storage speed for them.

If the PC no longer faxes with the base storage speed, then the problem could actually be related to the RAM modules but different from you think.

Ryzen 7 7800X3D is installed. the board supports up to 6400 mhz

You see that wrong. The processor supports up to 5200MT/s storage speed and the motherboard, more precisely the BIOS/UEFI, can set storage speeds up to 6400MT/s in the processor. The motherboard thus supports only the settings up to 6400MT/s storage speed.

If you’re interested in what it’s about, just let it go.

The achievable storage speed depends not only on the RAM modules and not on the motherboard anymore, but primarily on the processor. The only mainboard is responsible for the achievable storage speed, which was once, a long time ago. Today, however, this is different since parts of the motherboard chipset, which are responsible for the RAM connection, are migrated into the processor. Therefore, today the processor is primarily responsible for the achievable storage speed and no longer alone the motherboard and the RAM modules.

The storage speed is not set at the RAM modules, as is repeatedly mistakenly assumed, and also not on the motherboard, but the BIOS/UEFI of the motherboard adjusts the storage speed in the processor, with the aid of the JEDEC or the XMP or EXPO memory profiles stored on the RAM modules. Therefore, the processor then also accesses the RAM with the storage speed set in it. This, however, only results in the memory clock. Otherwise, the RAM modules are neither self-clocked nor run independently with the set storage speed.

The processor is therefore that must run with the set storage speed and not the motherboard or any motherboard components. The RAM modules only have to be able to maintain the storage speed set in the processor, which regulates the specifications of the respective RAM modules and the BIOS/UEFI of the motherboard only has to be able to perform the settings for the desired storage speed, which is regulated in the motherboard specifications.

Therefore, it doesn’t matter what is written in the mainboard specifications, because there is not what storage speeds are guaranteed, but there is only the storage speeds tested on the mainboard, the BIOS/UEFI of the motherboard, on the memory controller in the processor, including the storage speeds that can only be achieved by overclocking the memory controller in the processor. That’s not what it says.

Storage speeds that can only be achieved with overclocking of the memory controller in the processor, which are usually characterized in the motherboard specifications as follows: (OC), (O.C.), (by A-XMP OC Mode) (EXPO)

The motherboards have been successfully tested with the storage speeds specified in the respective specifications and the RAM modules that have managed this are now also found in the Memory Support list (QVL) to the respective motherboard, but for these tests the motherboard manufacturers use specially selected engineering sample processors. Processors for the end customer market usually create these storage speeds not or only rarely and also not under warranty with the RAM modules from the memory support lists (QVL). Even with these RAM modules, the specified storage speeds are only reached when the inserted processor plays along, that is the condition.

The storage controllers in the Ryzen series 7000/8000 AM5 processors are designed for operation with up to DDR5-5200 RAM modules, when fitted with a storage bank (rank) per storage channel. This can also be read in the specifications of the respective processor.

https://www.amd.com/de/products/processors/desktops/ryzen/7000-series/amd-ryzen-7-7800x3d.html

(see under connectivity)

Max Memory Speed

2x1R GDR5-5200

2x2R GDR5-5200

4x1R – DDR5-3600

4x2R – DDR5-3600

• 2x1R – Dual Channel with 2 Single Rank (1R) RAM Module
• 2x2R – Dual Channel with 2 Dual Rank (2R) RAM Modules
• 4x1R – Dual Channel with 4 Single Rank (1R) RAM Modules
• 4x2R – Dual Channel with 4 Dual Rank (2R) RAM Modules

For storage speeds, which can then only be used with faster RAM modules, the memory controller is forcibly overclocked in the processor used, which can function, but which does not have to function.

Whether and how high the memory controller can be overclocked in a specific processor, this cannot be predicted or guaranteed in advance. The one processor creates a bit more and another somewhat less, even from the same CPU series.

With the XMP or EXPO RAM modules now behave like this: for these special RAM modules, the storage speed, from the BIOS/UEFI of the motherboard, is set automatically only with the help of the JEDEC memory profiles, according to the existing system configuration. This storage speed is only relatively low and corresponds to the actual storage speed for the XMP or EXPO RAM Modules. On standard RAM modules without XMP or EXPO support is the same until here.

The JEDEC memory profiles are stored on the RAM modules in the SPD chip (Serial Presence Detect). There are also the XMP or EXPO memory profiles. These are MEM overclocking memory profiles that need to be activated manually in the BIOS/UEFI. As a result, these special RAM modules are “overclocked” to their intended speed. In this way, higher storage speeds can be used with cheaper RAM modules.

With the help of the XMP or EXPO memory profile is thus set by the BIOS/UEFI of the motherboard, the MEM overclocking memory speed is still set in the processor. But for storage speeds that go beyond the respective processor specification, the activated XMP or EXPO not only “overclocked” the RAM modules, but also the memory controller in the processor used, but this cannot work. This is also the real cause when XMP or EXPO MEM overclocking sometimes does not work because in the case the settings by the XMP or EXPO, too much of the good for the processor.

Workaround:

In this case, the storage speed would have to be manually engaged to set the storage speed. There may also be several XMP or EXPO storage profiles available, one of which might work. Otherwise, the storage speed, with activated XMP or EXPO, can be additionally manually throttled until the processor is stable with it or the storage speed, the timings and the RAM module voltage are completely manually set. Have fun.

mfG computer tomb