DDR5 memory problem

[gduo]

Hello

 

first of all I apologize for my language mistakes, English is not my native language.

Since assembling the computer (a few months ago) I had problems with G.Skill RAM (G.Skill Trident F5-6000U3636E16GX2-TZ5K 32GB). It is about the XMP profile after enabling it in the BIOS. As long as the profile is disabled or the profile is enabled but forced "DRAM Frequency" to less than DDR5-6000MTs (5800, 5600), the computer works ok.
However, when XMP1 or XMP2 (DDR5-6000MTs) is enabled, BSODs appear immediately, the browser crashes by itself.

The system also does not pass the stability test (system stress memory) in AIDA64 (the test stops after several seconds) (with DDR5-6000MTs always, with DDR5-5800MTs not always). The PRIME95 program also stops the torture test.
Is it normal for the system to become unstable when the XMP profile is on? Or should the memory work stably to the maximum settings to which the memory has been adapted?

 

Thanks

 

PS: 

1. system specification is in my profile

2. system overclocking is disabled 

 

[Ryuikko]

Do you have 4 sticks of ram or 2? What's your cpu?

[gduo]

2 sticks

i5-12600K

 

 

 

 

[Guest]

Update the bios. 

[gduo]

11 hours ago, Guest 5150 said:

Update the bios. 

my post referred to the latest BIOS version (1720)

[Guest]

3 hours ago, gduo said:

my post referred to the latest BIOS version (1720)

I did not see that information, my apologies.

 

It's the board, not the cpu or ram. 4 slot boards, most of them are not capable 6000mhz or faster. Mine is the same way.

[gduo]

Really??

Quote

 

4 x DIMM, Max. 128GB, DDR5 6400+(OC)/ 6200(OC)/ 6000(OC)/ 5800(OC)/ 5600(OC)/ 5400(OC)/ 5200(OC)/5000(OC)/4800 Non-ECC, Un-buffered Memory*

  

Dual Channel Memory Architecture

 

Supports Intel® Extreme Memory Profile (XMP)

 

OptiMem III

 

*Supported memory types, data rate(Speed), and number of DRAM module vary depending on the CPU and memory configuration, for more information refer to www.asus.com for memory support list.

 

[Guest]

5 minutes ago, gduo said:

Really??

 

Yeah... really.

 

It's kind of a known thing, look it up. 

[gduo]

If anyone is interested in it, I reported the problem to G. Skill (Europe). Technical support suggested to send the memory back for warranty and after less than a month I got new chips. I check them out the first day, but it seems to be fine now.

[Guest]

On 8/28/2022 at 1:48 PM, Guest said:

I did not see that information, my apologies.

 

It's the board, not the cpu or ram. 4 slot boards, most of them are not capable 6000mhz or faster. Mine is the same way.

Agree. My board is the same. 

 

Even though the boards might advertise up to 6400mhz, if you look at their specs closer, they only say you'll get those speeds with a single stick.

 

As soon as you go to 2 sticks the max frequency is less. My board (msi z690 pro a wifi ddr5) says 1 stick upto 6400, 2 sticks up to 6000 (but in my experience, 5800 is stable, 6000 still isn't), and 4 sticks I think upto 5400.

 

Remember also that the speeds are always advertised as "upto" a certain frequency.... and that xmp is still an overclock of sorts, so there's no guarantee that the advertised speed will be stable on all boards.

 

The difference in performance between 5800 and 6000 is probably very minor anyway.... and you can probably get great performance still by changing the other timings. 

 

Check out buildzoid on YouTube too, he's got some great videos talking about ram timings, how they all work and why it's definitely not as simple as just looking at frequency and cas latency setting. Following one of his videos for the chip type of my ram, I managed to get latency lower at 5800 with his settings than it was at 6000/6400 with xmp settings/profiles.

 

Your ram probably isn't at fault though, it's just the way that things are, especially with ddr5, the more sticks/ channels you use, the lower the frequency that'll be stable.

 

Wish I'd understood that before I splurged out on 6400cl32 ram, but hey ho. 5800cl30 with buildzoid sub timings is performing really well, a lot better than just leaving things at stock values (4800cl40!!!)

::EDIT::

 

Found out that I was slightly mis-understanding the specs of the mobo and getting confused about terminology, such as DPC, RANK, CHANNEL, SLOTS, etc.....

 

had a much better explanation on the msi forums

 

MSI PRO Z690-A DDR5 6400MHz latest update? | MSI Global English Forum - Index

 

Although, even though the board supports upto 6400, 5800 is still as high as I can go and stay stable....and is still very good.

 

Apparently, 13th gen CPU's will handle higher speeds better though.