Corsair Vengeance XMP Profile Issue

chucknouwisse -  
 chucknouwisse -

Hello,

I built a PC with 2x16 GB of DDR5 that should normally run at 6000 MHz. However, when I go into my BIOS and enable the XMP profile, my PC works for a few minutes, but after about 10-15 minutes, it crashes. Sometimes I get a blue screen, sometimes I don't.

I understood that it was possible to modify the values of the XMP profile, but every time I find someone talking about it, it's on an MSI BIOS… Do you know where I might find custom XMP profiles for my RAM?

Config:

  • Motherboard: ROG Strix Z790-E Gaming WiFi
  • Processor: i9-14900KF
  • RAM: 2x16 GB DDR5 Corsair Vengeance 6000 MHz (CMH32GX5M2E6000C36)

Thank you in advance for your help!

6 réponses

flo88 Posted messages 28657 Registration date   Status Contributeur Last intervention   Ambassadeur 5 158
 

Hello

The XMP profiles (usually there is only one) are hard-coded in the RAM, the other profiles present are the JEDEC, the normal standard.

To adjust the values, you need to overclock the latencies in the BIOS (all brands),

that said, the 14900K only supports up to 5200MHz in maximum frequency, so it's normal that things go wrong with the XMP active. The only way to raise your RAM to 6000 is to overclock the memory bus of the motherboard, a risky solution....

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chucknouwisse
 

Will it work if I activate the XMP profile and only lower my RAM to 5200MHz?

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flo88 Posted messages 28657 Registration date   Status Contributeur Last intervention   Ambassadeur 5 158
 

There was a typo in my response, your processor can handle 5600 MHz natively, not 5200.

First, you should check your RAM kit's frequency table, install CPU-Z and post a screenshot of the SPD and memory tabs.


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chucknouwisse
 

https://www.noelshack.com/2024-41-1-1728305412-image-2024-10-07-145012552.png and here is the other screenshot sorry thank you for taking the time to respond to me

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Redbart Posted messages 21497 Registration date   Status Membre Last intervention   3 379
 

Hello

to be able to increase the frequency, you need to increase the timings and the voltage

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flo88 Posted messages 28657 Registration date   Status Contributeur Last intervention   Ambassadeur 5 158
 

No worries.

Your kit is unfortunately not really suited for your processor.

Your RAM is currently running at 4800mhz (2400×2), which is the maximum according to the JEDEC table; ideally, a 5800 mhz kit in XMP would have been needed.

That said, the performance is already very high, and it doesn't make a measurable difference in use.


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chucknouwisse
 

When you say a 5800mhz kit, you are talking about just 1 stick of 32GB at 5800, right? Thanks for your response, I had old DDR4 before, so not activating the XMP profile was unthinkable for me ^^

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flo88 Posted messages 28657 Registration date   Status Contributeur Last intervention   5 158 > chucknouwisse
 

A kit is two sticks.

If you really want to get the most out of the XMP feature, you should trade your 2x 16 GB 6000 kit for a 2x 16 GB 5800 kit.

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chucknouwisse > flo88 Posted messages 28657 Registration date   Status Contributeur Last intervention  
 

Thanks a lot :)

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epango Posted messages 37194 Registration date   Status Membre Last intervention   Ambassadeur 4 270
 

Hi,

If enabling the XMP profile didn't serve any purpose, it would have been removed a long time ago since it exists. There was a time when the integrated controllers in CPUs managed a maximum frequency of 2666MHz directly, but depending on the motherboards, you could use RAM modules with frequencies of 3000 or 3200MHz simply by enabling XMP on the motherboards that support it. The memory controller of the i9-14900KF handles a maximum frequency of 5600MHz. If your ASUS ROG Strix Z790-E Gaming WiFi, which is supposed to handle frequencies up to 7800MHz via overclocking, struggles to manage a frequency of 6000MHz, there is a problem, and you need to find out where the issue lies, especially since the RAM modules listed for this motherboard include models with a frequency of 6400 MHz via XMP/EXPO. Be careful when we talk about overclocking RAM, as it refers to two different things:

1) running RAM at a frequency higher than their rated value. For example, trying to run 3000MHz RAM at a frequency of 4000MHz;

2) running RAM modules at frequencies that exceed the maximum frequency handled by the memory controller integrated into the CPU.

If in the first case, some knowledge in the area is required, in the second case, it shouldn't pose any problems in principle if the components have been correctly implemented in the RAM modules and the motherboard. You just need to enable an XMP profile or, for DDR5, an EXPO profile (motherboards for AMD CPU). You should try to see if your RAM modules are causing the issue or if it's your motherboard. In the case of the motherboard, checking if a BIOS update could resolve the problem is recommended.


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flo88 Posted messages 28657 Registration date   Status Contributeur Last intervention   5 158
 

Hi epango

No one said that XMP is useless, it's just that many are fixated on it while it's merely an additional feature, nothing more.

XMP aligns with the maximum RAM frequency of the memory controller in the processor; a CPU supporting 5800 will not run RAM at 6000 with XMP.

If we want to increase the RAM frequency beyond the capabilities of the memory controller in the processor, we need to overclock by desynchronizing the memory bus from the main bus, then we can play around with the memory frequency as we wish. But that's not for everyone, which is why I systematically skip this option, not to mention the risks of crashes that can sometimes be complicated to recover from afterwards.

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chucknouwisse
 

Yet my BIOS is updated to the end of September version and when I run a memtest86 without XMP profile I have no problems. How could I check where the issue comes from according to you? Also, when I go to the QVL list of my motherboard that you provided, I don't see my RAM listed.. What I simply want is to run my sticks at the speed that was indicated on Amazon when I bought them xD

edit: I also specify that I built my PC in September, I first tried XMP on the base version of the BIOS, it didn't work, I updated to a version from the end of August, that didn't work either, and this version of the BIOS is from the end of September if I remember correctly. I updated it today..

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