Asus ROG Strix Z790-f GAMING Wifi II, Bios, XMP

[MadMaxG60]

Bonsoir,

J’ai un souci depuis que j’ai ajouté de la mémoire, pourtant identique aux premières.

Ma gonfig :

ROG STRIX Z790-F Gaming Wifi II

Intel 14900 KF

Corsair 4x24 Gb 7200 (D548GB 7200-36 Dominator Titanium bk K2),  (CMP48GX5M2X7200C36W, Dominator Titanium RGB, XMP)

Samsung SSD 970 EVO Plus 2to , 2x

Windows 11, 64bits

Bios actuel 1602,

J’avais d’abord placé 2 barrettes 2x24, et je n’avais pas de souci pour activer le XMP

J’ai placé il a un mois 2 supplémentaires, au début cela a fonctionné et puis a commencé à planter.

J’ai fait plusieurs mise a jour le BIOS, ici c’est la dernier version beta, et je ne sais toujours pas activer le XMP, max 4200 au lieu de 7200 (voir 7400 proposé)

J’avais regardé les Spécifications avant d’acheter la carte sur le site de mon fournisseur et la carte mère était certifié pour accepter jusque 8000.

Que dois-je faire ?

D’avance merci pour vos conseille

[MadMaxG60]

Bonjour, j'ai installé hier la mise a jour du bios , version 1703 et rien ne change....

que faire?

Merci

[Nate152]

Hello MadMaxG60

You're combining two memory kits which is not recommended.

Try one memory kit in the A2-B2 slots (2nd and 4th slots from the cpu) and see how it goes.

Manual tuning may be needed for high speed memory kits.

[MadMaxG60]

Hello Nate152,
Thank you for your reply.
Originally I had placed 2x24GB as you wrote to me.
This worked very well, in XMP1 and 2 without any problems.
I bought the same identical kit and when I placed it, it worked, then it started to crash in FH5....
then since then no way to configure them in the BIOS.
I have to admit that I did the same thing in the past, going from 64 to 128 in DDR4, and I had no problems....
I took this DDR5 model for peace of mind for so long.

[inge70]

According to the vendor list for your motherboard, the RAM is only supported with 2 modules at 7200MT/s.

With 4 modules from 2 kits (even if the kids are identical) it can work, but it doesn't have to.
In your case it doesn't work, at least not with XMP.
And without XMP the RAMs only run at 4200MT/s because they are fully equipped.
It's a matter of luck whether the full configuration works with XMP. Usually it won't work at 7200MT/s and faster.
See screenshot to see what is actually supported with 4 modules. So 1 kit with 4 modules and not 2 kits with 2 modules each:

You can select exactly what you want on the website for your motherboard. So manufacturer, speed, supported slots (socket support).

PS:
I also use 4 RAM modules from 2 kids, which are also absolutely identical, but they are RAMs with max. 5600MT/s and they run for me with XMP and without errors in Memtest86 etc., even though there are 2 kits with 2x 16GB each.

[MadMaxG60]

Merci beaucoup de votre réponse, 

je m'étais malheureusement fié a la page caractéristique. 

Mais vous avez raison maintenant que je regarde l'autre page ... 

Dés lors je ne trouve aucune compatibilité de mémoire qui permettrais de placer 192go a 8000 ...

Pensez vous qu'il est possible qu'il y aurais des mises a jour futur du Bios qui permettrais cette combinaison de mémoire?

encore merci de votre réponse.

Paride

[inge70]

The information on the website about your mainboard, which you show via screenshot, is correct.
Your mainboard has 4 RAM slots and supports a maximum of 192GB.
But that doesn't mean that 4 RAM modules will run at 8000MT/s. This information about the speed of the RAM modules does not refer to the number of RAM modules used, but rather that such modules can be installed. This information does not say whether they will run as expected, depending on whether you use 2 or 4 modules.
I don't think there will be a UEFI update in the near future that will allow 4 RAM modules to run at 8000MT/s. Unlikely.
They also have to be supplied with power, etc.

Currently, 4x48 GB RAM modules (from 1 kit) up to a maximum of 5200 MT/s are supported for your mainboard.
If you want less RAM, e.g. 4x 32 GB RAMs with a maximum of 5600MT/s are supported.
If you only use 2 modules, you can get more speed.
This is exactly what Asus describes on its website and also in the support area (where you can download drivers, etc.) in the vendor list for your motherboard.

[MadMaxG60]

Merci Inge70,

Je me suis fais avoir par moi même, je pensais avoir bien fais , mais j'ai oublié de vérifier les combinaison possible....

Il est vrai que si j'en retire 2 , cela fonctionne extrêmement bien, d'ailleurs le XMP me propose 2 solutions , 7200 et 7400 ... 

Normalement avec 48 j'en ai suffisamment,  mais voila , je voulais me caser pour un bout de temps et j'ai commit l'erreur....

Encore merci pour votre retour 🙂 

[Silent_Scone]

Hi @MadMaxG60 

Key Points on Why Not to Combine Memory Kits:

Mismatched Timings and Density:

• Memory vendors bin kits at specific densities.

• Combining kits for higher density invalidates programmed timings, leading to potential issues.

Troubleshooting Challenges:

• If rated timings fail, tuning the system manually becomes necessary.

• Manually tuning with combined or mixed kits requires a deep understanding of memory timings, posing challenges and technical considerations that are difficult to simplify if not experienced in memory overclocking.

Time-Consuming Tuning Process:

• Tuning memory settings demands significant time, a systematic approach, and patience.

• Lack of knowledge of memory timings complicates the tuning process.

Recommendation for Simplicity:

• Purchase a single, compatible memory kit which is one to three frequency bins below the maximum validated speed on the QVL for a smoother experience.
  
  Best of luck.

[MadMaxG60]

Merci  Scone silencieux      

superbe explication, très clair, j'en prend bonne note.

Je me pose maintenant la question de savoir si j'en retire 48 pour revenir a 48 et 7200 ou si je laisse les 96 qui sont bridée a 4200mhz.

sur le benchmark , je perd un peux de perf , mais honnêtement mon pc turbine vraiment bien.

est il intéressant de changer par des kit 4x compatible et être a 5200 voir 5600 ....

est ce que le gain sera au rendez vous....

en tous les cas , merci a tous , vous êtes géniaux 🙂