Question RAM frequency downgraded after updating the BIOS ?

[hamid7508]

Hello,
I have an MSI MEG Aegis Ti5 12th Desktop PC.

After updating the BIOS to version 870, the XMP option was removed from the BIOS and the RAM frequency was downgraded to the base speed 3600MHz. Before the update it was at 4800MHz.
Is there a way to re-enable the XMP option?

 

[Lutfij]

I would try and clear the CMOS and see if that has any affect on your default ram profile in BIOS but all fingers tend to point towards the BIOS update being the cuplrit. Please be wary that downgrading the BIOS to the version prior to 870 might leave you with a bricked platform.

If you were yet within the return window, I'd have asked you to return the prebuilt and build something from the ground up since the 12th Gen Intel platform's sweet spot was with DDR4-3200MHz/3600MHz dual channel tight latencied ram kits. Even if you were on your prior ram speeds, you're leaving performance on the table.

 

[hamid7508]

Please be wary that downgrading the BIOS to the version prior to 870 might leave you with a bricked platform.

The only version available for download and installation is version 870. and there is no way to revert back to the previous version.

 

[Misgar]

After updating the BIOS to version 870, the XMP option was removed from the BIOS and the RAM frequency was downgraded to the base speed 3600MHz. Before the update it was at 4800MHz.

I believe speed guaranteed by Intel for stable operation on an Intel Gen 12 CPU running 4 DIMMs goes down from 4800MT/s to 3600MT/s. With 2 DIMMs installed, the guaranteed speed rises to 4800MT/s. This is common practice, even if not widely understood.

Any XMP/EXPO speeds above 4800MT/s you experiment with on a DDR5 system (AMD or Intel) may render your computer unstable. You're more likely to achieve hign XMP overclocks with only 2 DIMMs installed. Fit two more DIMMs and memory speeds tend to suffer.

It's possible your new BIOS has been configured for stability when it detects 4 DIMMs. I'd still expect an option to override 3600MT/s but I can't see your BIOS screens so I'm not certain. Maybe the setting has moved and is "hiding".

As an experiment, remove two DIMMs if you have 4 fitted and see if the BIOS reverts to 4800Mt/s. This would confirm my suspicion the new BIOS is tuning for stability with 4 DIMMs, because they load the CPUs IMCs more heavily.

 

[hamid7508]

It's possible your new BIOS has been configured for stability when it detects 4 DIMMs. I'd still expect an option to override 3600MT/s but I can't see your BIOS screens so I'm not certain. Maybe the setting has moved and is "hiding".

I have sent the case to MSI. I will send you a picture of the BIOS environment after receiving it.