Getting Less MultiCore Ghz on i5 13400F

[AlirezaGhanbari]

Before Updating my Bios to the latest version, the microcode X129 from intel. my i5 13400F gave me 3.88Ghz on 100% Usage without the Drop.
but since the update, I only get this speed for just like 10 to 15 sec and then it drops to 3.5Ghz or 3.2Ghz.
I checked my CPU power with AIDA64 and it goes from 89W to 35W when it clockes down. ( should I put the Voltages too? )
I have a 240MM Cooler but my CPU is around 55 to 68c on full load so I'm not terminal-limited.
I'm just worried that my CPU is cooked or not. I have tested my CPU with Benchmate and it passes just fine.

 

[Tatty_Two]

The Bios update may have messed/changed your Power Limit settings, especially possible if your new Bios has the microcode fix for 13/14 gen processors although I don't believe processors below 13/14600K's were affected.

 

[SchumannFrequency]

but since the update, I only get this speed for just like 10 to 15 sec and then it drops to 3.5Ghz or 3.2Ghz.

Below you can see the Intel 12700KF frequencies per thread on OpenBSD.

The fact that your CPU clocks back to lower frequencies after a few seconds is normal.
My BIOS already had this setting that it switches to lower frequencies after a specific number of seconds.

 

[AlirezaGhanbari]

The Bios update may have messed/changed your Power Limit settings, especially possible if your new Bios has the microcode fix for 13/14 gen processors although I don't believe processors below 13/14600K's were affected.

Hi, I'm using the default setting in bios.
are u sure because they say all of the TDP 65 and above are effected

 

[Zazigalka]

13400f is still alder lake architecture rebranded as 13th gen. I say remove all power limits and set the voltage to fixed 1.25v-1.3v or whatever the chip needs to pass as stable.

The Bios update may have messed/changed your Power Limit settings, especially possible if your new Bios has the microcode fix for 13/14 gen processors although I don't believe processors below 13/14600K's were affected.

or maybe it's the OS, aren't some microcodes pushed through windows updates ? I'd check power settings in control panel too.

 

[AlirezaGhanbari]

13400f is still alder lake architecture rebranded as 13th gen. I say remove all power limits and set the voltage to fixed 1.25v-1.3v or whatever the chip needs to pass as stable.


or maybe it's the OS, aren't some microcodes pushed through windows updates ? I'd check power settings in control panel too.

What do you mean? you mean the i5 13600K and less are based on the Alder Lake and not effected by this problem?
how about i5 13500?


can you explain it more plz.♥

 

[ShrimpBrime]

Before Updating my Bios to the latest version, the microcode X129 from intel. my i5 13400F gave me 3.88Ghz on 100% Usage without the Drop.
but since the update, I only get this speed for just like 10 to 15 sec and then it drops to 3.5Ghz or 3.2Ghz.
I checked my CPU power with AIDA64 and it goes from 89W to 35W when it clockes down. ( should I put the Voltages too? )
I have a 240MM Cooler but my CPU is around 55 to 68c on full load so I'm not terminal-limited.
I'm just worried that my CPU is cooked or not. I have tested my CPU with Benchmate and it passes just fine.

Asking if you clear RTC after the bios flash or did you just post straight to windows.....

Set windows power plan to defaults as you read this....

Shut down the PC fully, turn off PSU.
Using a jumper, Clear RTC (cmos jumpers) 30 seconds.
Remove the jumper. Turn on PSU.
Start bios, go to settings, set all defaults.
F10 Restart
Enter Bios, configure your memory only (XMP/DOCP enabled only). Do not touch any Cpu settings otherwise.
F10 restart Enter windows and test again.
If you change windows power plans, I suggest a restart of the PC after the change is made.

My thoughts. 2 bits a gander.
GL