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CPU stuck at 1550MHz after OC
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Aurumvorax View Drop Down
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    Posted: 27 Jul 2018 at 12:43am
Sorry, been on vacation and wasn't able to look into this again until today.

So I updated my BIOS to 4.80. Lot of different options now in the OC-Tab. After entering my settings I noticed that they won't be accepted any longer by the system. I can enter them without problem, but the CPU won't clock higher than the default 3.3GHz.

What am I missing here?
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Erasmus_Tycho View Drop Down
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Points: 85 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Erasmus_Tycho Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jul 2018 at 11:45pm
I had the same problem, nothing I did could fix this until I updated my bios to version 4.x.  Looking at the bios versions for your board, you need to install the 3.5 bios (bridge) and then install the latest bios.  This should fix your multiplier bug and let you get your overclock.
ASRock x370 Taichi V4.4| Ryzen 1800x | 16GB x 2 DDR4 3200 (14cas) | GTX 1080 Ti K|NGP|N | WD NVMe Black 512GB | 2 x 500GB Samsung EVO 960 | Corsair HX1000 | EK Custom Loop (360mm rad + 280mm rad)
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Aurumvorax View Drop Down
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Originally posted by Erasmus_Tycho Erasmus_Tycho wrote:

Sounds like the CPU multiplier bug... 

What board are you using, what BIOS version are you using?


ASRock X370 Gaming K4, BIOS version is 3.40
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datonyb View Drop Down
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agreed 99% sure its a cpu with the multi bug

the cure i believe was to use offset voltage
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Erasmus_Tycho View Drop Down
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Sounds like the CPU multiplier bug... 

What board are you using, what BIOS version are you using?
ASRock x370 Taichi V4.4| Ryzen 1800x | 16GB x 2 DDR4 3200 (14cas) | GTX 1080 Ti K|NGP|N | WD NVMe Black 512GB | 2 x 500GB Samsung EVO 960 | Corsair HX1000 | EK Custom Loop (360mm rad + 280mm rad)
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Aurumvorax View Drop Down
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Originally posted by gizmic gizmic wrote:

hahah i'll ask again how are you overclocking via multiplier , blclk, p-states. 

can it be CnQ? but i'm not sure if they clock that low because lowest i've seen on mine are 3ghz-ish


Overclocking via multiplier. CnQ is disabled.

Not the only one with this problem:

https://www.reddit.com/r/buildapc/comments/6fe5op/ryzen_5_1600_stuck_at_1550_when_its_set_to_3800/dihhisf
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gizmic View Drop Down
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Points: 677 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gizmic Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jul 2018 at 6:38pm
hahah i'll ask again how are you overclocking via multiplier , blclk, p-states. 

can it be CnQ? but i'm not sure if they clock that low because lowest i've seen on mine are 3ghz-ish
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Aurumvorax View Drop Down
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I think it has something to do with Idle-States. Maybe the processor is stuck in warm-up?
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Aurumvorax View Drop Down
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Originally posted by gizmic gizmic wrote:

How are you overclocking? and fire up cpu-z and find out what FSB & multiplier are set to make it 1550Mhz then you could start from there to know what strange settings that you've done to make it that way 




Overclocking via BIOS, fixed CPU Voltage and LLC on level 2.

I forgot to mention:
It's only stuck at 1550MHz for the first boot for the day. When running the system for a while at 3.7GHz, I can clock as high as 3.8GHz afterwards.
The next day the system will start again at 1550Mhz again however, unless clocked down to 3.7GHz again.
Note that no settings are changed overnight in the BIOS.
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How are you overclocking? and fire up cpu-z and find out what FSB & multiplier are set to make it 1550Mhz then you could start from there to know what strange settings that you've done to make it that way 
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