Processors

[youngsmeagol]

MOBO: ASRock B450M PRO4 Micro ATX AM4 Motherboard
CPU: AMD Ryzen 5 1600 3.2 GHz 6-Core Processor (YD1600BBAFBOX)
RAM: G.Skill Aegis 16 GB (2 x 8 GB) XMP Profile DDR4-3000 Memory
GPU: Asus GeForce GTX 1660 Ti 6 GB TUF OC Video Card
Boot Drive: SanDisk SSD PLUS 480 GB 2.5" Solid State Drive
Second Drive: Seagate Barracuda 2 TB 3.5" 7200RPM Internal Hard Drive
PSU: EVGA 500 W 80+ Bronze Certified ATX Power Supply

Each time I "cold boot" the PC the processor throttles to just 0.54 ghz. Then when I restart the processor works just fine. I have to keep doing this over and over just to use my PC.

I haven't done any overclocking, I left everything at stock speeds except for the ram which had an XMP profile.

Another user on 12nm Ryzen with the same problem:
https://community.amd.com/thread/235961

[black_zion]

Have you fully updated the motherboard's BIOS and Windows 10?

[youngsmeagol]

Yes, I updated to the latest bios and updated Windows 10. The processor seems like it's stuck before I even get into Windows. Is there anyway for me to check the CPU speeds before I get to Windows?

[eliveltonz]

O meu também tem dado e eu uso ryzen 5 2600, não sei se é um problema dos procesadores ou é as placas mães que tem esse problema a minha á uma biostar e tenho mantido o contato com a fabricante, mas até agora sem solução. o meu da problema muito esporadito, quase de 2 em 2 semanas, e sempre quando o pc está em em carga baixa de tarefas e nunca em alta, isso é o mais estranho.

Conseguiu resolver o seu? eu tenho quase certeza que isso é problema de bios mas, não resolvem. como é esporádico vou trocar de placa mãe para  ver se resolve.

[multivalve]

youngsmeagol‌

I'm having the same issue with a new box with the following specs:

Motherboard: ASUS Prime X570-P Latest BIOS installed.
CPU: AMD Ryzen 5 3600 6 CORES
Video Card: MSI GEForce GTX

Memory: Vengeance LPX DDR4 CMK16GX4M2B3200C16 3200Mhz(2133Mhz reported by motherboard) 2*8GB 1.35V

OS: Windows 10 Prof/Ubuntu 20

It doesn't matter how many I restart the system, the CPU gets stuck in .51 or .54 Mhz.  I've done a lot of things, including installing Ubuntu as a second OS, but it has the same behavior.  So this is not an OS problem rather a CPU or motherboard one.

Did you find a real solution to deal with the AMD processor?

[misterj]

multivalve, please open a new thread.

If you have not done a Clear CMOS, please do. Thanks and enjoy, John.

EDIT: Some newer mainboards have a Slow Mode switch. If yours does, please make sure it is off.

[unleashedtriumph]

Hello people.

Ive had this same problem. It boiled down to a faulty overtemperature switch on the motherboard.

I bought a new one and never had this issue again.

[kaiqueluna]

Oi amigo, você sabe qual o interruptor que causa esse problema ?

[kaiqueluna]

O meu 

Ryzen 5 1600 af, placa mae steel legend b450M

mesmo problema do clock, inicio com 0,54 e ao reiniciar o PC, ele volta normalmente , não aparecendo mais o problema. 

[misterj]

kaiqueluna, this is an English only user forum. Please translate your posts to English. Please open a new post for your problem. Thanks, John.