[SOLVED] AMD Ryzen 3500 showing only 5 cores in windows

Conqu3rer

Reputable
Sep 30, 2015
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I recently upgraded my 1300X to a 3500. I have not re-installed windows.

My AMD Ryzen 3500 ordered 4 days ago is showing me 5 cores / 5 Threads in Windows, Device Manager and Task Manager. But in the BIOS it shows 6 cores are active, and even in Ryzen Master, it shows 6 cores. Not sure what the issue is.




Motherboard: Asus B450-A Prime
RAM: 16 GB (2x8GB DDR43000)
BIOS: Latest version 2006

Things I've tried:
1) Device manager: Uninstall the processor and the hidden devices

2) BIOS Reset

3) Ryzen Master reset
 

toniplavna

Reputable
Dec 4, 2016
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Did you check msconfig -> boot tab -> advanced options -> number of processors? (it should be unchecked)

task manager, how many logical cores does it show? 5 or 6?

Go to control panel and your system's power settings and change it to high performance

Reset CMOS

Fresh install of windows
 

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