Question Ryzen 3 1300X one core is slow

Jan 15, 2019
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I have a ryzen 1300x overclocked to 4ghz and half the time I start my pc one core will run slow so when im playing games 3 of the 4 cores are at 100% while the other is stuck at about 50% which is showing in some games. I've googled this and I haven't found anything so help is very appreciated. According to hw monitor the first 3 cores are at 3990mhz and the other is at 1774mhz with temps around 25C this happens when running the cpu-z stress test too. I’m just wondering what is going on and how to fix it.


Ryzen 3 1300X at 4GHz @~1.41v
2x4GB Corsair Vengeance lpx 3000mhz ram
asrock x370 killer sli
 
Last edited:

bmacsys

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Jul 4, 2013
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I have a ryzen 1300x overclocked to 4ghz and half the time I start my pc one core will run slow so when im playing games 3 of the 4 cores are at 100% while the other is stuck at about 50% which is showing in some games. I've googled this and I haven't found anything so help is very appreciated. According to hw monitor the first 3 cores are at 3990mhz and the other is at 1774mhz with temps around 25C this happens when running the cpu-z stress test too. I’m just wondering what is going on and how to fix it.


Ryzen 3 1300X at 4GHz @~1.41v
2x4GB Corsair Vengeance lpx 3000mhz ram
asrock x370 killer sli
Try running Prime95 and see what happens. Your overclock may not be stable. Your vcore may be too low.
 

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