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First Attempt/Impressions with OC on R9 3900x

 
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post #1 of 6 (permalink) Old 08-21-2019, 08:44 PM - Thread Starter
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First Attempt/Impressions with OC on R9 3900x

Decided to spend a few minutes tinkering with my 3900x tonight.
Just wanted to get 4.2Ghz all core. Kept chipping away at the voltage and figured I'd hold off here at 1.225v in bios. Haven't seen a BSOD or freeze yet so there may be more left in it.
Here are my results so far.

This is under a Noctua NH-D15 and running in a MSI MPG X570 Ggaming Pro Carbon WIFI. I also ran Realbench 2.54 (probably needs updated) for about 5 minutes, that's what got me to the 73C.

The chip came out of the box running 1.45-1.48v with the stock boost profile, which I know is dynamic and per core. Seems strange that I'm solid at 4.2Ghz all core with only 1.225v.
I'm new to Ryzen OCing, I came form an i7 5960x. Interestingly it ran a stable 4.2Ghz all core at around the same voltage lol.

Thoughts / Suggestions?
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post #2 of 6 (permalink) Old 08-21-2019, 09:01 PM
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Quote: Originally Posted by bullet937 View Post
Decided to spend a few minutes tinkering with my 3900x tonight.

Just wanted to get 4.2Ghz all core. Kept chipping away at the voltage and figured I'd hold off here at 1.225v in bios. Haven't seen a BSOD or freeze yet so there may be more left in it.

Here are my results so far.



This is under a Noctua NH-D15 and running in a MSI MPG X570 Ggaming Pro Carbon WIFI. I also ran Realbench 2.54 (probably needs updated) for about 5 minutes, that's what got me to the 73C.



The chip came out of the box running 1.45-1.48v with the stock boost profile, which I know is dynamic and per core. Seems strange that I'm solid at 4.2Ghz all core with only 1.225v.

I'm new to Ryzen OCing, I came form an i7 5960x. Interestingly it ran a stable 4.2Ghz all core at around the same voltage lol.



Thoughts / Suggestions?
Not bad, I've been running my 3900X at 4.325ghz using 1.3125vcore set in bios. Temps not too bad, this morning I decided to drop it to 4.2ghz which is stable at 1.1875vcore set in bios. Running IBT very high mem preset temps go up to 65C. Im using a Coolermaster ML240 AIO cooler.

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post #3 of 6 (permalink) Old 08-21-2019, 09:58 PM
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In a couple weeks, I'll see how well I do with B450-I strix 3900X cooled by Eisbaer 240LT.

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post #4 of 6 (permalink) Old 08-22-2019, 12:15 AM
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Quote: Originally Posted by VPII View Post
Not bad, I've been running my 3900X at 4.325ghz using 1.3125vcore set in bios. Temps not too bad, this morning I decided to drop it to 4.2ghz which is stable at 1.1875vcore set in bios. Running IBT very high mem preset temps go up to 65C. I'm using a Coolermaster ML240 AIO cooler.

Sent from my SM-G960F using Tapatalk
I'd prefer my CPU _3700x_ at 4200 Mhz _it was stable at about 1.2875v_, but c&q not working after changing the multiplier from Auto _I don't like idle at 4200Mhz_.
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post #5 of 6 (permalink) Old 08-22-2019, 03:49 AM
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Naive question : the OC speed you report is the base core speed I assume. How is boost behaving?
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post #6 of 6 (permalink) Old 08-22-2019, 03:55 AM
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Quote: Originally Posted by Jubijub View Post
Naive question : the OC speed you report is the base core speed I assume. How is boost behaving?
With manual overclock there is no boost speed.

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