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Ryzen 3700x safe volts and good OC @4.5GHZ now all cores

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post #1 of 11 (permalink) Old 04-29-2020, 12:25 PM - Thread Starter
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Ryzen 3700x safe volts and good OC @4.5GHZ now all cores

Hi all just got a 3700x today and I'm playing around with OCing "like we do"
What would be a good all core OC?
And how high can I pushed the Volts, max temps so far are around 65c full load, ty

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post #2 of 11 (permalink) Old 04-29-2020, 12:47 PM
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Around 1.35V

If you can get 4.4GHz stable with that, you're as golden as your chip is.

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post #3 of 11 (permalink) Old 04-29-2020, 01:32 PM - Thread Starter
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Quote: Originally Posted by rares495 View Post
Around 1.35V

If you can get 4.4GHz stable with that, you're as golden as your chip is.
Haven't really had much time to do prolonged tests but can complete both cinebenches R15/R20 at those settings "I set it like that just to see lol"
So you're saying dont go over 1.35v? Temps haven't gone over 65c yet though which seems safe to me lol

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post #4 of 11 (permalink) Old 04-29-2020, 01:42 PM
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Quote: Originally Posted by CorpussStalker View Post
Haven't really had much time to do prolonged tests but can complete both cinebenches R15/R20 at those settings "I set it like that just to see lol"
So you're saying dont go over 1.35v? Temps haven't gone over 65c yet though which seems safe to me lol
Ryzen 3000 chips are waaaay more sensitive than any other CPUs. Especially to voltage. Temps are a side issue.

For some chips not even 1.325V is 100% safe. You can check what's safe for your CPU by enabling PBO in the bios then firing up Prime95 with a custom 128K FFT setting. Let it run for a few minutes while monitoring the voltage in HWInfo (CPU Core Voltage SVI2 TFN)

The lowest voltage in there is your safe static overclock voltage. The way you achieve that is with a higher vcore and an LLC setting that's just right, meaning the vdroop in prime95 w/ static OC should reach that vdroop 128K voltage from PBO.

Let me know if all this is too much.

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Last edited by rares495; 04-29-2020 at 01:49 PM.
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post #5 of 11 (permalink) Old 04-29-2020, 01:52 PM - Thread Starter
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Quote: Originally Posted by rares495 View Post
Ryzen 3000 chips are waaaay more sensitive than any other CPUs. Especially to voltage. Temps are a side issue.

For some chips not even 1.325V is 100% safe. You can check what's safe for your CPU by enabling PBO in the bios then firing up Prime95 with a custom 128K FFT setting. Let it run for a few minutes while monitoring the voltage in HWInfo (CPU Core Voltage SVI2 TFN)

The lowest voltage in there is your safe static overclock voltage. The way you achieve that is with a higher vcore and an LLC setting that's just right, meaning the vdroop in prime95 w/ static OC should reach that vdroop 128K voltage from PBO.

Let me know if all this is too much.
Dont they have weird fluctuations though anyway? like up to crazy temps? Well that's what I noticed when I started lol

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post #6 of 11 (permalink) Old 04-29-2020, 01:56 PM
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Quote: Originally Posted by CorpussStalker View Post
Dont they have weird fluctuations though anyway? like up to crazy temps? Well that's what I noticed when I started lol
The thing is they are different from your regular CPU. Temps spike like that because of the crazy idle voltages:


Low current loads(0-20A) => High voltage (up to 1.5V) and high boost frequencies - idle at the desktop, browsing the web etc.

High current loads(60+ A) => Low voltage (1.0-1.2V) and lower frequencies - games, video editing, stresstests

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post #7 of 11 (permalink) Old 04-29-2020, 02:09 PM - Thread Starter
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Quote: Originally Posted by rares495 View Post
The thing is they are different from your regular CPU. Temps spike like that because of the crazy idle voltages:


Low current loads(0-20A) => High voltage (up to 1.5V) and high boost frequencies - idle at the desktop, browsing the web etc.

High current loads(60+ A) => Low voltage (1.0-1.2V) and lower frequencies - games, video editing, stresstests
Nice info man, been away for a while from AMD, good to get knowledge, ty

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post #8 of 11 (permalink) Old 04-29-2020, 02:17 PM
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Quote: Originally Posted by CorpussStalker View Post
Nice info man, been away for a while from AMD, good to get knowledge, ty
Don't mention it.

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post #9 of 11 (permalink) Old 07-23-2020, 07:21 AM
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custom 128K FFT setting.
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post #10 of 11 (permalink) Old 07-23-2020, 07:25 AM
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Quote: Originally Posted by rares495 View Post
You can check what's safe for your CPU by enabling PBO in the bios then firing up Prime95 with a custom 128K FFT setting. Let it run for a few minutes while monitoring the voltage in HWInfo (CPU Core Voltage SVI2 TFN)

The lowest voltage in there is your safe static overclock voltage. The way you achieve that is with a higher vcore and an LLC setting that's just right, meaning the vdroop in prime95 w/ static OC should reach that vdroop 128K voltage from PBO.

Hi,

I'm trying to run the custom 128K test on Prime95, but I would like to know the specific settings I need to set the test to? Sorry, I'm a bit of a noob.
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