Safe voltage after oc?

Toggle sidebar Toggle sidebar
F

fave

Feb 18, 2018
9
0
10
Im new to overclock, so just did probably random stuff in bios.

Should I keep this settings for x39? Or should change something...?

Im worry about vddcr voltage it sometimes spikes to 1.4 v (


I have already x38 profile with 1.243v in bios (offset -0.13125v) almost stable. Vddcr under 1.26v sometimes spikes to 1.308v.svi2-tfn around 1.213v under load. Cpu llc - medium Its should be ok

For x39 I change cpu llc to high and raise vcore. Have no problems in tests.
https://i.imgur.com/1oDypoL.jpg

Ryzen 1600x
Asus rog b350-f
Gskill flareX 3200
 
Solution
AniChatt
During overclock your goal is to find the optimum level of performance vs voltage. Since you have a 1600x overclocking it to 39x will not give you any tangible benefit in performance. If you are a content creator then the advantage will be hardy few seconds or a gamer then you may gain max 1 fps average going from stock to 39x. If you want some tangible benefit then you have to reach 40x or above which may or may not be possible as per your silicon lottery.

Now the overclocking part, first there are many overclocking guide in YouTube check those out first and never ask anybody what would be the voltage for 39x. If will be different for each piece of CPU some may achieve it at 1.35 v or another can not achieve it below 1.42 so you have...
Sort by date Sort by votes
During overclock your goal is to find the optimum level of performance vs voltage. Since you have a 1600x overclocking it to 39x will not give you any tangible benefit in performance. If you are a content creator then the advantage will be hardy few seconds or a gamer then you may gain max 1 fps average going from stock to 39x. If you want some tangible benefit then you have to reach 40x or above which may or may not be possible as per your silicon lottery.

Now the overclocking part, first there are many overclocking guide in YouTube check those out first and never ask anybody what would be the voltage for 39x. If will be different for each piece of CPU some may achieve it at 1.35 v or another can not achieve it below 1.42 so you have to find your own.

Go to bios and disable CPB first then dial 37x in multiplier and reduce the vcore to say 1.375 (d) - 0.075 = 1.30v and test if it is stable or not. After that increase the multiplier by 0.5 and increase the voltage by an increment of 0.0125 and test stability. For example say you have set 39x and your voltage is 1.375+0.0125 ~ 1.39v as bare minimum and during stress test if you found it stable then you can set it.

LLC: You may start it with medium and unless you need it don't set it high: it's purpose is it adds some voltage + with core volt to avoid vdrop.

Important: Do not set voltage to auto, it may eventually fry your cpu. For 1600x since its default voltage is high compared to 1600 so start from -ve addition fo default voltage as you don't need 1.375v default for 37x or 38x. Then step by stem make it higher.
Caution: for this mobo I think it is Strix B350f gaming do not set any voltage for 1600x 1.40 and above or your vrm will reach 80+ temp during stress test. Just set 1.40 and stress for 15 min and after shutting down PC try to touch the heat sink. I bet you that some of your skin will get attached on there if you don't believe me.

Lastly this mobo is not for super overclocking so don't try to touch 1.425v ryzen recommended max or you may reduce mobo life. And again do it for fun and don't expect to gain noticeable performance benefit since I have personally checked it but for 2560x1080 gaming.

Keep the voltage minimum possible and temp below 85C during stress test. Also if possible don't dial more than 1.40v at all cost or buy a better mobo. There are risk involved for overclock so do it on your own risk.

For my chip on this same mobo and 3803 bios,
39x at 1.375 + 0.0625 volt, CPB off, LLC regular since I don't need high. For stress test download Intel Burn Test and run it for 20 times in above standard setting. It is really fast to find instability unlike prime which takes hours.
 
Upvote 0 Downvote
Solution
Is it ok to have vddrc spikes to 1.4- 1.41 v? Its spikes like once in 15 min during stress test. Average voltage is fine, I think..

I read that I should pay attention only to svi2-tfn voltage... So average =1.29v
Can anyone explane?

Actually I never got bsod and never reset bios during oc.. Just set X39 and voltage in bios to ~1.3v
 
Upvote 0 Downvote


The spikes are there since you are using CPB on. If you are overclocking it is recommended to turn off CPB i.e. Core Performance Boost.. For all cost dial some voltage offset when you overclock I have mentioned it earlier otherwise in Auto it will apply insane voltage.
As I have mentioned turn off CPB then CPU and SOC LLC to regular then fix a multiplier and then play with Core volt and leave rest same. When you hit the sweet spot and getting system freeze it means you are just close to stability then only increse Core LLC to medium and check stability. If OK then don't increase LLC to high.

VDDcr in mobo section of HWinfo is the voltage the mobo is providing to CPU is is normally higher than svi2-tfn. This Svi2 is the volt that the cpu is using and it will vary as per core load but under similar load it will stay constant. For 1600x it will be 1.355 - 1.375 when you apply 1.40 in vddcr. What LLC core is doing it even adds some voltage to the vddcr to maintain a higher edge over Svi2 providing more volt to cpu core if cpu needs this under say for a fraction of milisecond.
This is the reason why I am recommending to leave it to regular if you can becs 4+4 power phase design is not that great to maintain less than 70C temp when you push more than 1.40v in Ryzen 6 core. I have measured it with IR thermometer and it is insanely high.
 
Upvote 0 Downvote
got random black screens at any volltage with x39 and regular llc also noticed that at x39 bus clock goes unstable. while during stress test cpu clock spikes to 3950 lol disabled cpb
at medium llc have not black screens but vddcr >1,4v sometimes ((

ok nvm will try oc later with better cooling... thank you for answers!
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom