CPU voltage spike?

[Highborn]

Hey guyz!
I have a few questions if you don't mind.
Today morning, my computer started beeping, when booting. It beeps three times, then reboots, and everything is fine and dandy. Now i figured that it has some problem with my keyboard so shm. The other thing is while i was at it, i redid my cable management, and porperly plugged in fans (yes, the guy who did it at the service fucked something so basic up smh 2.0). Now what i realized that my fan speed is going up and down and up and down. Checking it in ryzen master, sometimes randomly spikes up to 1,45 volts for no reason. Any tipps? Why does it do this? Oh, MSI x370 Gaming Pro Carbon with r7 1700x
https://drive.google.com/file/d/1mknfucrFcETirq6fgsQbb8dBdNnlr7Eu/view
Here are my bios settings.


Is this normal that idling, the temps so the fan curve is fluctuating?

Edit: hitting it with cpu-z makes the vcore rock solid stable. Just what the f....
edit2: okey i just set a waaay too aggressive fancurve(lol), but i'm still concerned about the vcore fluctuation.

[WallacEngineering]

31 minutes ago, Highborn said:

Hey guyz!
-SNIP-

So I just got done building my R5 1600X system myself.

 

So upon starting over clocking proceedings I noticed this as well. Before I even began, stock voltage would spike to 1.45 at times and yes it is normal for any 95W TDP Ryzen chip.

 

However, you can correct this by doing some OC yourself. For example, when I set my Dynamic VCore to "Normal" (+0.00V) at stock frequency and then reboot, I now see it only run at 1.20 - 1.25V spikes on my Gigabyte AB350 Gaming 3 Rev 1.0 MotherBoard.

 

Im now running fully stable (stressed for 2+ hours) 3.975GHz on all 12 threads @1.392V SAFE daily OC and only hit a max temp of 68C on the CPU Die and 86C on the VRMs.

[Highborn]

oh! thanks for the heads up man! according to HWinfo the max was 1.519V. I've never actually paid any attention to this, but if it's normal than i should not mind. Thanks mate

[WallacEngineering]

16 minutes ago, Highborn said:

oh! thanks for the heads up man! according to HWinfo the max was 1.519V. I've never actually paid any attention to this, but if it's normal than i should not mind. Thanks mate

No problem, but I would go ahead and manually set your VCore voltage. Theres no need to run at 1.45V if its not doing anything for you. 1.45V can actually degrade CPU lifespan if it sits that high all the time.

 

Are you running HWiNFO64 then? Its voltage readouts seem accurate to me as I get 1.392V avg on VCore under the motherboard settings. This is the voltage you should be looking at. If you are really hitting 1.5V+ then it is very important that you manually adjust the voltage settings or you could kill your CPU (<1.40V is safe, ~1.45V is absolute max, 1.50V+ considered dangerous)

 

[Highborn]

here is what HW spits out. It's during browsing fb, and youtube. I'll put some stressing with cpu-z in a minute.

[WallacEngineering]

3 minutes ago, Highborn said:

here is what HW spits out. It's during browsing fb, and youtube. I'll put some stressing with cpu-z in a minute.

Well your settings seem ok at low load/idle. 1.400V is not anything to worry about. I updated the picture in my last post with a modification so you can see where you should be looking.

[Highborn]

I did a brief stress test with cpu-z. Temps will be good, i did a 15 min stress test didn't hit 60c not even 57.
As you can clearly see, when the stress started the Vcore became a near flat line
also, edited in my vcore

[WallacEngineering]

11 minutes ago, Highborn said:

I did a brief stress test with cpu-z. Temps will be good, i did a 15 min stress test didn't hit 60c not even 57.
As you can clearly see, when the stress started the Vcore became a near flat line
also, edited in my vcore

Ok so it seems OK but you are starting to reach a bit high under load. 1.440V is just a teeny bit worrying.

 

If I were you, personally, I would set up some OC settings. You can get the same ~3.9 - 4.0GHz that I do at under 1.400V. Pretty much all Ryzen 5 and 7 1st Gen chips hit the same speed limits at the same voltages unless you have severely won or lost the silicon lottery. So this would actually mean less stress on your CPU than you currently have (less voltage) and more speed at the same time. The only thing you should see go up is heat (Focus on Tdie readout).

 

Try setting Voltage manually anywhere in the 1.30V - 1.39V  range in your BIOS and see how far you can get those frequencies on a safe voltage that wont degarde your CPU over time

[Highborn]

thanks. Tbh i'm a bit scared of fiddling with voltage settings. It's not like setting the hbm slider to 1100 on my vega.... i'll try to set vcore to 1,35 and see what'll happen

[WallacEngineering]

1 minute ago, Highborn said:

thanks. Tbh i'm a bit scared of fiddling with voltage settings. It's not like setting the hbm slider to 1100 on my vega.... i'll try to set vcore to 1,35 and see what'll happen

Its ok, nothing to be scared of. If anything you are helping your CPU. Less voltage is ALWAYS a positive thing. Voltage is what kills CPUs

 

Just be sure to check readouts on HWiNFO64 under full load. If they are accurate to what you set, then increase frequency until you crash. No worries, crashing doesnt harm your hardware :).

[Highborn]

is cpu z a good enough stress test?
edit: downloaded aida64

 

[WallacEngineering]

-SNIP-

[WallacEngineering]

35 minutes ago, Highborn said:

is cpu z a good enough stress test?
edit: downloaded aida64

 

Its OK but I recommend Intel Burn test or Prime 95. Both are excellent and totally free :).

 

AIDA64 is also awesome  in fact its the very best but it costs money after 30 days (trial)

 

To determine if your settings are truly stable:

 

Run Prime95 for 15 mins. If no crashes, then you can either up your frequency or lower voltage based on your preference. Lower voltage = less heat and more longevity, more speed = more heat but a faster system.

 

Since you seem to be new to this, here are some basic rules:

 

1.38V should be your maximum voltage target. It will give you good longevity plus a nice speed of 3.8-4.0 GHz. Maximum Tdie Temp is 80C but this is pushing it so 75C or less is recommended. If you can keep it under 70C then then that is just perfect :).

 

If targeting low heat and maximum CPU life, then your lowest CPU speed target should be around 3.5-3.6GHz if that is fast enough for you. You should be able to set the voltage as low as 1.15 - 1.25V at such low settings which would leat to a CPU that barely even gets warm and could last for like 20+ years lol. Any temp below 65C max is considered phenomenal as anyone would tell you that you have plenty of thermal headroom.

 

Once you have decided upon your setting and you have passed the 15 min test, its time to move on to the longer test. Change your Windows "Sleep" settings to never turn off the screen or go to sleep. These interrupt the testing process. You want to stress test for a minimum of 1 hour and you do not want to use your computer during this time. 2-3 hours is recommended. If you can pass the 2 hour mark without a crash, then you are considered rock-solid stable.

 

BE ABSOLUTELY SURE TO CHECK VOLTAGE IN BIOS. BIOS IS MORE ACCURATE THAN ANY SOFTWARE!

 

Have fun and remember, crashing doesnt affect your hardware, only extreme 1.50V+ VCore and extreme 80C+ Tdie temps will harm your CPU, and even then it takes months of running at these settings to actually kill it. There are numerous failsafes built into motherboards and CPUs that will simply force them to crash, blue-screen or power-off before damage is done, so overclocking isn't so terrifying anymore

 

EDIT: You can think of Overclocking and Underclocking as the same as Turbo Charging your car or driving it more slowly. Turbo Charging makes you go faster but your engine will run hotter and not last as long, where as driving slower will mean increased engine life and less heat.

[WallacEngineering]

@Highborn So how is it coming along man, come up with some settings that you like?