CPU Core VERY LOW voltage

[Mikey89]

Hello

 

So i was using AIDA64 Extreme earlier and i noticed that my CPU Core voltage varies VERY MUCH.

 

It's from like 1.0V to 0.870V to 0.500V to even 0.250V. Keeps going backwards and upwards but with this type of variety, this is on idle.

 

Is this normal, i mean so much variation ??

 

I'm using an Ryzen 5 3600, would greatly appreciate some info on this.

[Chris Pratt]

Not sure where you're getting the numbers, but software reporting is often inaccurate. However, unless you feel like the performance is compromised, it's nothing to worry about in any case. Running low voltage with the same performance is the dream. The problem is normally not being able to safely push enough voltage into it to scale the performance higher.

[Mikey89]

11 minutes ago, Chris Pratt said:

Not sure where you're getting the numbers, but software reporting is often inaccurate. However, unless you feel like the performance is compromised, it's nothing to worry about in any case. Running low voltage with the same performance is the dream. The problem is normally not being able to safely push enough voltage into it to scale the performance higher.

@Chris Pratt

 

But isn't 0.400 or 0.330V considered too low ?

 

It's not often but it fluctuates... it kinda rarely goes so low but it does go sometimes.

 

Using AIDA64 Extreme.

[Chris Pratt]

46 minutes ago, Mikey89 said:

@Chris Pratt

 

But isn't 0.400 or 0.330V considered too low ?

 

It's not often but it fluctuates... it kinda rarely goes so low but it does go sometimes.

 

Using AIDA64 Extreme.

Again, it can't technically be too low. The question is: is it impacting your performance? If not, then don't worry about it.

[Mikey89]

6 minutes ago, Chris Pratt said:

Again, it can't technically be too low. The question is: is it impacting your performance? If not, then don't worry about it.

It's not affecting my performance but what is considered too low ?

 

Is 0.330 or 0.430V considered too low ?

[Chris Pratt]

6 minutes ago, Mikey89 said:

It's not affecting my performance but what is considered too low ?

 

Is 0.330 or 0.430V considered too low ?

Dude. For the 10th time, there is no such thing as "too low". The goal of the entire PC component industry is to get the most performance out of the lowest voltage. Voltage is something you increase because you *have* to.

 

Don't worry about the voltages. It literally does not matter at all. The only thing that matters is your performance. Period. If you were getting bad performance, voltage might be something to look at as a cause, but if your performance is fine, you're fine.

 

[Mark Kaine]

1 hour ago, Chris Pratt said:

Again, it can't technically be too low.

One problem i really have with AMD is their documentation about Ryzen CPUs… if you look up "specs" you arent getting anything on the AMD site (very little) except marketing  bs.

 

Theyre definitely not the only one doing this but one of the worst offenders for sure.

 

 

However:

 

 

 

Its not like they dont know, they just dont communicate it well, and thus sometimes appear as they dont know, and its just bad business practice to hide such information in random reddit threads of all things (which they do repeatedly)

 

 

 

I mean they explain it well *here* but whats the point when most of their customers will never read this… 

 

 

[Mikey89]

1 minute ago, Mark Kaine said:

One problem i really have with AMD is their documentation about Ryzen CPUs… if you look up "specs" you arent getting anything on the AMD site (very little) except marketing  bs.

 

Theyre definitely not the only one doing this but one of the worst offenders for sure.

 

 

However:

 

 

 

Its not like they dont know, they just dont communicate it well, and thus sometimes appear as they dont know, and its just bad business practice to hide such information in random reddit threads of all things (which they do repeatedly)

 

 

 

I mean they explain it well *here* but whats the point when most of their customers will never read this… 

 

 

@Mark Kaine

 

HOLY CRAP that's spot on.

 

I was watching earlier with AIDA64 and i even got as low as 0.210V but it varies and then goes up to 1.0V. It doesn't stay fixed but it always varries from 1.0 to 0.9 to 0.4 to 0.8 to 0.3 etc

 

But is this normal though ??

[Guest]

2 minutes ago, Mikey89 said:

@Mark Kaine

 

HOLY CRAP that's spot on.

 

I was watching earlier with AIDA64 and i even got as low as 0.210V but it varies and then goes up to 1.0V. It doesn't stay fixed but it always varries from 1.0 to 0.9 to 0.4 to 0.8 to 0.3 etc

 

But is this normal though ??

It's normal.

 

Called P-states in short for Power States generally during idle and light usage, v-core can go as low as .20v while some threads will be parked/gated. 

 

Every reading you see visually happened around 1000ms ago as well. They are not real time readings.

 

 

[Mikey89]

12 minutes ago, ShrimpBrime said:

It's normal.

 

Called P-states in short for Power States generally during idle and light usage, v-core can go as low as .20v while some threads will be parked/gated. 

 

Every reading you see visually happened around 1000ms ago as well. They are not real time readings.

 

 

Thanks for clearing it up... was hoping it wouldn't drop extremely low and make my PC hang.

 

I read on the web that if voltage is too low it might cause PC to hang or freeze.

[Mark Kaine]

1 hour ago, Mikey89 said:

read on the web that if voltage is too low it might cause PC to hang or freeze.

it can, but if your pc doesnt crash there is no problem.

 

 

[Gohardgrandpa]

This is the first time I've ever seen someone post about low CPU voltage, let alone not having any issues. 

 

I think software reporting voltage on Ryzen is bugged. Every Ryzen CPU I've used has shown voltage bouncing around like crazy

[freeagent]

I think its pretty normal.. It seemed a little more erratic on Zen 2 vs 3.

 

Highs and lows..

 

[Gohardgrandpa]

14 minutes ago, freeagent said:

I think its pretty normal.. It seemed a little more erratic on Zen 2 vs 3.

 

Highs and lows..

 

The highest recorded is what always got me. 1.5v is crazy high, but it's never like that for long. 

[Mikey89]

10 minutes ago, Gohardgrandpa said:

The highest recorded is what always got me. 1.5v is crazy high, but it's never like that for long. 

I was in Predator Hunting Grounds earlier and was getting 1.4v if i remember right.

 

I checked with AIDA64 just outta curiosity to see how much i was getting while gaming.

[Mikey89]

27 minutes ago, freeagent said:

I think its pretty normal.. It seemed a little more erratic on Zen 2 vs 3.

 

Highs and lows..

 

Crazy how it can fluctuate from 0.2 and reach 1.5v

[Gohardgrandpa]

Yeah idk if it's a software bug or if it's actually hitting that high sure a very short amount of time. 

Every Ryzen system I've built has done that voltage crap. Ryzen 3600, 3700x, 3900x, I just quit looking at it since nothing ever went wrong 

[freeagent]

Oh yeah its hitting that high, I have seen 1.53 all on its own lol.. she's thirsty

 

Edit:

 

I am pretty sure I saw 1.55 from my old 3600XT..

[Mikey89]

On 7/25/2021 at 2:04 AM, freeagent said:

Oh yeah its hitting that high, I have seen 1.53 all on its own lol.. she's thirsty

 

Edit:

 

I am pretty sure I saw 1.55 from my old 3600XT..

Why would AMD allow for such high voltage fluctuation though ?

[freeagent]

Just now, Mikey89 said:

Why would AMD allow for such high voltage fluctuation though ?

To drive the top clocks, there is almost no amperage behind it. If you set 1.5v in bios it would be a very different story.