AMD Ryzen 7000 Series Processor Seen Running MSI MAG B650 Motherboard at 1.5 Volts

Having high voltage doesn't necessarily mean high power consumption. It's just one part of the equation.

P = V × I

 

the real problem is how often ryzen goes into high vcore mode even under light load or idle.

 

Those are just bursts, and are within spec.
And mind you, current plays an important part in the equation.

Remember when CPUs had a voltage of 2v, or more. But consumed much less power than current CPUs.

 

It could be a very bad ES, a picture of a overclocking attempt or a chip with build in voltage regulator like Intel HEDT had.

 

1,5 Volts.....hmmmmmmmmmmm....crazy.

 

If it's a necessity due to the nature of the architecture, that's fine. If they're doing this so they can keep up with Intel, that worries me.

 

5800X3D can keep up with the 800 USD Intel part consuming way less, I think AMD is going to be fine.
People got scared with the voltage and temperature of the latest AMD CPUs and its all within spec.
And, you can always offset voltage down if you're so inclined (my current 2600 has a -0.1v offset and we're happy).

 

For a given electrical power it would also mean less heat generated/energy lost, by simple joule heating effect. I'm not worried at all by voltages increasing.

P = U*I = R*I^2 , U (Tension V), R(Interconnection resistance Ω), I (Intensity A)

 

The 5800X3D only keeps up in gaming (it's otherwise worse than the 5800X due to lower clocks), and it operates at 1.35v, which isn't all that scary.
But yes, you have otherwise paraphrased my point: if it is actually within spec, it's fine. But 1.5v is unsettlingly high when (I think) this is another node shrink.

 

I'm not worried until I see the real deal. For all we know this was an early revision for early testing. It clearly shows the CPU is an engineering sample. We both know they do things like up voltage and/or reduce clocks to make sure engineering samples are stable enough to validate.

 

Whatts =Volts *Amps
So we have Whatts=1.5*Amps so information
Incomplete give us the amps or whatts and we can figure out the rest just fine

 

Why is that so strange? Older ryzen cpus reach 1.5v with boost as well.

 

I think you mean Watt

 

What ??? Oh yeah I meant watts not whatts !

 

Every Ryzen generation from at least Zen+ has spiked to 1.45v+ and it hasn't been a problem. It's amazing that people are still freaking out about this.

 

I thought smaller processes meant lower voltages...

 

I remember it is often mentioned that voltage values shown in BIOS are not accurate at all. Just saying.

 

it means you need lower voltages for the same frequency, but that doesn't mean you can't use higher if you want to go faster

 

Yes - if power was _given. (ie. predetermined)
So what you're describing would be true if we were talking about say high voltage transmission lines(or any conductor wire for that matter), where for a given electrical power, higher voltage does mean less Joule heating.

But

1. CPU is effectively just a heater, energy wise doing NOTHING but Joule heating. Unlike with the high voltage transmission line, CPU's entire el. energy goes to Joule heating. All given power = Joule heating. And nothing gets transported down the line, beyond CPU.
2. CPU power is not _given. It's whatever it pulls. You can't say that power is _given and then conclude it's less because reasons.

TLDR;
knowing only voltage you can't say much about CPU power. And you certainly CAN'T say that it might use LESS energy because of higher voltage (i mean you just did, but you know waht i mean LOL)