GPU wattage

[Vikas.]

I was playing cyberpunk and noticed performance monitoring from nvidia it shows temp utilisation clock speed GPU power and GPU voltage 

GPU voltage is 1volt so my doubt is if it's running on 1 volt how can it run on 100watts ? Likenfor 100 watts on 1volt it will need 100 amps of current but ain't no way wall or Charing brick can provide 100amps is where any transformation going on inside laptop or 1volt is not as it shown 

[Godlygamer23]

The numbers you're seeing are real, but you're misunderstanding what the numbers mean. The power delivery within the laptop converts it from whatever voltage it's at to the voltage the GPU is getting, in this case 1 volt.

 

In a standard PC, your conversion is this(based on US):

115V>12V>1V

 

If the GPU is pulling a total of 300W, that would equate to:

2.6A, 25A, and 300A respectively.

 

The power supply does the initial conversion, and the VRMs on the graphics card do the remaining conversion.

Edited January 15, 2024 by Godlygamer23

[Vikas.]

2 hours ago, Godlygamer23 said:

The numbers you're seeing are real, but you're misunderstanding what the numbers mean. The power delivery within the laptop converts it from whatever voltage it's at to the voltage the GPU is getting, in this case 1 volt.

 

In a standard PC, your conversion is this(based on US):

115V>12V>1V

 

If the GPU is pulling a total of 300W, that would equate to:

2.6A, 25A, and 300A respectively.

 

The power supply does the initial conversion, and the VRMs on the graphics card do the remaining conversion.

As you said if its pulling 300w then it will be 1v×300amps right ?

[Godlygamer23]

5 hours ago, Vikas. said:

As you said if its pulling 300w then it will be 1v×300amps right ?

Yes. 

But that's from the VRM to the GPU. 

[Vikas.]

1 hour ago, Godlygamer23 said:

Yes. 

But that's from the VRM to the GPU. 

But how can vrms on GPU pull 300 amps it's alot of current 

[Bagzie]

6 minutes ago, Vikas. said:

But how can vrms on GPU pull 300 amps it's alot of current 

Because they have alot of them.

[Godlygamer23]

50 minutes ago, Vikas. said:

But how can vrms on GPU pull 300 amps it's alot of current 

The circuit is very low resistance, similar to your vehicle. The starter can pull immense current even though it's only 12V, due to the low resistance. 

 

Same thing here. The distance is not very far, so any energy loss is minimal.