EVGA RTX3070 FTW3 Ultra VRM Problem

[HABAR]

EVGA GeForce RTX 3070 FTW3 Ultra Review

The EVGA RTX 3070 FTW3 Ultra is the best overclocker in our testing today because of a generous power limit increase to 270 W that can be adjusted even further. The large triple-slot, triple-fan cooler achieves excellent temperatures and features fan stop.

www.techpowerup.com

GPU voltage is 12-phase and managed by an OnSemi NCP81610 controller.

You talk about this card's voltage regulation module. Let's look this controller's datasheet.

https://www.onsemi.com/pub/Collateral/NCP81610-D.PDF

The device is capable of driving up to 8 phases and incorporates differential voltage and phase current sensing, adaptive voltage positioning and PWM_VID interface to provide and accurately regulated power for computer or graphic controllers.

This card has 12 phase VRM configuration and this controller supports 8 phases. How is this possible?
@W1zzard you reviewed this card, so ı tagged you.


Sorry for my English, thanks for reading and answering.

 

[W1zzard]

Maybe they doubled up some of those phases

 

[HABAR]

Maybe they doubled up some of those phases

Just, is it just that?

 

[R-T-B]

Just, is it just that?

That's the only way I can see it given the datasheet. It's not uncommon in the industry to use phase doubling.

 

[HABAR]

That's the only way I can see it given the datasheet. It's not uncommon in the industry to use phase doubling.

Maybe they doubled up some of those phases

I thought we only encountered this on motherboards.

Thanks!

 

[tabascosauz]

I thought we only encountered this on motherboards.

Thanks!

You can get 12 from 8 on the PWM by 4x2 + 4. Higher end Ampere cards split the Vcore plane between 2 or 3 separate controllers, so it doesn't seem that unreasonable that a single, smarter PWM can split the Vcore plane into two parts? Can't remember the specific Vcore components that Ampere needs, though.

Lower-midrange PWMs on AM4 boards already do this.