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12 versus 16 versus 20 VRM on Gigabyte versus Asus Mobos....

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a b V Motherboard
July 17, 2011 11:12:52 PM

So I'm almost set on a Z68 build but just had a question on Mobo Power phases.

Does the number of VRM matter above 8? When will it start to bottleneck other components? Will Ivy Bridge need more VRM? I am a little confused and there is not too much helpful lit on this topic.

I was deciding between AS Rock Z68 (which I believe is 8 phase) versus Asus z68 Pro-V (16 Phase) and the gigabyte z68xp ud5 (20 phase).

Will I ever see a difference? If so..how far into the future? Thanks!

Trying to make this at least a 5 yr system.
April 2, 2012 9:07:31 PM

chillin15 said:
So I'm almost set on a Z68 build but just had a question on Mobo Power phases.

Does the number of VRM matter above 8? When will it start to bottleneck other components? Will Ivy Bridge need more VRM? I am a little confused and there is not too much helpful lit on this topic.

I was deciding between AS Rock Z68 (which I believe is 8 phase) versus Asus z68 Pro-V (16 Phase) and the gigabyte z68xp ud5 (20 phase).

Will I ever see a difference? If so..how far into the future? Thanks!

Trying to make this at least a 5 yr system.


Sorry to dig this up. But i'll like to know the answer too.
a c 715 V Motherboard
a c 207 Ĉ ASUS
April 2, 2012 9:21:13 PM

12 Phases is the 'magic' minimum number for SB and the IB I assume to be pretty much the same. It's not necessary the amount of power it's the smoothness in transitions of phases to the CPU.

ASUS pretty much came to the same conclusion with their P8Z77-V PRO which is a 12+4+2 Phase MOBO; CPU + iGPU + DIMM.
April 2, 2012 10:23:15 PM

chillin15 said:
So I'm almost set on a Z68 build but just had a question on Mobo Power phases.

Does the number of VRM matter above 8? When will it start to bottleneck other components? Will Ivy Bridge need more VRM? I am a little confused and there is not too much helpful lit on this topic.

I was deciding between AS Rock Z68 (which I believe is 8 phase) versus Asus z68 Pro-V (16 Phase) and the gigabyte z68xp ud5 (20 phase).

Will I ever see a difference? If so..how far into the future? Thanks!

Trying to make this at least a 5 yr system.


Thread;s a little old. But hope to know the answer too
!