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post #31 of 39
Quote:
Originally Posted by AtomicFrost View Post
It can help in ways other then overclocking to have more phases:
http://www.hardwaresecrets.com/artic...-Circuit/616/1
woot! now my mother board will last 20 years instead of 10!!!!! yay!
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post #32 of 39
Quote:
Originally Posted by AtomicFrost View Post
It can help in ways other then overclocking to have more phases:
http://www.hardwaresecrets.com/artic...-Circuit/616/1



o_0 That sentence is written pretty badly, but you get the idea.
That isn't 100% true, i was actually asked to read and edit that article for him as a favor and i didn't have time, but i did read that. here is how it works the PWM has a number of phases and they all work at the same time in parallel, that article is pretty old but its right on most things. MOST PWMs run their phases in parallel, with one exception within the last 5 years and that was volterra PWM for the classy. Now PWMs don't have 16 phases they have anywhere from 3-12, the number isn't important as to increase power output you can just increase the number of MOSFETs and Chokes and then you could have 4 MOSFETs+Chokes per phase on a phase PWM to have 24 phases, and it would still be a true 24 phase design. The advantage of increasing phase count is that you decrease continuous output of each phase, so instead of 12 phases pushing 30 amps a pop you will have 24 phases pushing 15 amps a pop, which is much better for efficiency and longevity. The increase in choke and mosfet count increases the effectiveness of the voltage output by cleaning up the voltage persay.

VRD12 PWM spec states that less capacitor banks with faster VRm are better than large capacitor banks with slow vrm. So to keep voltage ripple to a minimum you need very high quality chokes to help do the capacitors job.

You will see that the big bang will have more than 16 if not 16 phases, because that board is made for sustaining very high OC, your board is still pretty good but will it last a few years with that stress at 5.3ghz? probably not. But you will have a new system by then most likely so it doesn't really matter.
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post #33 of 39
Thread Starter 
Quote:
Originally Posted by Sin0822 View Post
That isn't 100% true, i was actually asked to read and edit that article for him as a favor and i didn't have time, but i did read that. here is how it works the PWM has a number of phases and they all work at the same time in parallel, that article is pretty old but its right on most things. MOST PWMs run their phases in parallel, with one exception within the last 5 years and that was volterra PWM for the classy. Now PWMs don't have 16 phases they have anywhere from 3-12, the number isn't important as to increase power output you can just increase the number of MOSFETs and Chokes and then you could have 4 MOSFETs+Chokes per phase on a phase PWM to have 24 phases, and it would still be a true 24 phase design. The advantage of increasing phase count is that you decrease continuous output of each phase, so instead of 12 phases pushing 30 amps a pop you will have 24 phases pushing 15 amps a pop, which is much better for efficiency and longevity. The increase in choke and mosfet count increases the effectiveness of the voltage output by cleaning up the voltage persay.

VRD12 PWM spec states that less capacitor banks with faster VRm are better than large capacitor banks with slow vrm. So to keep voltage ripple to a minimum you need very high quality chokes to help do the capacitors job.

You will see that the big bang will have more than 16 if not 16 phases, because that board is made for sustaining very high OC, your board is still pretty good but will it last a few years with that stress at 5.3ghz? probably not. But you will have a new system by then most likely so it doesn't really matter.
Well, i'm not trying to kill my chip either. Most oc's ive seen over 5ghz require an insane amount of volts, so honestly, you wouldn't need to sustain that high of an overclock longer than it would take to get a cpu-z validation.

If I have to settle for 4.6-4.8ghz, that's fine with me, as long as I have a system that lasts me a few years rather than a few minutes!
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post #34 of 39
4.8 is very stable on my baord
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post #35 of 39
how many phases does my p67a g43 have?
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post #36 of 39
Quote:
Originally Posted by renji1337 View Post
how many phases does my p67a g43 have?
Four.
post #37 of 39
Quote:
Originally Posted by SimpleTech View Post
Four.
is it still a good board?
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post #38 of 39
Quote:
Originally Posted by renji1337 View Post
is it still a good board?
Should do alright for a medium overclock, 4.3-4.5GHz.
post #39 of 39
Quote:
Originally Posted by Behemoth777 View Post
Well, I usually don't like to stay too brand specific for anything, I have heard bad things about boards from every company.

The one thing I don't like about the gigabyte and asus boards is those foxconn sockets. The msi boards along with the biostar board use lotes sockets.
My saber uses Lotes I think :S
In general, all P67 boards are good. One thing about MSI is that they use DrMOS, which gets a bit hotter and has less heat resistance in the VRMS. Another thing is a few incidences of a terrible customer support.
In P67, I don't think that you can go wrong.
    
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