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VRM frequency making a cpu faster?

post #1 of 14
Thread Starter 
Hello,

Lets say you have a 2500k running 4000mhz.

Will the cpu be faster on 410hz vrm switching frequency then on 350hz frequency?

I thought the vrm frequency was only a setting that affects the cpu voltage stablilty, a friend of mine is telling me it makes his cpu operate faster, makes IBT run faster, and open software faster?

What do you guys think??
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post #2 of 14
I don't know but I would like to know too.
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post #3 of 14
ive been using intel systems for tha past few years now and it's the first time I've heard about "vrm frequency" am I missing something here?
 
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post #4 of 14
I doubt it. It only thig it MAY do, is give you a little overclocking headroom, as it may reduce VDROOP a little. ALL its doing, is changing the switching frequency of the VRM, which may reduce the time the capacitors need to "fill the gap" in supplying voltage to the CPU, but it the risk of increasing temps on the VRM as the FETs switch more often. Also funny things can happen in switching circuits that are rapidly changing when coils and caps are involved. Though it the low frequencies you are talking about, I don't think these effects would come into play much.
post #5 of 14
its cleaner power, that's all, the VRMS (capacitor banks) are capacitors, they store and release charges at a specif frequency when stepping down voltage you have a waveform, think of the switching Frequency as having more divisions in that waveform, like more pixels on a screen, the more there are (high resolution) ie faster switching, the better the result will be, in this case, more efficient power, meaning the cpu power won't drop below or above a certain point as much or as long., the switching is like re-setting the voltage.
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post #6 of 14
Thread Starter 
Yes i thought it was just a setting that affects power delivery to the CPU.

A friend of mines say he scores more GFLOPS in IBT, and ''Folders/Software'' opens faster in Windows.

I told him it is just Placebo effect because you think its faster

edit: I just wanted some opinions from other people, because he doesnt beleave me.
Even i took 2 IBT runs on 300hz vrm and 420hz vrm, no difference.
He has screenshots with 5gflops difference in the same run, so i said maybe your OC isnt stable. But it cant be the VRM frequency affecting CPU performance.
When i run IBT maximum gflops difference is 1gflops. So probably just some windows services using some cpu power or something
Edited by prescotter - 5/13/13 at 4:37am
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post #7 of 14
Quote:
Originally Posted by jprovido View Post

ive been using intel systems for tha past few years now and it's the first time I've heard about "vrm frequency" am I missing something here?
In the UEFI for Gigabyte, it's that first option "PWM phase control" on the "3D Power Control" screen, I assume. If you put it on "extreme" or something, the MHz go up. I think Asus actually shows the MHz, not code names like "high", "turbo", "extreme".
post #8 of 14
Have you asked him what his CPU temps are? A thought that has crossed my mind - is it possible his chip is throttling, and maybe running cooler with the change in VRM frequency? I'm wondering if the different VRM frequency is making his chip run cooler, and throttle less. That would explain a speed jump.
post #9 of 14
Quote:
Originally Posted by jprovido View Post

ive been using intel systems for tha past few years now and it's the first time I've heard about "vrm frequency" am I missing something here?

You're not really missing much. I am not sure about gigabyte, but the ASrock BIOS/UEFI does not have vrm frequency at all, while my P8P67-WS Rev has the option (I never used it though so can't tell you anything about what it does).
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post #10 of 14
Faster VRM switching frequency gives you cleaner power, steadier voltage at the expense of extra heat. Unless you're really pushing your system for benching it's very much doubtful that you'll see any big differences by upping the frequency.
 
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