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About VRMs & Mosfets / Motherboard Safety with 125W+ TDP processors - Page 97

post #961 of 1100
Quote:
Originally Posted by reflex99 View Post

140w processor is really pushing it

I thought I was tech savvy but this is the first time I've worked on upgrading my processor. What exactly will happen if I use a 140w proc on a 95w mobo?
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post #962 of 1100
Here is Intel stance over VRM.
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post #963 of 1100
That doesn't tell me much. So it will work fine?
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post #964 of 1100
Thread Starter 

Quote:

Originally Posted by Zethlis View Post

Quote:
Originally Posted by reflex99 View Post

140w processor is really pushing it

I thought I was tech savvy but this is the first time I've worked on upgrading my processor. What exactly will happen if I use a 140w proc on a 95w mobo?


The board will probably not be coded to run that specific CPU and refuse to POST.  Or blow up soon after putting a very heavy (i.e. P95) load on it, either way works.

 

That video above doesn't make sense.  How is a 16 phase VRM any less balanced than an 8 phase VRM?  Power is split between the phases evenly regardless of amount of phases (unless of course, something like MSI's APS is used and phases are turned off when not in use).  A 16 phase VRM allows the power load to be split between more phases and thus each phase has cooler running components.  If anything the heat differences he describes (of which are probably nowhere near 60C) are probably attenuated by mounting pressure differences in the larger heatsinks over VRM chips.

 

What lower phase count can do is reduce manufacturing costs, that I guess is true.

 


Edited by xd_1771 - 12/27/11 at 1:33am
post #965 of 1100
So it won't work? I'm sorry but all the abbreviations you're using makes me feel like I'm being taught algebra again...
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post #966 of 1100
translation: using high rated CPU on a 95w motherboard = no power on or big fire and smoke.
    
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post #967 of 1100
Thanks for the translation.

Is there no way I can use them together? I don't want to wait another half a month to get a quad core :[
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post #968 of 1100
Thread Starter 

^ Likely, no.

Although if the board does in fact boot up with your processor, you will want to lock cores and/or undervolt to ensure that the board components operate within thermal and rated specs.

post #969 of 1100
Is that adjusted in the BIOS? Never configured my BIOS before.
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post #970 of 1100
Quote:
Originally Posted by xd_1771 View Post

Quote:


The board will probably not be coded to run that specific CPU and refuse to POST.  Or blow up soon after putting a very heavy (i.e. P95) load on it, either way works.

That video above doesn't make sense.  How is a 16 phase VRM any less balanced than an 8 phase VRM?  Power is split between the phases evenly regardless of amount of phases (unless of course, something like MSI's APS is used and phases are turned off when not in use).  A 16 phase VRM allows the power load to be split between more phases and thus each phase has cooler running components.  If anything the heat differences he describes (of which are probably nowhere near 60C) are probably attenuated by mounting pressure differences in the larger heatsinks over VRM chips.

What lower phase count can do is reduce manufacturing costs, that I guess is true.

He was talking about heat mostly i think.

And it kinda makes sense. Most companies use higher numbers of phases to compensate, so they don't have to use more expensive higher rated transistors.

The Classic TA890FXE case, vs the 24phase gigabutt.

More != always better
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