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vrm failure when overclocking

post #1 of 13
Thread Starter 
I've heard from another user that low end amd boards tend to have a high vrm failure rate when overclocking, and i have heard elsewhere that vrm heatsinks will eliminate this issue. my cpu has a tdp of 95w and i want to overclock my cpu from 2.8 to atleast 3.8 to prevent a bottleneck when i get my new card (7850)
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post #2 of 13
need more info...what is your mb...cpu...ect. ?
easyfps
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post #3 of 13
Any low-end Motherboard has this issue. wink.gif

VRM heatsinks won't fix everything. If the phase isn't enough to power the cpu when overclocked, then it will fail regardless.

As for suggestions, we need more information before making them.

Fill out the system info in your profile.
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post #4 of 13
It's not unique to AMD boards, but yesveithout active cooling VRMs can fail with overclocking. I had that happen to me actually a few months ago. Some cheap VRM heat sinks like [=http://www.newegg.com/Product/Product.aspx?Item=N82E16835708011&nm_mc=OTC-Froogle&cm_mmc=OTC-Froogle-_-Memory+++Chipset+Cooling-_-Enzotech-_-35708011]these[/] go a long way.

That said, if you don't have a fan blowing directly at the motherboard and vrm area you may still have problems.

I had a 980BE @ 4.2ghz and I still managed to bottleneck my 7870 when it was over locked. Not sure about the 7850 though. After my vrm meltdown (yes I had a mossfet literally melt into the board) I went LGA2011 and never looked back. Damn expensive, but my card now runs ~20% faster in game and I have no worries about xfire (once I can afford a second card).
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post #5 of 13
hello,
i think its more the power phase issue,i have a 6+2 power phase and am using an 8 core,it should be a 6 core cpu and it fails overclocking due to wrong power phase.
if you put an 8150 in to a 4+1 power phase mobo,your looking at a fire.
    
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post #6 of 13

The 7850 is an x2 dual core, so you're not looking at power loads near that of 95-125W quad cores and hexa cores - on which the majority of failures on incapable boards have been observed.  What is your board?

post #7 of 13
Thread Starter 
msi 870-s g46 with a phenom ii x4 830 overclock from 2.8 to 2.9 XD lol the 2.9 thing was just an experiment. but i need a card that can handle games at ultra at 50 fps so im looking at the 7850. im just boggled by the whole power phase thing you guys mentioned? ( 4+1 etc. ) and it would really suck to shell out money on a card like that to have it bottleneck.
My first build
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CPUMotherboardGraphicsCooling
Phenom ii x4 830 msi 870s-g46 xfx radeon 5450 Corsair h60 
OSMonitorPowerCase
Windows 7 professional x64 Acer lcd  Zephyr mx 750w Raidmax smilodon 
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My first build
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CPUMotherboardGraphicsCooling
Phenom ii x4 830 msi 870s-g46 xfx radeon 5450 Corsair h60 
OSMonitorPowerCase
Windows 7 professional x64 Acer lcd  Zephyr mx 750w Raidmax smilodon 
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post #8 of 13
Thread Starter 
and i thought i filled out my rig?
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Phenom ii x4 830 msi 870s-g46 xfx radeon 5450 Corsair h60 
OSMonitorPowerCase
Windows 7 professional x64 Acer lcd  Zephyr mx 750w Raidmax smilodon 
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My first build
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CPUMotherboardGraphicsCooling
Phenom ii x4 830 msi 870s-g46 xfx radeon 5450 Corsair h60 
OSMonitorPowerCase
Windows 7 professional x64 Acer lcd  Zephyr mx 750w Raidmax smilodon 
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post #9 of 13
Quote:
Originally Posted by MrPerforations View Post

hello,
i think its more the power phase issue,i have a 6+2 power phase and am using an 8 core,it should be a 6 core cpu and it fails overclocking due to wrong power phase.
if you put an 8150 in to a 4+1 power phase mobo,your looking at a fire.


What your saying is not how it works at all... There are plenty of strong 4+1 phase boards.

Please refer to this thread to get more info on amd motherboards and their vrms
http://www.overclock.net/t/946407/amd-motherboard-vrm-information-list
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post #10 of 13
Thread Starter 
the board said that it is made to handle overclocking, and so do some reviews, but im still a little worried
My first build
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CPUMotherboardGraphicsCooling
Phenom ii x4 830 msi 870s-g46 xfx radeon 5450 Corsair h60 
OSMonitorPowerCase
Windows 7 professional x64 Acer lcd  Zephyr mx 750w Raidmax smilodon 
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My first build
(8 items)
 
  
CPUMotherboardGraphicsCooling
Phenom ii x4 830 msi 870s-g46 xfx radeon 5450 Corsair h60 
OSMonitorPowerCase
Windows 7 professional x64 Acer lcd  Zephyr mx 750w Raidmax smilodon 
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