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ASRock Extreme4 Gen3 Voltage Measurement Point

post #1 of 11
Thread Starter 
Posted this in the motherboards forum but didn't get any replies, so I thought someone here might have some insight:

I have the ASRock Z68 Extreme4 Gen3 and an a 2500k that is stable at 5.0GHz @ 1.30v (see http://cdn.overclock.net/6/66/6637d057_5ghzstable1.3v.png).

Because this voltage is lower than anything else I've seen at this speed, I'm kinda questioning the accuracy of the voltage measurement. Does anyone know the location of this measurement point on this board (the P67 extreme4 is probably the same spot as well)?

Or if no one knows, does a multimeter has a high enough impedance to not hurt anything poking around on the board?

640
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Sandy Castle
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post #2 of 11
Congratulations, you have a golden chip.

Bearing in mind most i7 2600k's can hit 5ghz on about 1.35v it's not at all surprising that your i5 2500k without HT can do it on 1.303

That voltage is fine biggrin.gif

Comps
post #3 of 11

measure vcore at any of the cap legs or inductor legs on the back of the mobo, around the CPU socket.. 

 

black probe to bare metal on case... red probe to cap/inductor leg

post #4 of 11
Thread Starter 
Thanks, it's reading about 1.39v (although I'm not sure I trust this multimeter any more than the board)
Sandy Castle
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Sandy Castle
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Hard DriveCoolingOSMonitor
2x Agility 3 120GB Raid0; 3x1TB Hitachi RAID0 CM 212 Evo, lapped, push-pull. Win7 x64 Ultimate, Virtualized Linux, etc. Yamakasi Catleap 
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post #5 of 11

sound like you have trust issues :p

post #6 of 11
Thread Starter 
haha yeah I guess I don't really care that much. Temps are staying low.
Sandy Castle
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Hard DriveCoolingOSMonitor
2x Agility 3 120GB Raid0; 3x1TB Hitachi RAID0 CM 212 Evo, lapped, push-pull. Win7 x64 Ultimate, Virtualized Linux, etc. Yamakasi Catleap 
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post #7 of 11
My 2500k hit 5ghz @ 1.31V on that very same mobo so no worries biggrin.gif Those are actually quite nice temps, mine were at high 60's and I think worst core just broke 70c using prime95. (Alpenföhn matterhorn with akasa vipers p/p)
Edited by Blizlake - 12/18/11 at 12:01pm
post #8 of 11
Thread Starter 
That cooler has a crazy name. Sounds like an expensive hard cider.

I'm actually considering putting together a beastly water cooling system with a motorcycle radiator mounted outside (usually around 35-45 F in the winter in Seattle). Sub-ambient load temps!!
Sandy Castle
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Hard DriveCoolingOSMonitor
2x Agility 3 120GB Raid0; 3x1TB Hitachi RAID0 CM 212 Evo, lapped, push-pull. Win7 x64 Ultimate, Virtualized Linux, etc. Yamakasi Catleap 
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Sandy Castle
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CPUMotherboardGraphicsRAM
2500K 5GHz @1.30v! ASRock Z77 Extreme4 Sapphire 6950 -> 6970, 985/1325 @1.140v Patriot 16GB DDR3 1600 @1866 
Hard DriveCoolingOSMonitor
2x Agility 3 120GB Raid0; 3x1TB Hitachi RAID0 CM 212 Evo, lapped, push-pull. Win7 x64 Ultimate, Virtualized Linux, etc. Yamakasi Catleap 
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post #9 of 11

sub ambient means moisture build up.. make sure your prepared for water droplets forming on your tubing..and collecting on/around the blocks..

post #10 of 11
you want to measure on the back of the board, there should be ceramic capacitors on the back of the socket, a few of them should have the Vcore, or you can use the legs on the caps on the output of the VRM like CL3P20.

One thing to keep in mind, your ground point should be the other leg of the cap, ground point can make a big difference with vcore reads.
    
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