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cpuZ-CPU VID

post #1 of 43
Thread Starter 
Hello,

I've read somewhere that the real vcore is measured in cpu vid when using cpu-z ... I have set my vcore to 1.57 ( bios ) ( done the voltmod on my asus, so that has eliminated vdroop.. ) but cpu-z says 1.376v..

Wich one is the one to go with ?
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post #2 of 43
CPU-Z is usually wrong, bios will be right.
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post #3 of 43
are you using the latest 1.44.1 version?
post #4 of 43
Thread Starter 
yup just downloaded it.
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post #5 of 43
I think you may be a bit mixed up on what your voltage and VID are.

Core Temp will give you your stock voltage (VID) and that is just it. The stock voltage that your CPU will (or rather should) run at if you leave your voltage set at auto.

Your actual voltage should be measured using something like HWMonitor, Asus Probe or other application.

You're using CPUZ so I think it's just your terminology that is wrong. I've had no problems with CPUZ reporting my current voltage but I still leave HWMonitor open just in case. It also shows your minimum and maximum so if you can't remember what your voltage was when vdroop hits you it's displayed right there.
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post #6 of 43
Thread Starter 
ok, so that cpu-z stuff is all rubbish..

Thanks
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post #7 of 43
CoreTemp and Everest are the 2 utils I've found (so far) that display your Vid.
For my CPU (E8400) the Vid range can range between 0.85v to 1.3625v. Its really a voltage reference supplied by the processor that determines the voltage to be delivered to the CPU via the motherboard voltage regulator circuit. So it is important and bases what you CPU max voltage can be.
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post #8 of 43
Quote:
Originally Posted by Perry View Post
I think you may be a bit mixed up on what your voltage and VID are.

Core Temp will give you your stock voltage (VID) and that is just it. The stock voltage that your CPU will (or rather should) run at if you leave your voltage set at auto.

Your actual voltage should be measured using something like HWMonitor, Asus Probe or other application.

You're using CPUZ so I think it's just your terminology that is wrong. I've had no problems with CPUZ reporting my current voltage but I still leave HWMonitor open just in case. It also shows your minimum and maximum so if you can't remember what your voltage was when vdroop hits you it's displayed right there.
VID is measured during fabrication--it's what is suggested for the chip to run stock speeds (like you said) based on some measurement during the fabrication process, and is generally used as a gauge to how easily the chip will OC (rather, how power-hungry the chip might be during oc'ing).

@ OP. I've never had any problem with the recent version of CPU-Z not measuring vcore properly--it is almost always in agreement with other programs that measure vcore--but perhaps this is a motherboard-dependent thing? Well, anyhoo, VID and vcore are two very different things...
    
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post #9 of 43
Quote:
@ OP. I've never had any problem with the recent version of CPU-Z not measuring vcore properly--it is almost always in agreement with other programs that measure vcore--but perhaps this is a motherboard-dependent thing? Well, anyhoo, VID and vcore are two very different things...
Correct, except that some mobo's [like DFI's in particular] will not display the OEM VID when using CoreTemp. Instead they will display the current vcore, as DFI's method of setting vcore is in essence, just raising your default value. Easy way to check if you have one, is to adjust the vcore and check using CoreTemp again..you should spot the VID change..if it doesnt, then no worries, it IS the OEM VID.
post #10 of 43
The CPU-Z for your core voltage reading is accurate...it is the BIOS reading that it is not.
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