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Full Version: Core Voltage, And Vc Under Load.
OverclockersClub Forums > Hardware > Modding, Cases & Power Supplies
robAP
over volting your core will kill the chip...(duh..)
so now i'm wondering if Vc is damaging only under load or at all times even at idle?

i see my Core Voltage under load dips. undoubtedly its my mobo voltage controlling ability cause the same thing happened on my older cheaper Tt PSU. but the problem is this. the absolute shoot yourself in the foot max Vc on the mobile is 1.85....or 1.82 is you're safer....well if thats showing at idle and under load its 1.79 or 1.77 or something...wich one is more critical? can i safely exceed and go up to 1.9Vc at idle if under load its gonna be 1.82?....
markiemrboo
are your readings measured with a multimeter, or by software?
robAP
thats the thing. speedfan shows it. OCCT shows it. havent used the multimeter yet....dunno exactly where to attach the two wires to achieve the measurement from.....much less what setting to have the multimeter on....

regardless, heres the OCCT chart.
user posted image
but im wondering primarily if there is a dip under load...if while under load the high voltage setting is damaging only under load or at all times?
lilkev715
It is REALLY hard to measure Vcore on a running system even in a open case system. The best and only way I know of to measure Vcore directly with a digital multimeter is to have contact with the underside of the CPU on the pins. If you really want to measure true Vcore you can get the white tech papars from AMD/Intel that detail the different pin-outs on their processors.

As with all software monitoring programs, no matter what the software used they all rely on the on-board voltage sensor (winbond for example).
robAP
so if indeed there is a dip, (wich honestly i think is likely seeing how it also handles the 12v voltages....it dips there a bit too( then i guess i need to know if what i see on the dip is the voltage to worry about or if at idle i have to worry about that higher setting (non-dipped) as well? if its only dangerous to see a high setting under load, then ill set the BIOS setting up at 1.9Vc and let it load at 1.85, thereby staying safe....if the opposite is true..then ill have to settle for where i am now..
markiemrboo
http://www.geocities.com/trats102002/nf7vcore.html

QUOTE
During the test period, the lowest vcore reported by mbm was 1.76v, and highest was 1.81v, giving a variation of 2.8% between idle and load. From the above measurements, however, vcore variation was 1% between idle and load.


So basically, it's probably no where near as bad as the software readings make it out to be tongue.gif
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