Vcore Question
I have what is in my sig powered with a ocz modstream 600watt psu. Question is in bios i have the voltage set to 1.4v but when i open up cpuz it says its only getting 1.32v. Which is correct? I my fsb is at 429 with a 7 multiplier for 3ghz and it boots to windows fine but fails after a wile in prime95. My temps are fine so i know i can up the voltage more but i am wondering if i am nearing where i shouldnt give it any more voltage (1.4v) or if i have some more room (1.32v).
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Vdroop = The difference between the set outlet pressure at a flow rate of zero and the outlet pressure at a given flow rate. Meens difference between BIOS setting and IC control.
http://wiki.extremeoverclocking.com/wiki/Technical_Terms
What you think of is some sort of Delta between Idle and load.
Magic, try this.
Lower the fsb to amore normal level, leave the multi, but set the memory divider so that you end up with a memory speed where you are now. Leave the voltages as they are. 1.45 volt is max you should use. Even auto on vcore might give lesses vdroop. Check the bios readings what the vcore is and compare it to what you have set it to. Try the above advice and let me know if this works any different.
Thanks, Mac.
My past 4 motherboards in my main rig have all been had innaccurate voltage readouts in the BIOS, but the voltage reading in CPU-Z was always correct for me. I know that isn't always the case with all boards, but I have come to trust it more than any BIOS.
In the end, the only thing I really trust is my multimeter, but CPU-Z comes in a distant 2nd.
For some reason I have NEVER had a board report the correct voltages on my Antec Neo HE 550. The 12v always reads as ~11.7v and the 5v usually reads as 4.8v in BIOS. But with my multimeter (which has been tested to be accurate) I get ~12.08v and ~5.07v.
As far as software goes, i have not run the whole gamut of available utilities, primarily because CPU-Z has always worked well for me.
My current board, the ASUS Maximus Formula, reports vCore accurately although it still reports the incorrect 12v and 5v readouts. On a side note, the latest BIOS for this board drastically improves the vdroop that most C2Q seem to have. The delta of VID to actual voltage is never more than .02v now when before it was almost .1v under load.