Maximus V gene & 3570K - Strangely high stock voltage

[Joni]

Hey,

Just got my V gene/3570K rig together earlier today and now im really wondering why i have such high stock volts (1.268v at gaming load, 1.248v at P95 load ), i tested the cpu yesterday in my brothers rig which has asrock Z77 mobo and with that stock volts were way lower ( 1.178v)

Everything is working fine, just really bizarre that there is such big difference on volts which obviously makes cpu temperatures a lot higher which really aint very nice.

Cleared cmos and loaded defaults but didint change anything.

System details are:

Asus Maximus V Gene ( bios 1309 )
i5 3570K
Thermalright True Spirit 120 rev A
EVGA GTX 680 2GB
G.Skill Ripjaws X 2x4GB 2133MHz
Intel 330 120GB SSD & WD 1Tb HDD
Super Flower Golden King Platinium 650W
CM Storm Stryker
Windws 7 Ultimate 64bit

Thx

Joni

[HiVizMan]

quick question did you do a clear cmos after you updated the bios?

And have you made any changes to the bios at all? Or changes to your power plan in OS.


That being said each CPU is unique and will have its own voltages for certain things. However that does seem a little higher than what I would expect. I get that for my system under load at 4.4GHz

[Joni]

I didnt update bios, that 1309 was in it when got it.

First after clearing cmos tested it with F5 factory defaults, now settings i have are defaults apart from changed ram speed, timings and voltage. CPU voltage remained was same with both. I know each cpu could have different vid, but i think this is bit strange because this same cpu in other mobo i got almost 0.100 lower stock volts.

Windows powerplan is untouched "balanced".

[HiVizMan]

Are you comfortable flashing your bios with a Fat formatted USB stick and the EZflash utility that is found under the tools menu in the BIOS?

If yes then I suggest you flash your bios to 1408. Not 1604 please.

[Joni]

Ive used ezflash in past with other asus mobos and its fairly simple to use, i think ill just test first if i encounter any problems with overcloking with current bios as not really big fan of bios flashes. There is always slight possibility that something goes wrong and really always performed bios updates only as last resort.

[HiVizMan]

Now you sir are a man after my own heart. Quite correct.

Just post up here if you get stuck and either I or one of the outstanding regulars that we have will give you a hand.

[Uetsch]

Hello Everybody
I got the same MoBo and CPU. I updated the bios to 1604 and OC´ed to 4.4GHz by CPU LevelUp. My Vcore Voltage is set automatically to 1.325V. Is it too high?
Sorry to interrupt the discussion

[HiVizMan]

Nope that is not too high, and as long as your system remains within the acceptable temperature limits then just enjoy your system.

[Joni]

Im still not sure why the default vcore is so high but i think asus must use some difference method to vid detection or just adds bit extra in some other reason. Afterall this is more oc board when the asrock pro3 i tested too is just cheap basic board which aint really meant for overcloking.

This cpu seems to bit lemon so its probably part reason that it has high volts at stock. Did some OC testing in past few days and it needs whopping 1.320v to be completely stable at 4.5ghz, weird thing tho is that even with those volts my temps arent really that bad at all. After 6h P95 run highest core hitted 82 degrees at max and other were mid 70:s and in gaming only etting low 60:s
.

Its really strange how big variations there is chip to chip with IB, i had another 3570K earlier and with that i was able to get 4.6Ghz with 1.228v, but even with that low volts i had pretty insane temps considering the low volts( around mid 80:s ) + had Corsair H100 on that rig which is a lot better cooler than true spirit i have now

[feniks]

yeah, IB chips differ a lot, I had 6 of them in my hands (all 3770K) and I've seen one needing 1.51V for 4.8Ghz (or around 1.3ish for 4.6GHz) and I've seen two that could do stable 4.6GHz with near stock voltage (1.2v) and 5.0GHz with 1.46V ... they just differ greatly ... all numbers at Ultra High 75% LLC.

now generally if I see a 3770K that needs more than 1.15v for stock Turbo 3.9GHz (with Intel spec LLC) I consider it a lemon, usually those need hell of vcore at higher clocks and quickly hit the wall even with decent cooling.

good test is to see what it takes to boot 5.0GHz (doesn't have to be stable, just boot successfully), if it is more than 1.35V vcore (to boot) then it's crap.