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3770k 1.326v stock? Maximus V Gene

Dasa2
Level 7
Replaced a 2600k with a 3770k but for some reason its stock v in this mb is very high up to 1.326v under load with bios 1903
Tried rolling back to 1408 bios and the it went up even higher to 1.358v under load with load optimised defaults
Any ideas why? it can be worked around with some tweaking but still

As you can see it gets very toasty at this under custom water so i hate to think how it would be with stock cooling



To run 4.3ghz its set to offset - 0.1v


Yep its a crap clocker thankfully it was cheap
x264-x64 stability test v2.06 1 pass
pll 1.7v all other setings default
3.9Ghz 1.08v 55c (stock)
4.0Ghz 1.12v 59c 56c 53c 52c gpu 32c
4.1Ghz 1.16v 62c 60c 56c 54c gpu 33c
4.2Ghz 1.21v 68c 64c 60c 59c gpu 33c
started including actual v under load as it seems to be creeping up
4.3Ghz 1.275v-1.28v 75c 72c 66c 63c gpu 34c
4.4Ghz 1.34v-1.344v 82c 80c 72c 70c gpu 34c

included max gpu temps to give an idea of temp change in the loop as the cpu v increases

at idle
4.3ghz 1.28v 23c 21c 21c 25c gpu 29c
hoping to improve temps by putting new tim under the ihs and push for a bit higher 24\7 clock but the way its scaling it will probably take close to 1.4v to get 4.5ghz unless lower core temps help a bit
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14 REPLIES 14

Nate152
Moderator
Hello Dasa2

Have you tried setting the voltage manually?

Here's my 3770k with the voltage set manually.

52049

Thanks for the quick reply
Yes see the bottom of my post (sorry it got a bit long) there is some tests with the minimum manual v required to run that stability test at each frequency

Nate152
Moderator
Not much you can do if you're giving it just enough voltage to be stable.

If you're using offset your voltage should be dropping more than it is when idle, do you have speed step enabled and the windows power plan set to balanced?

yeah idle v power saving is working it drops to 1.08v from 1.28v when using negative offset
i guess its fine as is provided i force it to lower the v i was just wondering why it would be trying to set it so high

Nate152
Moderator
Asus sets the default settings according to the cpu's they test with then probably add a little more voltage. Since all cpu's are not created equal this ensures all cpu's run stable at default settings.

So yeah it's a good idea to set the voltage rather than let it on auto.

fair enough when overclocking but ~.15v over where it should be when at stock? thats enough to run into some big throttling problems for anyone without good cooling
i think its safe to say thats not normal for this cpu\mb

most oc guides i have read seem to think the v this tries to run at stock after resetting bios or loading optimised defaults is enough for most 3770k to hit 4.5-4.7Ghz

Nate152
Moderator
The maximus vii boards are no different, they're over volted too at auto settings.

Some 4790k's can run at 4.4GHz with 1.15v but with auto settings they run at 1.25v-1.30v. I see it all the time, people post how they can lower the voltage.

If you got a decent 3770k it should be able to do 4.7GHz with 1.35v. This is my 2nd 3770k, my first one was a real dog it needed 1.55v for 4.7GHz.

Dasa2
Level 7
thanks for the feedback

im still having trouble tracking down post problems with memory error 55

so i returned the cpu to its default clock\v 3.9ghz (1.32-1.36v load) (1.168-1.176v idle)
tried dropping to 2133 and increased ram v from 1.6 to 1.65 same timings as 2400 still get random error 55 preventing system post

so just tried 2400 relaxed timing
1.5v memtest ok
1.45v failed to boot error 55
1.475v a single memtest error in test 5
so put it back up to 1.55v to give it a nice margin and then error 55 on post again reboot a few times then it starts fine and seems perfectly stable in tests
but then i have been getting instability in civilisation v with the system overclocked i have yet to confirm if this is cpu or memory oc related

this cpu is proving to be a challenge to oc the ram was perfectly happy at 2133 with tighter timings and less v in the 2600k

Nate152
Moderator
All right

Try setting your ram manually instead of using xmp and see if that might help.

Reset the bios to defaults, on the extreme tweaker tab set the Dram frequency to 2400MHz, scroll down and set the Dram voltage to 1.65v,scroll down a little more and set the VCCSA voltage to 1.15v.

Then go to Dram timing control and enter the first four tinings of your kit at the very top, make sure command rate is 2, let everything else on auto.

F10 and enter to save and exit.

How does she go?