A little confused by my voltages for my 3570K...

[jimbo]

Hello,

Today I managed to get my 3570K to 4.5GHz, ran a stress test using Intel XTU for 3 hours and it was stable and the absolute max temp I hit was 68 degrees.

I was pretty happy to get this clock with these kind of temps, however:

a) I had to set the voltage to 1.35v. From what I've read, this is stupidly high for a 4.5GHz clock but it's what I require for it to be stable.

b) I successfully delidded my CPU today as my temps were bloody awful.

Is 68 degrees MAX a good temp for a delidded 3570K @ 1.35v?

I am led to believe that I did NOT win the silicon lottery with my CPU seeing as it's so needy for juice.

System specs are:

3570K CPU
MSI z77a G45 mobo
H80i cooler
16GB RAM
OCZ ModXStream 600w PSU

Thanks.

 

[airdeano]

is that a manual voltage setting or an offset setting?

68° is pretty good for the amount of volts supplied and a single fan rad. seeing
as non-lidded CPU seem to bolt for 80°+ on less voltage. what temps before lidding?

when listing specs, please use the main body. if you change your specs in the sig it
will confuse readers that read this thread in the future...

 

[Master&Puppet]

It will be manual, you can't do offset voltages on MSI z77.

@ Jimbo - yes it's the silicon lottery I'm afraid. If that's what it takes then that is what you have to use! As long as temps are ok (and they are) you'll all good to go. I'd suggest testing for 8hrs+ before you sit back and relax.

 

[jimbo]

is that a manual voltage setting or an offset setting?

68° is pretty good for the amount of volts supplied and a single fan rad. seeing
as non-lidded CPU seem to bolt for 80°+ on less voltage. what temps before lidding?

when listing specs, please use the main body. if you change your specs in the sig it
will confuse readers that read this thread in the future...

I don't know what the temps were before delidding at that voltage. I dread to think. I know that at 4.2 GHz 1.25v I was in the high 70s with the H80i before delidding.

Would it be safe to push the voltage a little higher and go for a higher clock?

It will be manual, you can't do offset voltages on MSI z77.

@ Jimbo - yes it's the silicon lottery I'm afraid. If that's what it takes then that is what you have to use! As long as temps are ok (and they are) you'll all good to go. I'd suggest testing for 8hrs+ before you sit back and relax.

I'll fire it up now. I hope it works!

Thanks.

 

[FTLN]

Just got back in from work and my delidded 3770k on a z77a-gd65 @ 1.28v after 8 hours prime 95 = max temp 61c on a h60..

Hows your vdroop? have a look in cpu-z whilst under load. if it is dropping then that may be why you need a high voltage.

To stop vdroop update to latest bios and -

vdroop ffset Control - 100%
digital compensation level - high
cpu core ocp expander - enhanced

Disable
Eist
Intel C-stat
C1e Support
Eup2013

hope this helps......

-- Edit --
also try stressing with Intel Burn Test.. This will give you higher temps.

-- Edit 2 --
Intel XTU is shit for stressing cpu's, just tried it and temps are no where near as high as IBT or Prime.. Tighten up your vdroop and lower them volts if you can..

 

[Master&Puppet]

-- Edit 2 --
Intel XTU is shit for stressing cpu's, just tried it and temps are no where near as high as IBT or Prime.. Tighten up your vdroop and lower them volts if you can..

Useful to know, haven't used XTU myself.