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Skylake Overclocking Guide [With Statistics] - Page 766

post #7651 of 11364
Quote:
Originally Posted by kayan View Post

I just got a 6700k and swapped to an air cooler (NH-D15S). What should I start with for overclocking? Auto voltage gets up to 1.4, ew.... Stock settings max out temps around 72ish C.

The Noctua does pretty good on mine even tho I run all stock settings.

Can do 4.7-4.8 at 1.4'ish volts with max temp around 68. I'm delidded though.

I'm kinda in the same boat as you, except I need to figure out how low on volts I should be at for 4ghz
post #7652 of 11364
Quote:
Originally Posted by JackCY View Post

False, what you see as Vcore in UEFI isn't true core voltage but they are indirectly related, anyway the true core voltage is about 0.1-0.2V lower due to integrated LDOs in the CPU. What you setup in UEFI is in fact a Vccin not Vcore but the board makers just named it Vcore so people get their heads over it.
14nm transistors at 1.4V+ would be a nice fried pancake.

Wow that's interesting, do these "integrated LDO's" provide some voltage regulation? Is this why Haswell "safe voltage" was lower because what you set in the bios is the true core voltage, due to the FIVR?
post #7653 of 11364
Yeah the LDOs are like FIVR was on Haswell. But so little is known and written about it it's hard to find, you really gotta dig it out, so they went with calling it Vcore in UEFI since they are related but IMHO there is additional stabilization on the CPU itself which reduces the voltage a little so little that it couldn't be done with FIVR. Yes on Haswell you would set Vccin for the FIVR and then Vcore which the FIVR would convert to. Now you can only set the "Vcore" you feed to the CPU where LDOs drop it and stabilize it automatically to a lower true Vcore.
There are articles and podcasts about it. Another is the presence of many capacitors on the underside and the fact that 22nm wouldn't handle so high Vcores with so good power consumption people feed now to 14nm so there is an obvious hidden V drop. My guess is the drop is about 0.2V. Which was the lowest limit FIVR could do before, I use 0.3V on my FIVR to not run into issues. Intel doesn't really talk about the LDOs much since it's too technical for their marketing department wink.gif
post #7654 of 11364
Quote:
Originally Posted by JackCY View Post

Yeah the LDOs are like FIVR was on Haswell. But so little is known and written about it it's hard to find, you really gotta dig it out, so they went with calling it Vcore in UEFI since they are related but IMHO there is additional stabilization on the CPU itself which reduces the voltage a little so little that it couldn't be done with FIVR. Yes on Haswell you would set Vccin for the FIVR and then Vcore which the FIVR would convert to. Now you can only set the "Vcore" you feed to the CPU where LDOs drop it and stabilize it automatically to a lower true Vcore.
There are articles and podcasts about it. Another is the presence of many capacitors on the underside and the fact that 22nm wouldn't handle so high Vcores with so good power consumption people feed now to 14nm so there is an obvious hidden V drop. My guess is the drop is about 0.2V. Which was the lowest limit FIVR could do before, I use 0.3V on my FIVR to not run into issues. Intel doesn't really talk about the LDOs much since it's too technical for their marketing department wink.gif

Very interesting! Makes me feel better running at 1.4vcore tongue.gif
post #7655 of 11364
LinX-0.6.6 (11.3.3) test saw the highest temps even hotter than prime95.. You want to see how hot it can get? Use LinX, 20 passes..

Link to the forum thread: http://www.xtremesystems.org/forums/showthread.php?201670-LinX-A-simple-Linpack-interface/page37&s=78c26245a5bbdd371014bc0153f41387

Link to the Download: https://www.mediafire.com/?s7sufl664nm5omn
post #7656 of 11364
Ran 20 LinX.
Temps are ok I think.
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post #7657 of 11364
So after trying everything.. I need a minimum of 1.46v to keep stable at 4.6ghz. Is this considered a bad chip (6600k)?
post #7658 of 11364
When you guys bench with x264... you use high priority ?
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post #7659 of 11364
Quote:
Originally Posted by Ottesen View Post

When you guys bench with x264... you use high priority ?

Use normal priority. Read the first post for more details on why.
post #7660 of 11364
Quote:
Originally Posted by RavageTheEarth View Post

Use normal priority. Read the first post for more details on why.

Thank you good sir ! I've read it but must be blind
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