MaximusIV-Extreme Thread

Ive been benching @ 1.68v 5.6ghz on ambient air cooling and chip is still as fast as the day I got it :) If it burns up rma it

Here is a double edged sword, tip for maximizing bclk/yet the wrong setting can produce CPU sensitivities to '00' at resets etc :

http://g.imagehost.org/0393/skew.jpg

First set Skew driving voltage to 1.04v, set bclk skew to 0 , rest of skew to auto and start pushing bclk to find limit.
next set Skew driving voltage to 1.04v, set bclk skew to -8 , rest of skew to auto and start pushing bclk to find limit.
next set Skew driving voltage to 1.04v, set bclk skew to -12 , rest of skew to auto and start pushing bclk to find limit.
if bclk is increasing going to -12 then slowly lower skew driving voltage from 1.04v to try to max bclk again.

for reducing bclk First set bclk skew to 0 , set Skew driving voltage to 1.04v,rest of skew to auto and start rewducing bclk to find limit.
next set bclk skew to +12 , set Skew driving voltage to 1.04v,rest of skew to auto and start rewducing bclk to find limit.
if bclk is redusing going to +12 then slowly increase skew driving voltage from 1.04v to try to reduce bclk again.

Quote:

---

Originally Posted by LardArse

Here is a double edged sword, tip for maximizing bclk/yet the wrong setting can produce CPU sensitivities to '00' at resets etc :

---

Thanks for info..got a lot of "00" playing with 1303, good thing it wasn't the perpetual "00":)

Quote:

---

Originally Posted by LardArse

Here is a double edged sword, tip for maximizing bclk/yet the wrong setting can produce CPU sensitivities to '00' at resets etc :

http://g.imagehost.org/0393/skew.jpg

First set Skew driving voltage to 1.04v, set bclk skew to 0 , rest of skew to auto and start pushing bclk to find limit.
next set Skew driving voltage to 1.04v, set bclk skew to -8 , rest of skew to auto and start pushing bclk to find limit.
next set Skew driving voltage to 1.04v, set bclk skew to -12 , rest of skew to auto and start pushing bclk to find limit.
if bclk is increasing going to -12 then slowly lower skew driving voltage from 1.04v to try to max bclk again.

for reducing bclk First set bclk skew to 0 , set Skew driving voltage to 1.04v,rest of skew to auto and start rewducing bclk to find limit.
next set bclk skew to +12 , set Skew driving voltage to 1.04v,rest of skew to auto and start rewducing bclk to find limit.
if bclk is redusing going to +12 then slowly increase skew driving voltage from 1.04v to try to reduce bclk again.

---

thanks sham:up:

So I pretty much gave up on 5Ghz+ for daily use :shakes:. Not worth how much I had to bump the voltage to get it stable at all; too high temps for my liking too.

I am working on stability at:
i7-2600k @ 4.8 HT off, 1.350v

I know 1.325v is unstable (small fft fail < 1 minute).

4x4GB @ 1866Mhz, 8-9-8-24-2T, 1.625v

I know 1.600v is unstable (blend fail < 1 minute).

At the above settings I ran blend overnight; 3 of 4 threads were still running after 8+ hours; one thread failed with a rounding error after ~2hr.

I am testing a bump in VCCIO to 1.07500 currently - does anyone have any insight as to where I should look for additional stability at these settings?

Thanks,
-sfxs

Quote:

---

Originally Posted by LardArse

...the wrong setting can produce CPU sensitivities to '00' at resets etc :

---

Is this dangerous or a can Reset CMOS resolve this problem? I might try it if it's not dangerous.

Quote:

---

Originally Posted by jcniest5

Is this dangerous or a can Reset CMOS would resolve this problem? I might try it if it's not dangerous.

---

reset cmos and you're good

Quote:

---

Originally Posted by LardArse

reset cmos and you're good

---

Will try it later then. Thanks!

Hi, I'm experiencing some problems here, i get a double post everything i touch the bclk. Is there any option or bios to get rid of the double post?

Am using bios 1303

Quote:

---

Originally Posted by Loch

Hi, I'm experiencing some problems here, i get a double post everything i touch the bclk. Is there any option or bios to get rid of the double post?

Am using bios 1303

---

its a limitation of using the management engine of PCH to change the bclks, every change a 'shutdown' and power on, i think partly because the bclk range of cpu isnt able to deviate far from bootup frequency.

Quote:

---

Originally Posted by LardArse

its a limitation of using the management engine of PCH to change the bclks, every change a 'shutdown' and power on, i think partly because the bclk range of cpu isnt able to deviate far from bootup frequency.

---

makes sense because this does not happen when you are just changing the multi, and I have only noticed it on massive bclk changes that stray away from the default bclk i.e. 100>105

hello guys i want to know for k series processor
overclock take enable intel speedstep tech and turbo mode or take it off?????

Quote:

---

Originally Posted by subzero 1979

hello guys i want to know for k series processor
overclock take enable intel speedstep tech and turbo mode or take it off?????

---

leave turbo on and turn off speedstep and c1e, c3 and c6

thank you

Quote:

---

Originally Posted by LardArse

its a limitation of using the management engine of PCH to change the bclks, every change a 'shutdown' and power on, i think partly because the bclk range of cpu isnt able to deviate far from bootup frequency.

---

Thanks for replying but I think u got me wrong. What I meant was I'll get a double post every time I shut down n power up. Yes I know the mb will do double post after I change bclk in bios n save. But is it normal that every startup upon shutdown will do a double post?

Quote:

---

Originally Posted by sfxs

I am testing a bump in VCCIO to 1.07500 currently - does anyone have any insight as to where I should look for additional stability at these settings?

Thanks,
-sfxs

---

What does VCCIO do? How about CPU VTT? Does it impact the Vcore or stability like in the case of LGA1366?

Quote:

---

Originally Posted by aoch88

What does VCCIO do? How about CPU VTT? Does it impact the Vcore or stability like in the case of LGA1366?

---

I have mostly been following this information posted by an ASUS rep.

According to that, VCCIO is involved in the memory controller. As I was pushing the ram a bit past spec (not much, but it is 4x4GB - much harder to OC), I decided to up it a bit. I was erroring/crashing linx in seconds before I upped it. After, I ran about 15 minutes or so and saw a couple 101 bsod's so upped the vcore too. I ran 6hr small fft and 20 pass 14GB working set linx today without issues, as well as some 3dMark 11 Extreme passes. I am about to set up blend and go to sleep.

TLDR: VCCIO seems to help if you are pushing ram very hard or have 4 sticks instead of 2. My current voltages etc. are in sig. - everything else is on Auto; PLL and LLC as well.

UPDATE:

Quote:

---

[Apr 8 06:52]FATAL ERROR: Rounding was 0.4981384277, expected less than 0.4
[Apr 8 06:52]Torture Test completed 205 tests in 2 hours, 17 minutes - 1 errors, 0 warnings.

---

:upset:

-sfxs

when i set the voltage to 1.55 i take cpu overvoltage error
what it means?????
how i can to bypass this error
ty

set the Vcore readout to ignore in the Bios monitor tab...

ASUS MaximusIV-Extreme BIOS 1204

ftp://ftp.asus.com.tw/pub/ASUS/mb/LGA1155...e-ASUS-1204.zip

Quote:

---

Originally Posted by Loch

Thanks for replying but I think u got me wrong. What I meant was I'll get a double post every time I shut down n power up. Yes I know the mb will do double post after I change bclk in bios n save. But is it normal that every startup upon shutdown will do a double post?

---

yes , its normal, if bclk is some steps from 100.0 ( i cant remember how many)

i have 1303 its older this one???

Quote:

---

Originally Posted by subzero 1979

i have 1303 its older this one???

---

No, 1204 is older than 1303.

Quote:

---

Originally Posted by LardArse

yes , its normal, if bclk is some steps from 100.0 ( i cant remember how many)

---

Oh I see, I'm running 106 bclk completely stable, jus the double boot every startup is annoying. Y do some of the others running higher bclk got no double post? Does this has anything to do with the mb?

Quote:

---

Originally Posted by LardArse

Here is a double edged sword, tip for maximizing bclk/yet the wrong setting can produce CPU sensitivities to '00' at resets etc :

http://g.imagehost.org/0393/skew.jpg

First set Skew driving voltage to 1.04v, set bclk skew to 0 , rest of skew to auto and start pushing bclk to find limit.
next set Skew driving voltage to 1.04v, set bclk skew to -8 , rest of skew to auto and start pushing bclk to find limit.
next set Skew driving voltage to 1.04v, set bclk skew to -12 , rest of skew to auto and start pushing bclk to find limit.
if bclk is increasing going to -12 then slowly lower skew driving voltage from 1.04v to try to max bclk again.

for reducing bclk First set bclk skew to 0 , set Skew driving voltage to 1.04v,rest of skew to auto and start rewducing bclk to find limit.
next set bclk skew to +12 , set Skew driving voltage to 1.04v,rest of skew to auto and start rewducing bclk to find limit.
if bclk is redusing going to +12 then slowly increase skew driving voltage from 1.04v to try to reduce bclk again.

---

Not to say this doesn't work but lets says all cpu's react diff?

I played with every skew setting on one of my chips. The lower 4 do not have ill effects. The top 2 ( voltage + bclk skew ) however no matter what setting or combo fail to post.

Leaving them alone =