Gigabyte Z77 Overclocking Guide

[Makis]

I7-2600K @stock on 1.245v cooled with an H80i
G1 Killer Sniper 3 Z77 Bios F8J( Newest available
8 GB Corsair Dominator Platinum 1600 MHZ CL9
Gigabyte Gtx 670 OC
Samsung Pro 128 GB


Update bsod with 1,070 and also 1,080 now trying 1,090 once again how much time do you suggest running occt now ;-)
Update 1,090 v error from occt how is this possible i ran 45 minutes and no error before going down to 1,070v
Occt stopped after 6 minutes with error messages now going to 1,100v
Would be very nice if You could help me ;-)
1.100v run 12 hrs no issues now testing 4Ghz 1,160 v and if stable 30 min i go for my aim 4.2 GHz with same voltage how much time do you think is Ok 12 hrs occt? ;-)

 

[Makis]

http://s14.directupload.net/file/d/3187/32s393fx_jpg.htm
Here is a pic cpu z and occt why Bus 99,8 not 100 mhz this confuses me ;-)

 

[Master&Puppet]

I7-2600K @stock on 1.245v cooled with an H80i
G1 Killer Sniper 3 Z77 Bios F8J( Newest available
8 GB Corsair Dominator Platinum 1600 MHZ CL9
Gigabyte Gtx 670 OC
Samsung Pro 128 GB


Update bsod with 1,070 and also 1,080 now trying 1,090 once again how much time do you suggest running occt now ;-)
Update 1,090 v error from occt how is this possible i ran 45 minutes and no error before going down to 1,070v
Occt stopped after 6 minutes with error messages now going to 1,100v
Would be very nice if You could help me ;-)
1.100v run 12 hrs no issues now testing 4Ghz 1,160 v and if stable 30 min i go for my aim 4.2 GHz with same voltage how much time do you think is Ok 12 hrs occt? ;-)

When an overclock has marginal stability i.e. it's slightly undervolted you'll get all kinds of weird and wonderful effects - things crashing & recovering but it won't necessarily happen every time. They are called intermittent errors and you have to do a sufficient amount of testing to uncover the ones that would affect you.

As a guideline you'll want to use a program like OCCT, Prime95, Intel Burn Test for an extended period. Some say overnight (8+ hours) some say 12 hours but that will not uncover errors that would appear beyond that however they may never affect you depending on the strain you put your system under in the future.

For rock solid stability you'd have to run several programs back to back for 24-48hrs each and then run demanding games/applications to see if they get any errors either. You would be talking a week or so of testing.

Our advice generally would be to run a stress test for 12-24 hours and then just use your computer normally after that. If you get any strange things happening (errors, crashes, or pop ups) or even simple things like being kicked out of an online game (has happened to me when I was slightly undervolted in BF3) then the first thing I would suggest is to add a fraction more to the vcore and try again.

Here is a pic cpu z and occt why Bus 99,8 not 100 mhz this confuses me ;-)

That's normal, there is a tiny amount of play in all of this. A MHz here or there at the clock speed is nothing to worry about.

 

[Makis]

Thank you for your nice answer ;-)
I uploaded a pic above refering to the Bus speed is this Ok Bus speed 99,8? In Bios is set on auto
In TTL video There is not such a thing to See therefore im writting it;-)

 

[Master&Puppet]

Thank you for your nice answer ;-)
I uploaded a pic above refering to the Bus speed is this Ok Bus speed 99,8? In Bios is set on auto
In TTL video There is not such a thing to See therefore im writting it;-)

Auto generally means 100, so a bclk near to that (0.3MHz either side I suppose) is very typical.

There are some motherboards which cheat by having the auto setting of the bclk a touch higher like 101 and then claim that their motherboards are better performers than others when in fact they've put a 1% overclock on the CPU that way.

 

[Makis]

Ok understood thanks for helpeing now im running occt
1,200 v 4,2 GHz
I get an error from occt with 1,180 @5 minutes i increased to 1.200 and testing ;-)

Update how is this possible stock 1,100v 12 hrs stable then going up to 4Ghz 1.160 v 35 min occt stable so to say
than 1.160 v 1,180 1,200 fails for 4,2 GHz
Now testing 1,225 for 4,2
Looks that i get a Bad cpu or!? ;-)
Tom what are your thoughts about this?

 

[tinytomlogan]

^^^^please stop multi posting. use the edit button.

 

[Makis]

Sry im New here Ok!

 

[AndyM95]

^^^^please stop multi posting. use the edit button.

Tom, does the problem where you have to keep turbo on with the UP4 apply to the UD5H too?
Also, what voltage would you recommend keeping my 2500K below? Some people say 1.35V, others say 1.4V so it would be nice to have a definitive answer. Cheers!

 

[Zhoratiu]

Hi all, I have an interesting question, but first my specks
I7 3770k
MB Asus P8Z77-V Deluxe
Memory Corsair Dominator Platinum 16gb (4x4 gb) 2400Mhz
Cooler H100 push-pull
Video Asus Matrix HD 7970 Platinum
Be Quiet Dark Power Pro 850W 80Plus Platinum

So my question is, since I have all the MB memory slots occupied beside the normal timings that I have written on the memory sticks do I have to sate the Command Rate(tCMD) to 1 or 2?

 

[Makis]

Set xmp Profile otherwise you have to look it up in your RAM specifications.

 

[NickHalden]

*New post, sorry about that*

Okay, pictures is uploaded and specs is down below.

For some reason, my voltage is so high while idling.

30 min. overclock:

(old voltage of 1.365)

Idle:

BIOS-settings:

[imghttp://i.imgur.com/YmxSMrth.jpg[/img]

 

[airdeano]

a couple of things:
turn turbo off
make sure in the windows power option you are in high performance
programs in the running in the background can effect your voltage stream.
have you tried 1.275/1.290 for a 4.5 OC.. 1.345 is a lil high..

 

[Mathius]

I'll start by admitting I haven't read the guide as yet......but I have an IBT Stable (4096mb RAM, 7 Cycles) @ 4.2 Turbo clock....

The only thing I have done to get this OC is obv. change the turbo multi to 42, vcore to 1.275 and PLL to 1.65v

Everything else is default, C1E and all the other power settings are auto....
-----------------------

EDIT (4096mb, 8cycles)
Turbo 42
vcore - 1.19
PLL - 1.65 (a forum member suggested this, but unsure if i need to - normal is 1.80)
Load Line Calib - Extreme

CPU-z Core Volt - between 1.212 and 1.248
MAX Temp - 74'c
Fan Speed 1506 RPM

Can the temp be brought down anymore ?

 

[airdeano]

Can the temp be brought down anymore?

two things? what are you using for a cooling solution?
is that the lowest your 42 vcore can go, stabily?

 

[Mathius]

two things? what are you using for a cooling solution?
is that the lowest your 42 vcore can go, stabily?

Cooling - Hyper 212 Evo.
Volts - I run vcore from 1.275 down to 1.190 just to see if it would pass IBT which it did.

I know IBT stresses harder than Prime in the way of temps, and is so much faster than 24hrs prime, but can I get under 70c

My 212 Evo is facing rear but I only have a 140mm top exhuast atm, oh and 1x 120mm front intake

 

[yd1]

hello
about core degradation due to overvolt.
but is there going to be a degradation when undervolting?

I've found on my GPU actually, that a stable undervolt
is no longer stable after a while, and i've head to raise it couple of times
to keep it stable (in my case from 1.006 gradually to 1.032)


i know its a gpu, assuming its the same with cpu regarding undervolting.

 

[Makis]

Hi there now im running my i7-2600k with same bios settings like TTL
finally stable after cmos reset bios update and windows 7 instead of 8 with 1.235v @ 4.2Ghz
is this ok voltage whise for 24/7 usage and also i have all power energy options disabled like tom said in the video is this the best way ?
Would be nice if you answer

C1e Disabled
C3/C6 Disabled
CPU Eist Disabled








My system
I7-2600K 4.2 Ghz 1.235v
G1 Killer Sniper 3 Z77 Bios F7
16 GB Patriot Memory Viper 3 2133 Mhz CL11
Gigabyte Gtx 670 OC
Samsung Pro 128 GB

 

[Master&Puppet]

hello
about core degradation due to overvolt.
but is there going to be a degradation when undervolting?

I've found on my GPU actually, that a stable undervolt
is no longer stable after a while, and i've head to raise it couple of times
to keep it stable (in my case from 1.006 gradually to 1.032)


i know its a gpu, assuming its the same with cpu regarding undervolting.

The theory is the same but GPUs are more sensitive to voltage changes. You won't damage it by undervolting - that's like saying you'll burn bacon faster by cooking it on a lower heat, it doesn't make sense. You got the crashes on your GPU because of undervolting too much and the same would be true of a CPU. Crashes because of that don't hurt anything.

Hi there now im running my i7-2600k with same bios settings like TTL
finally stable after cmos reset bios update and windows 7 instead of 8 with 1.235v @ 4.2Ghz
is this ok voltage whise for 24/7 usage and also i have all power energy options disabled like tom said in the video is this the best way ?
Would be nice if you answer

C1e Disabled
C3/C6 Disabled
CPU Eist Disabled

That's absolutely fine. Very safe voltage and having those power saving options set is standard.

 

[Scoob]

I generally leave all the power state thingies enabled as it made no difference to my maximum stable OC. Plus I benefit from the machine idling properly while doing simple desktop stuff. I just find it satisfying that the machine is being efficient like that when the power isn't needed.

My old Q6600 needed those things disabled to remain stable at 3.6ghz, but Sandy B. - or my motherboard - just seem much better at switching the power states so it's not been an issue.

Sometimes it's nice to disable them while you're experimenting, so you can see more constant voltages as the chip isn't clocking down, but once you're there I'd try re-enabling it. I'm under water, so my PC is near silent regardless of what it's doing, but an air cooled system would potentially run quieter, if the fans are linked to temps.

Scoob.