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Haswell Overclocking Guide [With Statistics] - Page 766

post #7651 of 19539
Not sure how Macs work. If you can get into the Bios and it's not locked then yes. Also look into a software method for a modest overclock on your CPU if it's locked in Bios.
 
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post #7652 of 19539
Quote:
Originally Posted by Thorteris View Post



This is my first CPU overclock ever should I keep going? I'm currently reaching 77-78 on Intel® Extreme Tuning Utility. Do I need a better cooler for high clocks?

That depends on a lot of factors ..... is the machine used for entertainment purposes or is it something you depend on like an office machine that you earn a living with. If ya can't afford to be without, then it's wise to err on the side of caution.

ETU doesn't get the machine that hot .... while not suggesting Prime95 / AIDA 64 which ya shouldn't used if ya have adaptive voltage control on, I find RoG Real Bench hits the machine with a nice array of real world loads that ya machine is likely to see. Under RoG Real Bench, I required a bit more voltage than you have (1.275) and my temps were 64, 62, 60, 56

Personally, since I make my living off my machine, I use 75C as my temp limit......I'm OK with going higher in the short term but I wouldn't want it sitting there for a solid 10 minutes.

As to the cooling question....Haswell temps rise much more sharply with increased voltages than on previous generations. My max core jumped 4C to 68 at 4.5 ..... and another 6 to 74 at 4.6

At the very least, I'd have a Phanteks PH-TC14-PE, Silver Arrow or Noctua DH-14 on there....an H100 / 110 will give comparable temps but to my mind, if ya gonna put water in ya box, ya really should go custom loop to make it worthwhile.




Edited by JackNaylorPE - 1/1/14 at 8:00am
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post #7653 of 19539
Is 68c acceptable for 4770k at 1.23v in 10 runs of ibt maximum difficulty?
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post #7654 of 19539
Quote:
Originally Posted by Bartouille View Post

Is 68c acceptable for 4770k at 1.23v in 10 runs of ibt maximum difficulty?

What core clock?

68C is pretty cool.
Personally if I can run 4.6GHz in the mid 80's through a High IntelBurn Test V2 I feel great.

SS
Edited by ssiperko - 1/1/14 at 2:54pm
post #7655 of 19539
Quote:
Originally Posted by ssiperko View Post

What core clock?

68C is pretty cool.
Personally if I can run 4.6GHz in the mid 80"s through a High IntelBurn Test V2 I feel great.

SS

4.5ghz and 4ghz uncore.
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post #7656 of 19539
I don't know if this can help anyone but here is how I OC now. IBT x 10 at maximum difficulty is probably the fastest way to find solid stability. I used to run Prime95 for 6 hours and stuff but it is just a waste of time, IBT finds instability 10 times faster, and let you test more settings in a shorter period.

First I test Vcore, I crank VRIN all the way up to 2v, Vring to 1.3v, and all 3 offsets (system agent, ioa, iod) to +0.1v. Basically crank everything as high as you feel comfortable with to take away all the culprits except vcore. Set yourself a speed for core and uncore, mine was 4.5ghz core and 4.0ghz uncore (I like keeping my uncore .5ghz lower than core)

Took about 3 days to find these settings:
1.70v VRIN, 1.23v vCore, 1.15v uncore, +0.1 SA, +0.1 IOD

Finding vcore: 2/x/1.3/0.1/0.1/0.1
x = 1.25v - ok
1.24 - ok
1.23 - ok
1.22 - fail (error in IBT)

Offsets: 2/1.23/1.3/x/x/x
x/x/x = 0/0/0 - fail (bsod 124)
0.025/0.025/0.025 - fail (error in IBT)
0.05/0.05/0.05 - fail (error in IBT)
0.075/0.075/0.075 - fail (error in IBT)
0.1/0/0 - fail (error in IBT)
0/0.1/0 - fail (error in IBT)
0/0/0.1 - fail (error in IBT)
0.1/0/0.1 - ok

Vring: 2/1.3/x/0.1/0/0.1
1.15 - ok
1.0 - fail (error in IBT)
1.125 - fail (error in IBT)

VRIN: x/1.23/1.15/0.1/0/0.1
x = 1.80 - ok
1.70 - ok
1.65 (fail bsod 124)

This made me realize how important playing with SA, IOA, IOD is. I couldn't maintain stability without these. Does that mean my IMC sucks?

All tests done with ambient between 15-17c. Hope this helps.
Edited by Bartouille - 1/1/14 at 3:26pm
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post #7657 of 19539
If your IMC was crap, you'd need to push +25 offset to those parameters in an effort to bypass it. Adding offset to the IMC is perfectly normal
post #7658 of 19539
Someone know if 10c diferrence between cores is normal?
This is after 10 runs on ibt maximum difficult
Hottest core: 90c
Coolest core: 79c


i5 4670k at 4,4ghz with 4,3ghz uncore.
1.3 vcore, 1,250 vcache.


Also when gaming my temps dont exceed 70c, should i worry about them?
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post #7659 of 19539
Thread Starter 
Quote:
Originally Posted by gwertyu View Post

Someone know if 10c diferrence between cores is normal?
This is after 10 runs on ibt maximum difficult
Hottest core: 90c
Coolest core: 79c


i5 4670k at 4,4ghz with 4,3ghz uncore.
1.3 vcore, 1,250 vcache.


Also when gaming my temps dont exceed 70c, should i worry about them?

Read first post.

TL;DR: Yes, then No

 

Quote:
Originally Posted by Bartouille View Post

Is 68c acceptable for 4770k at 1.23v in 10 runs of ibt maximum difficulty?

Read first post.

TL;DR: Yes

Quote:
Originally Posted by Crabby654 View Post

Throwing in my confirmation picture for my OC!

i7-4770k @4.5Ghz @1.295 VID

Thou shall be updated.

 

EDIT:
Picture verification accepted. :devil-smi

In future, I'd prefer HWinfo instead, but HWmonitor/CPUZ combo is enough to get the job done.


Edited by Darkwizzie - 1/1/14 at 4:41pm
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post #7660 of 19539
Hello all,

Happy new year to all.

Been trying the last few days to find a good oc setup for my 4770k and asus maximus VI formula. memory is gskill 2400 2x8gb kit.

Everything is watercooled, with custom loop.

My attempts to reach 4.6 with 1.25 were futile so after testing I am 100% stable at 4.4Ghz, 1.35vcore , 2400 on ram and everything on auto. My uncore is on auto as well.

I read the first page post(and a lot pages after that tongue.gif), tried to lower my uncore but I am having trouble to undestand where to put which voltage. I am using manual voltage at the moment.

I have boot in windows with 4.6Ghz with 1.45vcore but temps with synth bench are too much, its not stable though but if I could find a stable setup I could keep for every day use .

I tried to put min cpu cache ratio at 35, max cpu cache ratio at 35 also. Set the vcore for cache at 1.2 (is that ok?). Set the initial cpu volt at 1.9 and the eventual input voltage at 1.9. Should I set them higher? I was able to boot into windows with 1.35 vcore and 4.5ghz but x264 test failed after 2-3 minutes. So it might be stable for 4.5 with some tweaking, but which one I dont know!

I could use some help with the adaptive voltage. When I switch to adaptive, it changes everything and adds offset and total added volt. How much I would put there?I tried 0.35 and it went to 1.48 when cpu was under stress. Could not understand how that works frown.gif

Any help would be greatly appreciated.! smile.gif
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