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Haswell Overclocking Guide [With Statistics] - Page 1871

post #18701 of 19637
Hey guys, need some help and advise!

So with the 4790K what are you guys doing in the BIOS to achieve such low VCORE?

If i set my VCORE to 1.26v it only just passes a stability test in OCCT at 4.5Ghz. Is there anything else I need to change in the BIOS than VCORE?
Edited by Milamber - 3/1/16 at 3:27am
    
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post #18702 of 19637
You can try messing with input voltage. Some like high, and some like low.

Set ram to 1600MHz and cache to 3,800MHz for testing overclocks. You can bring these up at a later date, but you may need to play with some other voltages to get there.

Thats about it really.
post #18703 of 19637
1.26v vid with 45x is crazy high for either devils canyon cpu.

I got my 4690k down a bit. Running at 4.7 ghz now, 1.34v vid. The key was bumping uncore from 40x/1.06v to 44x/1.26v, allowing me to drop core vid by .02v. On 2.1V input but now I'm going to lower that. Would like to finalize a summer overclock while it's still cold out.

I've noticed input voltage never causes crashes outside of stress testing.

Might be able to get 4.8 stable someday.
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post #18704 of 19637
Quote:
Originally Posted by new boy View Post

You can try messing with input voltage. Some like high, and some like low.

You can bring these up at a later date, but you may need to play with some other voltages to get there.

Thats about it really.

Not sure what you mean! Which voltages!?

If anyone has a gigabyte board like mine, some help would be appreciated.
    
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post #18705 of 19637
Sorry double post
    
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post #18706 of 19637
input voltage can help. try different values between 1.65v and 2.0v, see if it helps.

system agent and IO-D / IO-A help stablise ram overclocks, but if you lock the ram to 1600MHz for now, you dont have to worry about that.

Vring (cache voltage) helps with cache, but if you lock that at x38, you wont have to worry about that for now either.
Edited by new boy - 3/1/16 at 5:05am
post #18707 of 19637
Hello everybody!

I try to change my Haswell CPU voltage depending on frequencies. If someone want to explain me the different overclocking modes on motherboards, go over here :

http://www.overclock.net/t/1591033/differents-overclocking-modes

I hope some explanations more specific winksmiley.jpg
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post #18708 of 19637
Quote:
Originally Posted by Milamber View Post

Hey guys, need some help and advise!

So with the 4790K what are you guys doing in the BIOS to achieve such low VCORE?

If i set my VCORE to 1.26v it only just passes a stability test in OCCT at 4.5Ghz. Is there anything else I need to change in the BIOS than VCORE?

Make sure you manually set your uncore to 40x and your vring to 1.200v. Once your core is stable you can try to increase your uncore multiplier or lower your vring.

I also set my input voltage to 2.00V and lowered it after I found my max stable core.
post #18709 of 19637
Hello fellow overclockers!

I have been messing around with my 4690k for a while now and been able to get it stable 4.8ghz 1.275v, cache 4.4ghz 1.200v. All power saving options disabled from bios and win 10.

Now that i dropped my core down to 4.7 to get temps where i want them to be (60-70c under load) Should i start turning on some power saving options/utilities or adaptive voltage? Would i get any other benefit from it than just cheaper electricity bill?

If so, some tip's would be much appreciated

My specs:

i5 4690k 4.7ghz 1.260v
G.skill ripjaws 16gb (4x4gb). 1866. 9-10-10-28 (stock 1600. 9-9-9-24)
Asrock z97 pro 4
Gtx 970 1506/8000mhz 1.262v
post #18710 of 19637
Quote:
Originally Posted by kl6mk6 View Post

Make sure you manually set your uncore to 40x and your vring to 1.200v. Once your core is stable you can try to increase your uncore multiplier or lower your vring.

I also set my input voltage to 2.00V and lowered it after I found my max stable core.

Thanks +REP

I think the problem is, I dont know which voltage ranges are safe to play with!
    
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