Overclocking Haswell on Gigabyte

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Diagrafeas

Member
Jun 24, 2005
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My setup...

Intel Core i5 4670K
Gigabyte GA-Z87-HD3
Crucial Ballistix Tactical Tracer 2x8GB (1600MHZ 8-8-8-24 XMP)

First of all the motherboard sets all cores at 3.8GHZ with 1.076Vcore in BIOS (1.1539 Prime95) and Ring at 3.8GHz too with 1.05V in BIOS (don't know what happens under AVX Load) when you set XMP Profile.

By letting Voltages to Auto and only changing Turbo Boost Multipliers i get:
Core:3.9GHz , Ring 3.9GHz , Core Voltage:1.076V (Prime 1.1588) , Ring Voltage:1.05V (Prime Unknown)
Core:4.0GHz , Ring 4.0GHz , Core Voltage:1.076V (Prime 1.1588) , Ring Voltage:1.05V (Prime Unknown)
Core:4.1GHz , Ring 4.0GHz , Core Voltage:1.076V (Prime 1.1621) , Ring Voltage:1.05V (Prime Unknown)
Core:4.2GHz , Ring 4.0GHz , Core Voltage:1.273V (Prime 1.3594) , Ring Voltage: Don't Remenber (Prime Unknown)

Fist question.
How the hell do i choose what the Ring Frequency is manually on this motherboard?
There isn't a Turbo Multiplier for Ring.

Second question.
What are your voltages at 4GHZ Core - 4GHz Ring?
The right step is to set them manually but i don't know where to start.

Just for reference...
Core:3.4GHz , Ring 3.4GHz , Core Voltage:0.978V (Prime 1.0513) , Ring Voltage: 1.05 (Prime Unknown)
Core:3.5GHz , Ring 3.5GHz , Core Voltage:1.002V (Prime 1.0757) , Ring Voltage: 1.05 (Prime Unknown)
Core:3.6GHz , Ring 3.6GHz , Core Voltage:1.027V (Prime 1.1007) , Ring Voltage: 1.05 (Prime Unknown)
Core:3.7GHz , Ring 3.7GHz , Core Voltage:1.051V (Prime 1.1295) , Ring Voltage: 1.05 (Prime Unknown)
 
Last edited:
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Tweakin

Platinum Member
Feb 7, 2000
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Diagrafeas said:
Thank you.
So Auto rules use too much voltage.
I'll set them manually and see what i get.
Click to expand...

Ya gotta get off the juice...I was able to run up 4.1 with 1.100 on the vcore and no other voltage changes. Manual is the only way to go.
 
D

Diagrafeas

Member
Jun 24, 2005
123
0
76
Matt_G said:
You may want to read this guide...
http://www.overclock.net/t/1401976/the-gigabyte-z87-haswell-overclocking-oc-guide
Click to expand...

I have read the guide and it is very good.
One thing that i don't get is why isn't there an option inside the bios to set Ring Multiplier at Turbo and Core and Ring Voltages at Turbo.
It would be much easier.
Now i have to disable turbo and change Core and Ring Multipliers and Voltages as if it is always at Turbo mode.
C states should drop frequency but i am not so sure.

Edit 1...
This BIOS is driving me crazy...
I Disabled Turbo Boost (Previously set 40 values get grey).
I set Core and Ring Multiplier at 34... OK everything works at 3400MHz.
Then i set Core Multiplier at 35 and Ring multiplier at 34. Everything runs at 4000MHz, the greyed out Turbo Values! Why? What the F...?

Edit 2...
And another question...
Either i set Core Voltage at Auto or Normal it doesn't stay constant at BIOS.
It goes up with Turbo Multiplier.
Should i set it manually at the default 3.4 voltage and then play with offset as i increase turbo?
And if i set it manually will it drop or stay constant?

Edit 3...
I tried and if i set voltage manually it stays the same from 800MHz to MAX Turbo.
What do i have to do in order to drop the voltage at Turbo Frequency? Use negative offset?
 
Last edited:
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ratjacket

Member
Oct 5, 2013
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Uncore auto ocs at 35 to 40 its apin in the arse it took me ages to figure out that problem when i was ocing

basicly set it to 34 or 36 if you dont want it to auto oc to 4000
 
D

Diagrafeas

Member
Jun 24, 2005
123
0
76
ratjacket said:
Uncore auto ocs at 35 to 40 its apin in the arse it took me ages to figure out that problem when i was ocing

basicly set it to 34 or 36 if you dont want it to auto oc to 4000
Click to expand...

OK thanks.
Any advice on voltage going too high at 4.2GHz,other than setting it manually?
 
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