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Old December 15, 2015, 08:45 AM
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Default ASROCK "Sky OC"/MSI/ASUS/Gigabyte/BIOSTAR Non-K Skylake Overclock available!

Skylake Non-K Overlock BIOS updates are now available to ASROCK boards.
Z170 for now, but it also says "Non-Z", so expect those BIOSes available at a later time!



Download at the bottom of this page:
ASRock SKY OC Technology

Supported motherboards:
Z170 OC Formula
Z170M Pro4S
Z170 Extreme7+
Z170M-ITX/ac
Z170 Extreme6+
Z170A-X1/3.1
Z170 Extreme6
Z170 Professional Gaming i7
Z170 Extreme4+
Z170 Gaming K6+
Z170 Extreme4
Z170 Gaming K6
Z170 Extreme3
Z170 Gaming K4
Z170M Extreme4
Z170 Gaming K4/D3
Z170 Pro4
Z170 Gaming-ITX/ac
Z170 Pro4/D3
Z170 Pro4S
Z170M Pro4
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Last edited by zoob; December 24, 2015 at 09:24 AM. Reason: Update thread title.
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Old December 15, 2015, 09:09 AM
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Just ordered an i5 6500 to play with. I'm also building an i7 6700 for a customer, though it's on a Gigabyte board. Might pull the CPU out and put it in my test machine tonight just to see it with my own eyes.
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Old December 15, 2015, 09:16 AM
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Just wanted to mention that some very large motherboard vendors are not doing this quite yet due to potential liability over damaged processors. Some key processor features like power saving modes have to be completely disabled for this to be achieved.
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Old December 15, 2015, 10:10 AM
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Quote:
Originally Posted by zoob View Post
Just ordered an i5 6500 to play with. I'm also building an i7 6700 for a customer, though it's on a Gigabyte board. Might pull the CPU out and put it in my test machine tonight just to see it with my own eyes.
Remind me not to buy a PC from you! Unless of course that passes as the burn-in test?
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Old December 15, 2015, 10:10 AM
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Interesting, all I heard so far is that IGP needs to be disabled. Will be interesting to see which power saving modes get disabled in exchange for BCLK adjustments. If it's things like link power management for PCI-E/SATA then that's not so bad.
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Old December 15, 2015, 10:36 AM
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Quote:
Originally Posted by Lysrin View Post
Remind me not to buy a PC from you! Unless of course that passes as the burn-in test?
LOL, if everything plays nicely he's going to OC once Gigabyte gets this same non-K OC treatment
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Old December 15, 2015, 11:06 AM
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MSI Z170A XPOWER GAMING TE - NON-K OC BIOS available here:

[Overclocking Support Thread] MSI Z170A XPOWER GAMING TE - HWBOT forum
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Old December 15, 2015, 04:56 PM
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ASUS Here!:

ASUS Z170 non-k unlock - Page 3 - HWBOT forum

Quote:
Originally Posted by elmor
* Maximus VIII Hero 0001
* Maximus VIII Gene 0001
* Maximus VIII Extreme 0001
* Maximus VIII Impact 0001
* Z170-DELUXE 0050
* Z170-A 0050
* Z170-E 0050

This is not an official ASUS BIOS, only enables base clock overclocking on non-K CPUs.
Don’t use this for K-series CPUs.
It might damage your hardware, no guarantees provided.


Issues found so far

* No IGPU
* No dynamic change of CPU frequency
* No C-states
* No Turbo Mode
* CPU temperature reading is incorrect
* AVX instructions have very low performance
* Windows XP ACPI not supported

After flashing set the following settings to make it boot into OS with correct CPU speed

Advanced\CPU Configuration
- Boot Performance Mode -> Turbo Performance

Advanced\CPU Configuration\CPU Power Management Configuration
- Intel(R) SpeedStep(tm) -> Disabled
- CPU C states -> Disabled
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Old December 15, 2015, 05:39 PM
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Quote:
Originally Posted by zoob View Post
Issues found so far

* No IGPU
* No dynamic change of CPU frequency
* No C-states
* No Turbo Mode
* CPU temperature reading is incorrect
* AVX instructions have very low performance
* Windows XP ACPI not supported
That's a pretty lengthy list of tradeoffs. I wonder if it will always be like this? I would miss AVX performance and temp readings in particular.
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Old December 15, 2015, 05:56 PM
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A commenter in this thread: Overclocking Non-K Intel Skylake CPUs (Performance Tests!) | Overclocking.Guide mentions that Non-K overclock could be the result of an Intel Management Engine hack.
That could explain the power saving options and temperature trade-offs. Maybe the CPU doesn't know how to handle the power states and doesn't know how to power up the AVX parts of the CPU without thinking it's pulling too much power?
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