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ASRock releases BCLK OC BIOSes for non K CPUs
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h170_performance View Drop Down
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    Posted: 22 Dec 2015 at 10:48am
Originally posted by borg79 borg79 wrote:

The Sad thing is that only Z170 series motherboard has the BCLK setting, others do not have it DeadCryCryCry

Some US retailers actually had the z170 pro4s (both ATX and micro ATX) for $80 when this first came out. They sold out quickly though. Only boards cheaper than that are the H110s and some B150s.
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Originally posted by Claf1109 Claf1109 wrote:

I don't think you need to go that high. 1.25 will be more than enough to accomadate 4.2 Ghz. You shoud also be able to make it work with LLC level 2. As for LLC 3 I noticed quite a bit of Vdroop, so you might need to up the offset setting a little more to use it.
But i don't know how you plan on setting your vcore exactly. In my bios (2.23) I've only got the option to add some offset voltage to an adaptive voltage setting. 
For example, whatever the LLC, the VID, which i think is the vcore the motherboard is asking for, is alway 20-25 mV higher at full load. It doesn't make sense unless the voltage setting is adpative.
In my experience, for the system to be stable, you need a vdroop of around 15-20 mV

Here's a screenshot of my log. I always did a quick 10 minutes stability test. For the lines in green, i did an onvernight stability test with X264.

Appreciate the help. I will use it as a reference once my new sticks of ram come (replacing cheap 2133 sticks). Thanks a lot!


Edited by h170_performance - 22 Dec 2015 at 10:48am
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The Sad thing is that only Z170 series motherboard has the BCLK setting, others do not have it DeadCryCryCry
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Originally posted by h170_performance h170_performance wrote:

I was going to start at 1.35v bios vcore without LLC and read the load vcore. Then set bios vcore to the previous load vcore and low level LLC. Next, increase LLC level until I get bios and load vcores close, while giving the bios a little more voltage if vdroop brings load vcore below what is the minimum (the load vcore I got in step 1 without LLC). Is this correct?

I don't think you need to go that high. 1.25 will be more than enough to accomadate 4.2 Ghz. You shoud also be able to make it work with LLC level 2. As for LLC 3 I noticed quite a bit of Vdroop, so you might need to up the offset setting a little more to use it.
But i don't know how you plan on setting your vcore exactly. In my bios (2.23) I've only got the option to add some offset voltage to an adaptive voltage setting. 
For example, whatever the LLC, the VID, which i think is the vcore the motherboard is asking for, is alway 20-25 mV higher at full load. It doesn't make sense unless the voltage setting is adpative.
In my experience, for the system to be stable, you need a vdroop of around 15-20 mV

Here's a screenshot of my log. I always did a quick 10 minutes stability test. For the lines in green, i did an onvernight stability test with X264.


Of course, you will only be able to achieve theses frequencies with BCLK on your I5 6600, so the results may vary.
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Originally posted by Claf1109 Claf1109 wrote:


You really should be fine with 4.2 Ghz. I also have a Z170M Pro4S, with a I5-6600K. My CPU cooler is an Enermax Liqmax II 120 and i can manage up to 4.7 Ghz without temperature problems.

At 4.2, i never exceed 50-55°C. The tricky thing is to manage the LLC and the offset to get the voltage as low as you can. Mine is perfectly stable with a 36mv Offset and LLC Level 1
It's also worth noting that you might need to up the current limits for you CPU.

I was going to start at 1.35v bios vcore without LLC and read the load vcore. Then set bios vcore to the previous load vcore and low level LLC. Next, increase LLC level until I get bios and load vcores close, while giving the bios a little more voltage if vdroop brings load vcore below what is the minimum (the load vcore I got in step 1 without LLC). Is this correct?


Edited by h170_performance - 19 Dec 2015 at 3:50pm
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Originally posted by h170_performance h170_performance wrote:

I will try this with my Z170M-pro4s and locked i5-6600. I'd be happy with 4.2Ghz oc but you actually can't read cpu temp when using the Sky OC. 4.2 is modest, but I want to be sure that my chip won't run hot with a 212 Evo cooler. Is this a good and safe speed?

I saw the i5-6400 clocked at 4.7Ghz, which is ridiculous. A 6400 clocked at 4.7 has functionally the same performance as a 6600 with the same clock, correct? 

You really should be fine with 4.2 Ghz. I also have a Z170M Pro4S, with a I5-6600K. My CPU cooler is an Enermax Liqmax II 120 and i can manage up to 4.7 Ghz without temperature problems.

At 4.2, i never exceed 50-55°C. The tricky thing is to manage the LLC and the offset to get the voltage as low as you can. Mine is perfectly stable with a 36mv Offset and LLC Level 1
It's also worth noting that you might need to up the current limits for you CPU.
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Points: 7 		Post Options Post Options   Thanks (0) Thanks(0)   Quote h170_performance Quote  Post ReplyReply Direct Link To This Post Posted: 18 Dec 2015 at 7:20pm
I will try this with my Z170M-pro4s and locked i5-6600. I'd be happy with 4.2Ghz oc but you actually can't read cpu temp when using the Sky OC. 4.2 is modest, but I want to be sure that my chip won't run hot with a 212 Evo cooler. Is this a good and safe speed?

I saw the i5-6400 clocked at 4.7Ghz, which is ridiculous. A 6400 clocked at 4.7 has functionally the same performance as a 6600 with the same clock, correct? 
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I would love to see it materialize for all 100 series boards, sadly I doubt it will happen with reports already coming in of i3s hitting close to 4ghz. Intel will not like the idea of prospective i5 buyers opting for an i3 in an H110 board because it can overclock to near i5 performance for a fraction of the cost. They will want us to fork out for a Z170 based motherboard so we can achieve these overclocks. Regardless of whether it comes to non-Z boards it is still great news for a lot of people that would otherwise have paid more for the K branded i5/i7.
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I hope ASRock will bring this to Non-Z boards.

The H110M-ITX/D3 and the B150M-ITX/D3 are the two desired boards
for my next ITX build (NES project).
990FX Extreme 9 MOD P1.70
AMD FX 8120 4GHz 1.25V
Thermalright HR-02
Patriot Viper 2x4GB 2133MHz
Samsung 850 EVO 250GB
MSI R7970 TFIII 3GB
CORSAIR VX550W
LanCool K62 Dragonlord
ASUS Xonar D2X
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Go Intel and Microsoft !
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