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Haswell Overclocking Guide [With Statistics]

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post #19601 of 19696 (permalink) Old 11-16-2017, 07:07 PM
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It sure can help with Ring stability to volt it high, but having 5GHz core and under 4GHz ring will worsen performance a bit. Something like 4.2GHz ring would be fine and most chips can do it. I've tried the high ring voltage route but from my experience it's better to raise Vcore to get proper stability than to fake force it somehow with Vring. Chips differ though.
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post #19602 of 19696 (permalink) Old 11-18-2017, 07:35 PM
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How does one find ring stability and voltage?

Personally for voltage I set AUTO voltage with current ring overclock. 42x says 1.280v with auto so little undervolt and its 1.260v

How about stability?

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post #19603 of 19696 (permalink) Old 11-18-2017, 11:43 PM
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Quote:
Originally Posted by Unknownm View Post

How does one find ring stability and voltage?

Personally for voltage I set AUTO voltage with current ring overclock. 42x says 1.280v with auto so little undervolt and its 1.260v

How about stability?

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I have been running my 4670k overclocked for the past 4 years. Between x44-46 on the multiplier with voltage set to auto. The only time use manual voltage is when stress testing the cpu. Voltage is between 1.2 to 1.35 in auto as long as your cooling solution's adequate your over clock will be sustained by using Auto on your overclock.
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post #19604 of 19696 (permalink) Old 11-19-2017, 12:44 PM
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for ring its a simple formula for the 4790k which I think holds true from most of those, but the 4690k may be different, in that it has 6MB cache.

44 core, 42 ring = same voltage 42 core, 40 ring= same voltage 46 core, 44 ring = same voltage

and the core to ring ratio doesnt matter, once you have the core voltage, the ring is the same voltage -200Mhz, can be used in any combination.
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post #19605 of 19696 (permalink) Old 11-20-2017, 09:39 AM
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Originally Posted by Technodox View Post

for ring its a simple formula for the 4790k which I think holds true from most of those, but the 4690k may be different, in that it has 6MB cache.

44 core, 42 ring = same voltage 42 core, 40 ring= same voltage 46 core, 44 ring = same voltage

and the core to ring ratio doesnt matter, once you have the core voltage, the ring is the same voltage -200Mhz, can be used in any combination.

I have found that mine is 300mhz difference,same volts

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post #19606 of 19696 (permalink) Old 11-27-2017, 04:23 PM
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I made a post here not too long ago about how better cooling gave me better overclocking results. I’ve since realised it was in fact down to me changing my BIOS’ microcode from 19 to the latest (22, released in 2017).

The water cooling loop and delid had very little to do with it. With the newer microcode an extra 100 MHz requires roughly 0.04v less than it otherwise would: 4.8ghz needs 1.3 instead of 1.34, 4.9 1.36 instead of 1.4, etc.

I cannot recommend enough that anyone still actively overclocking their haswell CPUs try updating their microcode. It’s very easy and can be done through the tool and instructions in this guide: https://www.win-raid.com/t154f16-Tool-Guide-News-quot-UEFI-BIOS-Updater-quot-UBU.html

You’ll need to download MMTool.exe and put it into the folder with the UBU.bat file. A copy can be found here under the link MMTool (aptio 5): http://voltground.com/haven/threads/13/


Flashing your modded BIOS must be done through USB BIOS Flashback on ASUS boards, or some other similar method for others to get around safety checks. Obviously I’m not responsible if you damage your hardware/brick your motherboard.

That being said, if anyone tries this and gets similar results, please say! I haven’t seen this posted at all and I suspect that’s because people lost interest in testing microcode when Haswell left the CPU limelight. Happy overclocking! smile.gif

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post #19607 of 19696 (permalink) Old 11-27-2017, 04:50 PM
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what's with 19 being best overclocker? I did this so do I just flash the BIOS is there a chance it will brick?

Also could you update others like LAN/NVMe/RAID/GOP chances of those bricking?




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post #19608 of 19696 (permalink) Old 11-27-2017, 04:56 PM
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Quote:
Originally Posted by d0mini View Post

I made a post here not too long ago about how better cooling gave me better over locking results. I’ve since realised it was in fact down to me changing my BIOS’ microcode from 19 to the latest (I think 22, the one released in 2017).

The water cooling loop and delis had very little to do with it. With the newer microcode an extra 100 MHz requires roughly 0.04v less than it otherwise would: 4.8ghz needs 1.3 instead of 1.34, 4.9 1.36 instead of 1.4, etc.

I cannot recommend enough that anyone still actively overclocking their has well CPUs try updating their microcode. It’s very easy and can be done through he tool and instructions in this guide: https://www.win-raid.com/t154f16-Tool-Guide-News-quot-UEFI-BIOS-Updater-quot-UBU.html

You’ll need to download MMTool.exe and put it into the folder with the UBU.bat file. A copy can be found here under the link MMTool (aptio 5): http://voltground.com/haven/threads/13/


Flashing your modded BIOS must be done through USB BIOS Falshback on ASUS boards, or some other similar method for others to get around safety checks. Obviously I’m not responsible if you damage your hardware/brick your motherboard.

That being said, if anyone tries this and gets similar results, please say! I haven’t seen this posted at all and I suspect that’s because people lost interest in testing microcode when Haswell left the CPU limelight. Happy overclocking! smile.gif

Thanks. I updated to 22 microcode some time ago, but I don't think I checked to see if I could lower volts, just that it was still stable. I will have to try it.

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post #19609 of 19696 (permalink) Old 11-27-2017, 05:15 PM
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I just updated everything besides my iGPU. I could flash the BIOS through mflash (BIOS) and everything works fine. RAID updated and CPU microcode updated









Now 4600Mhz NEEDS 1.360v++ to be stable prime95. I'm 4600Mhz with 1.30v, lets see if it passes prime95

EDIT: Nothing. BSOD right away like nothing changed. However everything else got updated so thanks REP+

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post #19610 of 19696 (permalink) Old 11-28-2017, 12:22 AM
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Hey guys, happy you're all trying it and glad you're at least happy with the updated modules even if it didn't help with overclocking! I guess before 22 came out, 19 was the best for overclocking, and that's why it has that message. My board had 19 on its BIOS as standard so for me at least 22 is far superior.

I also updated all my other BIOS modules without any issues, there's always a chance of bricking your board with a BIOS flash but it shouldn't be any greater than usual after using this tool, it seems pretty safe to me. If it's not giving everyone better results then maybe microcode benefits aren't as straightforward as I was hoping.

For me it is very obvious. I flashed back to microcode 19 and couldn't get 4.9GHz stable at 1.36 volts, crashed in x264 immediately. With 22 back in it can run all night.

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