Elmor's Lab: Independent Core Overclocking for Haswell-E

Elmor has a small section on the forum reserved for his overclocking research projects. For example, there is a support thread for the EVC software. Yesterday Elmor shared a small software application to overclock the cores of your Haswell-E processor independently.

Quick re-cap: overclocking an Intel processor typically goes via the Turbo multipliers, a set of ratios unlocked on -K and -X processor SKUs. (Edit*) The Turbo frequency is configured on utilization basis, assigning a specific frequency to a certain type of load. For example on an 8-core part, if any three cores are in use they will be boosted to the configured 3-core ratio while the five idle cores stay at the base frequency.

For AMD processors the situation is a bit different as all cores can be clocked independently. That is why you will often see 8GHz+ CPU overclockers with all other cores clocked to 800MHz or lower. Having independent frequency control for each core helps you push for better benchmark results in single threaded benchmark applications as you are not restraint by the weaker cores in the CPU.

The software tool Elmor developed works in combination with TurboC Core and is currently only tested on the Rampage V Extreme motherboard. As Elmor writes: "When first started it will ask you 'Init per core mode?', entering 'y' will apply the current max ratio to each core. After that you use TurboV Core only to set your maximum possible ratio. If you want you can just set it to 80 and forget about it until next reboot. Whatever ratio you set in this software will now be applied on a per core basis."

You can find all details and download information in the forum thread. Good luck!


Sweden elmor says:

Thought you guys might like this experimental software for maxing out your X99 platform, it allows you to change the ratio for each core individually.

 

Only for ASUS R5E, other ASUS X99 should work in theory but not tested.

 

To fully utilize this function you need to use it along with TurboV Core. When first started it will ask you "Init per core mode?", entering "y" will apply the current max ratio to each core. After that you use TurboV Core only to set your maximum possible ratio. If you want you can just set it to 80 and forget about it until next reboot. Whatever ratio you set in this software will now be applied on a per core basis.

 

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The software should run natively on XP and newer. Windows 10 will not work right now due to the way its power management. Let me know if you have any problems.

Belgium Massman says:

Nice!

 

Have you tested this with LN2? Any interesting findings in the disparity of core overclocks?

United States xxbassplayerxx says:

Possible to do Bulldozer style OC and leave some at 4.0 and raise just one or two cores?

Sweden elmor says:

Nice!

 

Have you tested this with LN2? Any interesting findings in the disparity of core overclocks?

 

Yes, on the one chip I tested two better cores one worse. The problem is one ratio is quite a lot, I was at 129 BCLK. Might have to try and find a new sweetspot around 100.

 

Possible to do Bulldozer style OC and leave some at 4.0 and raise just one or two cores?

 

That's exactly what you can do.

Sweden lanbonden says:

This is a really neat tool, is there anything similar for 1150/1155?

Indonesia speed.fastest says:

Wow, nice tool. My 2600K limited to 5270mhz no matter what vcore, even 1c/1t vs 4c/8t limited to 5270mhz. Im sure Core #0 is the limiter :D

Sweden elmor says:

This is a really neat tool, is there anything similar for 1150/1155?

 

No, only works on X99 platform.

United States steponz says:

Cool stuff man

Poland Xtreme Addict says:

Great find :)

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