Sign in to follow this  

Haswell individual core overclocking

Recommended Posts

On various Haswell based processors I understand it is possible to individual clock cores with specific ratios, so it is possible, stability allowing, to overclock one core higher the rest.  It occurred to me that's a good combination with FSX affinity mask, i.e. configure your main FSX thread that typically runs at 100% on your highest overclocked core.  This perhaps would be core #0, or core #1 with affinity mask.  And to get the absolute best for the main thread, maybe even reduce the overclock on the other cores a little to push the main thread overclock even further.


So a couple of big assumptions here:

a) That the main simulator thread always runs on the same core.  Windows task manager makes me think it does as it is always the same core (#1 with my affinity mask) that's 100%.  Is that the way windows task scheduling works?


b) That a single core can be overclocked enough compared with the others to make the exercise worthwhile.


Anyone been down this road before?



Share this post

Link to post
Share on other sites
Help AVSIM continue to serve you!
Please donate today!

I believe turbo does this anyway, so yes, asynchronous overclocking is an option. In fact I've seen Asus YouTube videos where the rep JJ suggests it.


I gave it a bash some time ago with my 3770K, but my PC went bonkers. It was a different issue that caused the problem, not asynchronous overclocking, but I haven't tried again since.


Regardless of affinity mask settings, given that most CPU's are limited by the hottest core, I don't see why overclocking the hottest core a little less, and the others more, wouldn't pay dividends. It's the hottest core that usually limits us.

Share this post

Link to post
Share on other sites

Your content will need to be approved by a moderator

You are commenting as a guest. If you have an account, please sign in.
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this