Question

If I have a laptop with an i7 that I decide to throttle the maximum processor state to 50% on battery power, what happens in regard to HyperThreading?

Does it get activated at 50% frequency? or does it just not really even touch the four extra threads?

Answer

My understanding is that HT is an either ON or OFF mechanism that can be controlled by your system BIOS. Regardless of whatever throttling mechanism you have enabled to clock down your CPU, HT will be enabled if you have it set that way.

This article explains the power consumption levels on an HT enabled CPU. If your concern is power saving features over performance, you could see more battery life if you turned oFf HT.

Hope this helps!

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