Reply to post: Thermal considerations?

OpenBSD disables Intel’s hyper-threading over CPU data leak fears

Crazy Operations Guy

Thermal considerations?

I've always wondered if the cooling effects of a core not being used all the time would give you enough room in the thermal budget to increase the number of cores overall.

I figure that if a core's usage with hyper-threading is less than half of its usage when it is turned on, that could free up enough electrical energy and thermal capacity to add in another entire core. The break-even might even be higher than that because you'd be dissipating the same amount of heat over a larger surface area.

It'd add to the complexity of the chip, but if you can squeeze out more performance, it could be worth it.

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