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A comment on Hertzbleed Attack. Parent comment

Re:Hertzbleed Attack by 2OEH8eoCRo0 on Tuesday June 14, 2022 @06:20PM (#31746747)
You can configure your CPU to always boost if you're really paranoid. It shouldn't run much hotter since the load doesn't increase, just the frequency.
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Re:Hertzbleed Attack by zx8080 on Tuesday June 14, 2022 @10:32PM (#31748478)
Tell that to my intel macbook.

Seriously, using a popular Turbo Boost Switcher makes it a lot colder and live longer on a battery

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Re:Hertzbleed Attack by throwaway742 on Wednesday June 15, 2022 @01:59AM (#31749601)
Then why isn't that the default setting?
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Re:Hertzbleed Attack by smaudet on Wednesday June 15, 2022 @02:58AM (#31749933)
I wonder if this is such a widespread issue - frequency attacks mean the cpu must actually change speed frequently in order for any attack to occur.

For a laptop how I thought it worked was cpu frequently was constant depending on performance level - so cpu should shift from low to high depending on idle state...

For a server trying to aggressively save power, frequently changing speed per operation could leak this information.

Turbo boost I thought was a setting overlong periods of time to change power levels, if you change too frequently you don't actually save much power.

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Re:Hertzbleed Attack by 2OEH8eoCRo0 on Wednesday June 15, 2022 @05:42PM (#31759815)
I didn't say temps or power won't rise, just that it's not a huge hit.
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