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Half as Hot (mander.xyz)

submitted 20 hours ago by [email protected] to c/[email protected]

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[–] [email protected] 43 points 16 hours ago (2 children)

This knowledge comes in handy with marketing BS around CPU coolers. If an aftermarket cooler gets a CPU to 35C when the stock cooler is at 70C, marketing will sometimes claim it cut temperatures in half.

[–] [email protected] 1 points 48 minutes ago

perhaps it cuts generated temperature in half, ie idle cpu is 50C, stock 70C, and aftermarket 60C

[–] [email protected] 9 points 11 hours ago* (last edited 9 hours ago) (4 children)

I mean.... that's literally half though

edit: I am not a science man and I am in over my head in this argument

[–] [email protected] 11 points 7 hours ago* (last edited 7 hours ago) (1 children)

to make the argument even simpler, that phrase wouldn't even mean the same thing to an english person as it would to an american.

In fahrenheit those temps would convert to 95f and 158f.

[–] [email protected] 2 points 1 hour ago* (last edited 1 hour ago)

But °C was mentioned in the units, and its well understood that 0°C is a cold temperature for humans.

I'm not a fan of marketing doublespeak either, but I think the right scale and right terminology was used here. They cut the temperature in half, in Celsius, on the basis that 0°C is very cold.

[–] [email protected] 10 points 9 hours ago (1 children)

If you convert those temperatures to Kelvin, they become 308K and 343K. Since Kelvin is absolute and we're measuring the same material, this tells you how much more thermal energy is there and their actual proportion to each other.

[–] [email protected] 5 points 9 hours ago (1 children)

thanks, this makes a lot more sense.

That being said, 70C down to 35C is a huge difference, relative to the temperature ranges we live in

[–] [email protected] 1 points 35 minutes ago

It would certainly be a good CPU cooler. Marketing just ran away with claims they can't back up.

Here's an actual example of this sort of thing (starting around 3:22): https://www.youtube.com/watch?v=w8kprUGy57E&t=233s

[–] [email protected] 11 points 10 hours ago

But it's not.

Celsius and Faernheit are interval scales, not rational scales. The absolute change from one number to the next is consistent, but since you can go into the negatives, 1 is not double 2.

Kelvin and Rankine are rational because they use an absolute zero.

[–] [email protected] 8 points 10 hours ago

308.15K is not half of 343.15K