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Comment by revelation | Hacker News Reader

For all of 5 minutes until it's thermally throttled. They never tell you that on the "GeekBench". But yes, for those 5 minutes, it has somewhat the same performance as one of the eight processors on the 1800x.

Frankly, 1/8th 1800x and a whole A11 is about the same power budget, so that's not entirely surprising.

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It's a single core comparison. According to geekbench a single A11 core is about the same speed as a single 1800X core.

Of course synthetic benchmarks aren't the best, but it is interesting how close arm has gotten to x86.

Yeah, also even if you could get rid of the thermal throttling, you're still dumping all that heat into the phone's body which could overheat/damage other components.

Most notably you're dumping it into the battery, which is already heating up itself just fine having to supply the extra current for your full CPU power burst. And sustained high temperatures are a surefire way to rapidly diminish the capacity of LiIon batteries. So I guess it's a good thing they have external power and a fan, even though it's dubious how much that does given the battery isn't seeing any of that airflow and is in the usual protective sleeve that doesn't exactly help thermal conductivity.

There is a reason Tesla watercool every individual metal 18650 cell.

The DeX product page explicitly says Built-in cooling fan, so they're definitely aware of overheating.

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