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>To be honest, I wish my iPad's chip was slower! I can't do anything other than watch videos and use drawing programs on an iPad, why does it need a big expensi
by aurareturn 3y ago
>To be honest, I wish my iPad's chip was slower! I can't do anything other than watch videos and use drawing programs on an iPad, why does it need a big expensive power hungry and environmentally impactful CPU when one 1/10 the speed would do?
A faster SoC can finish the task with better "work done/watt". Thus, it's more environmentally friendly. Unless you're referring to the resources dedicated to advancing computers such as the food engineers eat and the electricity chip fabs require.
- mort96 3y agoA faster and more power hungry SoC can finish the task with better work done per joule if it is fast enough to offset the extra power consumption. It is my understanding that this is often not the case. See e.g efficiency cores compared to performance cores in these heterogeneous design; the E cores can get more done per joule AFAIU. If my understanding is correct, then removing the P cores from the M4 chip would let it get more work done per joule. Regardless, the environmental impact I'm thinking about isn't mainly power consumption.
- pertymcpert 3y agoThe P cores don't get used if they're not needed. You don't need to worry. Most of your every use and background work gets allocated to E cores.
- mort96 3y agoBut they do get used. And they take up space on die.
- pertymcpert 3y agoWhen do they get used?
- mort96 3y agoI don't know the details of iOS's scheduler or how it decides which tasks should go on which kind of core, but the idea is to put tasks which benefit from high performance on the P-cores, right?