Maybe Apple over promised and under delivered on 14’s battery life, and so this time they’re being conservative and aiming to exceed last year’s goals, which isn’t compelling marketing, so they don’t mention it. Likely it was not on purpose, googling it shows there’s been issues with the 14 pro’s battery degradation.
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Other iPhone 15 pro battery life [Merged]
- Thread starter arjuna137
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So the CPU is 3nm, the battery capacity increased by 11%, but the battery life stays the same? and the new chip is only 10% faster in performance cores and the efficiency core is just "also faster"??
Makes no sense....maybe TSMC is stagnating, or Apple is just resting on their laurels as Qualcomm is not catching up.
Stacked battery tech is rumored for the 16 Pro/Pro Max. That should provide a significant boost in battery life and I have a feeling they’ll highlight that when they introduce the phones.They’re reserving the longer battery “feature” for next year’s lineup.
Bigger battery capacity.
9to5mac.com
iPhone 15 battery capacity slightly higher across all four models
A regulatory database has revealed details of the iPhone 15 battery capacity for each of the four models, and shows...
9to5mac.com
Hardly a bump, only 100 or so mAh, won’t make any difference so Apple figures correctBigger battery capacity.
iPhone 15 battery capacity slightly higher across all four models
A regulatory database has revealed details of the iPhone 15 battery capacity for each of the four models, and shows...
It's not a myth at all. That's a very hard headed stance to take. The density is directly related to the size of the chip and the nm used. 3nm gives great efficiency improvements.
Transistor density and power efficiency are two separate things.
That's why TSMC always states, you can get X performance improvement or Y lower power consumption. Transistor density is a third factor but doesn't mean power efficiency.
I’d be really surprised that combo of N3 + marginally higher battery capacity doesn’t lead to some minor real world bump in battery life.
Sure, the efficiency of the new node depends on how Apple tunes it, but why wouldn’t they go for some efficiency benefit for a smartphone use case? Not like the early Geekbench scores indicate impressive gains.
Sure, the efficiency of the new node depends on how Apple tunes it, but why wouldn’t they go for some efficiency benefit for a smartphone use case? Not like the early Geekbench scores indicate impressive gains.
Because each node provides less and less benefit. For N4 vs. N3, you can choose between 10% performance or 10% power efficiency. We already know A17 Pro clock speed is up by 10% compared to A16. That leaves nothing left for power efficiency.
Even increases in transistor density is quickly slowing down. This is why everyone is talking about stacking chips and packaging technology.
Do we know if that 10% ST bump was with no IPC improvement?
I know the node benefits are diminishing with each jump but I could swear it was more than max 10% efficiency. Might’ve been looking at comparisons with older N5 node, however.
ST performance is up by 12% or 15% so a small portion is IPC.
Almost all the numbers we see TSMC quote are against N5 v1.0. When you do the math to factor in N5P (A15) then N4 (A16) and finally N3, it's down to about 10%.
transitory density does equal efficiency. If they up the freq and capability of the cpu that's on them but a 3nm node is going to be much more efficient than a 5nm node if all else is kept equal.
For me there are only two explanations:
- the cpu needs as few energy, that a decrease in energy is not noticeable anymore, because of other system components need a lot more( display, modem, motherboard, ram)....but the modem was also improved according to energy demand
- machine learning does a lot in the background and because of this a lot of energy is needed in addition
- the cpu needs as few energy, that a decrease in energy is not noticeable anymore, because of other system components need a lot more( display, modem, motherboard, ram)....but the modem was also improved according to energy demand
- machine learning does a lot in the background and because of this a lot of energy is needed in addition
No, it doesn't - especially if you want to communicate using industry standard terms. The term efficiency refers to work done per unit of energy.
Apple battery tests show the same amount of work done (video and audio playback hours) with essentially the same amount of energy (battery capacity).
That's way too complicated. Apple battery tests are very straightforward. Apple loops a particular video and audio tracks until the device shuts down. It puts a very low demand on other components. There's no machine learning or whatever happening in the background.
People are doing mental gymnastics trying to explain the obvious. They were fed unrealistic power and performance expectations around N3. The gain from N3 was the 10% boost in clock speed for A17 Pro. There is little or no power efficiency gains.
In addition to what’s already been called out, I see these possible contributors:
- Apple touted longer sustained performance. While that will mean higher performance overall, it also means that it can consume more power for longer without throttling (which would reduce power consumption).
- more RAM means more power consumption.
- like you said, other components could require more power (E.g. faster main storage). The upgrade to WiFi6E likely means higher power consumption (it does in routers) and the Ultrawideband 2 chips could be thirstier, too (especially when in Precision Finding mode)
- and all of the new computation photography enhancements (SmartHDR5, next gen portrait mode, etc.) plus AI features (on device Siri processing, ML driven text prediction, etc.) can require more processing power than their predecessors.
- brighter screen == more power
In contrast, we also see better battery life for certain scenarios, like streaming video (likely due to the new AV1 encoder).
- Apple touted longer sustained performance. While that will mean higher performance overall, it also means that it can consume more power for longer without throttling (which would reduce power consumption).
- more RAM means more power consumption.
- like you said, other components could require more power (E.g. faster main storage). The upgrade to WiFi6E likely means higher power consumption (it does in routers) and the Ultrawideband 2 chips could be thirstier, too (especially when in Precision Finding mode)
- and all of the new computation photography enhancements (SmartHDR5, next gen portrait mode, etc.) plus AI features (on device Siri processing, ML driven text prediction, etc.) can require more processing power than their predecessors.
- brighter screen == more power
In contrast, we also see better battery life for certain scenarios, like streaming video (likely due to the new AV1 encoder).
It really makes nothing as if they can solve the battery problems on the 14 pro series phones others have had. I said it before and say it now that as long as battery stays close to or slightly better then the 14 pro series folks should not get wrapped around the axle. It is a mobile hand computer
Looks like the expectation that battery life improved despite Apple’s claims are true.
Tom's Guide's Mark Spoonaeur on battery life:
Tom's Guide's Mark Spoonaeur on battery life:
Interestingly they show the 13 Pro Max as lasting less, which is definitely not the case for me and many others here. Regardless, I am happy the 15 Pro Max shows as lasting more even if just 20 minutes, and of course I hope they test against phones with 100% battery health.
For those who had the 14 Pro how long did you use your phone per day and what was your battery health?