w5jck
Suspended
Or he did the math backwards. 24 is a 50% increase from 16. 16 is a 33.333% decrease from 24.
Technically, 24 is 150% more than 16. 16 is 66.667% of 24.
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Is the M2 really faster than the M1?
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Technically, 24 is 150% more than 16. 16 is 66.667% of 24.
EugW
macrumors P6
No 24 is 50% more than 16. It's 150% of 16.
mi7chy
Suspended
Mistake was reversing the dividend and divisor.
16 / 24 = 0.66 (this reads as 16 is 66.6% of 24 or 33.3% less than 24)
What was meant was:
24 / 16 = 1.5 (reads as 24 is 1.5x or 150% of 16 or 50% more than 16)
To verify:
16 * 1.5 = 24 (24 is 1.5x or 150% of 16 or 50% more than 16, correct)
16 * 1.3 = 21.3 (wrong)
16 / 24 = 0.66 (this reads as 16 is 66.6% of 24 or 33.3% less than 24)
What was meant was:
24 / 16 = 1.5 (reads as 24 is 1.5x or 150% of 16 or 50% more than 16)
To verify:
16 * 1.5 = 24 (24 is 1.5x or 150% of 16 or 50% more than 16, correct)
16 * 1.3 = 21.3 (wrong)
thenewperson
macrumors 65816
Maybe your questions will be answered when the computer is in the hands of most people.
Have patience.
Have patience.
Apple M2 Die Shot and Architecture Analysis – Big Cost Increase And A15 Based IP
Apple announced their new 20 billion transistor M2 SoC at WWDC.
semianalysis.substack.com
Their floor plan die annotation looks just about the same as mine. A few notes about their M2 analysis:Apple M2 Die Shot and Architecture Analysis – Big Cost Increase And A15 Based IP
Apple announced their new 20 billion transistor M2 SoC at WWDC.
- Bottom left (A1 & A2) are dual Secure Enclaves
- Next to those, the PHYs are PCIe lanes
- The two unhighlighted blocks at the bottom I think are serial I/O
- The larger purple PHY is high speed I/O
- Next to the HS I/O at the bottom far right is the display engine
- Top right are dual image processors for the media engine
Edit: Just a note about the semi analysis people in your link— they’ve always been doom and gloom about Apple. So while I usually agree with their technical observations, I disregard their other takes and conclusions.
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thenewperson
macrumors 65816
It's hilarious how much Dylan refuses to show anything to back up the brain drain claims.
George Dawes
Suspended
I suppose things will improve when we receive the inevitable pro , max and ultra versions of the m 2
They should be interesting….
They should be interesting….
Why did you decide these must be two Secure Enclaves? Apple only needs one Secure Enclave, there's no point in a second. M1/Pro/Max only has one (just checked using IORegistryExplorer on a M1 Max, confirmed that only one SEP shows up in the device tree). And why would these dual SEPs be paired with SERDES/PHY blocks? They're far more likely to be things associated with those PHYs (to minimize route distance to the PHY).
I should have written "dual Secure Enclave cores." I had wondered the same thing about it being paired to PHY when I was studying the M1 back in November. I came to the conclusion that the SSD and camera are coupled to the Secure Enclave and require high speed PHY anyway, so it makes sense to lay them out right next to each other.
Anyway, you might ask, "why dual core?" And my answer would have been for you to have a look at the M1 sample report from systemplus.fr. However, it seems that they were just absorbed into another company-- and by "just," I mean that when I posted above (yesterday), their website still existed and the sample report was available. That no longer appears to be the case, so here are some relevant images I extracted from the M1 sample report:
The layout of the M2 is quite similar to the M1, so it's pretty straightforward to extrapolate the floor plan.
But those images from the former systemplus.fr don't address my question: why are we even thinking there are two cores? They just assert there are two, based on... well, I don't know what they're basing it on. Apple's own documentation on the Secure Enclave and its capabilities makes no mention of two cores:
The Secure Enclave
Secure Enclave is a dedicated secure subsystem in the latest versions of iPad, iPhone, Mac, Apple TV, Apple Vision Pro, Apple Watch, and HomePod.
The blocks that these people have tagged as Secure Enclave in these images also don't look like a Secure Enclave to me. How would some random guy know what it looks like? I don't, but I do know what it shouldn't look like, and in this case it's "anything as large as those blocks". The SE, including its CPU, should be tiny. There's no need for speed here. Even the M1's E cores qualify as fast, huge, and hot relative to the minimalistic microcontroller-class "ASC" cores used in the SEP and several other Apple Silicon subsystems.
Why small? Security engineers and analysts often talk about "attack surface", a concept referring to how much 'surface area' of the hardware or software is subject to potential attacks. One of the very best known ways to simultaneously minimize attack surface and make the design highly auditable / verifiable by formal methods is to keep it incredibly minimalistic. The Secure Enclave isn't designed for speed, it exists to be a hopefully impenetrable keeper of secrets.
So while I could be wrong about this, I don't think the Secure Enclave is a block big enough to easily pick out in these pictures.
Along those lines... the Apple doc I linked mentions that SSD encryption/decryption is performed by an AES engine outside the Secure Enclave. There is a secured path for the SE to feed the AES engine key data, designed to make leaking that key to software impossible, but the SE itself is not in the datapath. (Reinforcing the point that the SE is a keeper of secrets, not a doer of work.)
You might then say "well those blocks must be the AES engines", but here again we have a case where the docs only mention one engine. There's only one internal SSD, no need for two. Also, here is where I get to bring actual personal experience to bear: I've implemented cryptographic blocks before and I wouldn't expect an AES256 engine to be anywhere near that big and complicated.
My answer is that I don’t know. SystemPlus is/was a firm like TechInsights, so I based some of my research on that and disclosed it (refer to the first post you took exception to). So, shoot them an email asking them and kindly report back.
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Le0M
macrumors 65816
This I think it's false. Because there is an even bigger battery on the new Air, and yet it delivers the same amount of usage time (18 hours).
Le0M
macrumors 65816
I don't think we should ever consider upgrading one or two years after we bought our device. Unless we need as much power as possible for our jobs.
This replacing devices every (other) year should stop for the sake of this planet.
jav6454
macrumors Core
That's cause the idle wattage consumption of the M2 is higher than the M1. Furthermore, the power consumption during work, the M1 surpasses the M2.
Overall, the M1 is much more power efficient.
I don't think many people replace their Macs or iPads every year and since iPhones started getting as expensive as laptops, they aren't being replaced nearly as frequently either.
I don't think anyone should be thinking of swapping out an M1 MBA. If they are, they bought the wrong laptop.
The more interesting question: is the M2 MBA worth an extra $200 over the M1 MBA. For schools or businesses buying in bulk, I suspect not.
Le0M
macrumors 65816
Well, I do see VERY few people with iPhone SE 1st gen and iPhone 7 or 8. Most of them got the latest 11, 12 or 13.
At least where I live, in northern Italy.
StudioMacs
macrumors 65816
11 pro has 3 cameras, and the regular 11 is a larger thicker model with aluminum instead of stainless bands.
Pretty much like the XR. With most cases, you can't even tell if the band is stainless steel or aluminum.
Le0M
macrumors 65816
Cameras on the back are different. I have a keen eye for these things.
StudioMacs
macrumors 65816
Granted. For myself, the only phone I used a case on was the 5s, but I don’t drop things, and I don;t buy things I can’t afford to drop.