cmaier

macrumors Core
Original poster
Jul 25, 2007
23,691
29,477
California
A15 has the same core configuration (2+4) as A14, which suggests to me that they are of similar relative complexity as Firestorm vs. IceStorm, and the new high performance cores aren’t hardware-multithreaded. Which suggests to me that rumors of 8+2 or 10+2 for M1X/m2 are likely not right. Rumors only made sense if the cores were radically different in relative performance - either the low power cores can handle more pipelines or the high power cores can multi thread to compensate for blocking low priority threads. Based on all that, I doubt the 8+2/10+2 rumors. Also means that the new MBPs coming next month may indeed have M1X instead of M2(x).
 

Gnattu

macrumors 6502a
Sep 18, 2020
617
679
In fact, from the figures Apple published, Firestorm is almost as fast as the A15's big core...
 
Last edited:
Comment

Argon_

macrumors 6502
Nov 18, 2020
310
163
In fact, from the figures Apple published, the A15's big core is almost as fast as Firestorm...
Do you mean little core? Because the big core should be substantially faster than Firestorm, the big core of the A14 generation.
 
Comment

Joelist

macrumors 6502
Jan 28, 2014
440
363
Illinois
If the A15 performance gains on the performance and efficiency cores are correct, the A15 efficiency cores are in the same speed class as Firestorm. So a 2+4 arrangement is going to be crazy fast - it's like having 6 Firestorms.
 
Comment

Kung gu

macrumors 65816
Oct 20, 2018
1,155
1,857
If the A15 performance gains on the performance and efficiency cores are correct, the A15 efficiency cores are in the same speed class as Firestorm. So a 2+4 arrangement is going to be crazy fast - it's like having 6 Firestorms.
Can you please elaborate everyone is saying there has been no CPU improvement.
 
  • Like
Reactions: Macintosh IIcx
Comment

Gerdi

macrumors 6502
Apr 25, 2020
291
142
Sounds to me as no performance uplift for the cores at all. Transistor budget was going into GPU, AI compute, additional video encoder/decoders and perhaps system level cache.
 
Comment

Sydde

macrumors 68020
Aug 17, 2009
2,263
6,823
IOKWARDI
Size difference relative to A14: M1 +35%, A15 +27%. This is with the addition of one GPU core and a video en-decoder to the A15. My WAG would be that M2 will go to 2+6 CPU, no more than 4 more (improved) GPU cores and the video processor (probably no change in neural). Apple is inching toward offloading heavy work to dedicated logic, which makes a lot of sense. CPU and GPU cores will not proliferate very quickly because they will have much to do as dedicated logic starts to take on the heavy workloads.
 
Comment

Gnattu

macrumors 6502a
Sep 18, 2020
617
679
It wouldn't make sense for an A15 performance core to be almost as powerful, in other words less than an A14 core. In that case why not use a binned A14.
My bad, what I meant is that A15's big core does not have observable performance advantage over Firestorm.

Edited my original post
 
  • Like
Reactions: Argon_
Comment
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.