Английская Википедия:Apple M3

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Apple M3 is a series of ARM-based system on a chip (SoC) designed by Apple Inc. as a central processing unit (CPU) and graphics processing unit (GPU) for its Mac desktops and notebooks. It is the third generation of ARM architecture intended for Apple's Mac computers after switching from Intel Core to Apple silicon, succeeding the Apple M2. Apple announced the M3 on October 30, 2023, at its Halloween-themed Scary Fast online event, along with models of the iMac and the MacBook Pro using the M3.

Design

The M3 series is Apple's first 3 nm design for desktops and notebooks. It is manufactured by TSMC.

CPU

• M3: 8‑core CPU with 4 performance cores and 4 efficiency cores
• M3 Pro: 11‑ or 12‑core CPU with 5 or 6 performance cores and 6 efficiency cores
• M3 Max: 14‑ or 16‑core CPU with 10 or 12 performance cores and 4 efficiency cores

GPU

The redesigned GPU includes features like Dynamic Caching, Mesh Shading, and hardware-accelerated ray tracing.

The Dynamic Caching technology allocates local memory in real time. Unlike conventional approaches, Dynamic Caching ensures that only the precise amount of memory required for a task is used, thereby optimizing memory usage and potentially enhancing performance and efficiency. This is particularly beneficial for graphics-intensive tasks, where dynamic memory allocation can be critical.

Memory

The M3's Unified Memory Architecture is similar to the M2 generation; M3 SoCs use 6,400 MT/s LPDDR5 SDRAM. As with prior M series SoCs, this serves as both RAM and video RAM. The M3 has 8 memory controllers, the M3 Pro has 12 and the M3 Max has 32. Each controller is 16-bits wide and is capable of accessing up to 4 GiB RAM.

The M3 Pro and 14-core M3 Max have lower memory bandwidth than the M1/M2 Pro and M1/M2 Max respectively. The M3 Pro has a 192-bit memory bus where the M1 and M2 Pro had a 256-bit bus, resulting in only 150 GB/sec bandwidth versus 200 GB/sec for its predecessors. The 14-core M3 Max only enables 24 out of the 32 controllers, therefore it has 300 GB/sec vs. the 400 GB/sec for all models of the M1 and M2 Max, while the 16-core M3 Max has the same 400 GB/sec as the prior M1 and M2 Max models.

Other features

The M3 contains dedicated neural network hardware in a 16-core Neural Engine capable of executing over 18 trillion operations per second. Other components include an image signal processor, a PCIe storage controller, a Secure Enclave, and a USB4 controller that includes Thunderbolt 4 support.

AI

Apple specifically targeted AI development and workloads, both with the Neural Engine and with the increased maximum memory (128 GiB) of the M3 Max, allowing AI models with high numbers of parameters. Apple claims a 15% performance improvement for AI workloads on the M3 (compared to the previous generation M2).

Video

Supported codecs on the M3 include 8K H.264, 8K H.265 (8/10bit, up to 4:4:4), 8K Apple ProRes, VP9, JPEG and AV1 decoding.

Products that use the Apple M3 series

M3

• MacBook Pro (14-inch, Nov 2023)
• iMac (24-inch, 2023)

M3 Pro

• MacBook Pro (14-inch and 16-inch, Nov 2023)

M3 Max

• MacBook Pro (14-inch and 16-inch, Nov 2023)

Variants

The table below shows the various SoCs.

Variant	CPU		Graphics		Neural Engine cores	Memory		Transistor count
	P-coresШаблон:Efn	E-coresШаблон:Efn	GPU CoresШаблон:Efn	ALU		ControllersШаблон:Efn	Bandwidth (GB/s)
A17 Pro	2	4	6	768	16	4	51.2	19 billion
M3	4	4	8	1024		8	102.4	25 billion
			10	1280
M3 Pro	5	6	14	1792		12	153.6	37 billion
	6		18	2304
M3 Max	10	4	30	3840		24	307.2	92 billion
	12		40	5120		32	409.6

See also

• Apple silicon