Apple M4 (8-core CPU)

Name: Apple M4 (8-core CPU)
Brand: Apple
SKU: 4340

Manufacturer: Apple

The Apple M4 with an 8-core CPU is a processor designed for both laptop and desktop use, built on a 3 nm semiconductor process and packed with 28 billion transistors. It employs big.LITTLE technology alongside Heterogeneous Multi-Processing, splitting its cores into a high-performance cluster running at 4.05 GHz and an efficiency cluster operating at 2.75 GHz.

On the memory side, the M4 supports LPDDR5 RAM at up to 6400 MHz with a maximum bandwidth of 120 GB/s and a ceiling of 24 GB total capacity, though ECC memory is not supported. The chip also features integrated graphics capable of driving two displays simultaneously, and includes security-oriented features such as TrustZone and NX bit support, along with full 64-bit compatibility.

Pros

Built on a 3 nm process with 28 billion transistors, enabling a dense and efficient chip design
Splits its 8 cores into two clock-speed tiers using big.LITTLE and HMP, allowing tasks to be distributed across performance and efficiency cores simultaneously
DDR5 memory support with a maximum speed of 6400 MHz and 120 GB/s bandwidth suits workloads that move large amounts of data quickly
Integrated graphics can drive up to two displays without requiring additional hardware
Includes both TrustZone and NX bit support, adding hardware-level security features to the platform
Compatible with both laptop and desktop form factors, broadening its range of applicable systems

Cons

Maximum memory capacity is capped at 24 GB, which may be limiting for memory-intensive workloads
ECC memory is not supported, reducing reliability for error-sensitive computing tasks
Integrated graphics are limited to two displays, with no provision for expanded multi-monitor configurations
Total thread count of 8 leaves no headroom beyond the physical core count, as there is no simultaneous multithreading indicated in the data

Who is this for?

This processor is well-suited for users who need a chip that balances responsiveness with efficiency across both laptop and desktop systems. The combination of big.LITTLE architecture with HMP makes it a practical fit for mixed workloads — such as background tasks running alongside active applications — where intelligent core assignment matters. Users who regularly work across two displays simultaneously will find the integrated graphics sufficient for that setup without needing discrete hardware, and those handling data-heavy workflows can benefit from the 120 GB/s memory bandwidth paired with DDR5 support at up to 6400 MHz.

Who is this NOT for?

This chip is less suited to environments where data integrity is critical, as it lacks ECC memory support, making it a poor fit for scientific computing, financial processing, or server workloads where memory error correction is essential. Users who require expansive multi-monitor configurations beyond two displays will find the integrated graphics limiting, as no additional display output capacity is indicated. Additionally, those with workloads that demand very large memory pools — such as high-resolution video editing or large dataset processing — may find the 24 GB memory ceiling restrictive over time.

General info:

Type	Laptop, Desktop
Has integrated graphics	✓
semiconductor size	3 nm
number of transistors	28000 million
Supports 64-bit	✓

The Apple M4 (8-core CPU) is designed for use in both laptop and desktop systems, built on a 3 nm semiconductor process that accommodates 28 billion transistors within the chip. It includes integrated graphics and fully supports 64-bit computing, making it a versatile processor suited to a range of modern computing environments.

Performance:

CPU speed	4 x 4.05 & 4 x 2.75 GHz
CPU threads	8 threads
Uses big.LITTLE technology	✓
Uses HMP	✓

The Apple M4 (8-core CPU) operates across two core clusters: four performance cores running at 4.05 GHz and four efficiency cores at 2.75 GHz, delivering a total of 8 threads. It employs big.LITTLE technology alongside Heterogeneous Multi-Processing (HMP), which allows the processor to assign tasks across both core types simultaneously rather than switching between them exclusively.

Benchmarks:

Integrated graphics:

supported displays	2

The integrated graphics in the Apple M4 (8-core CPU) support connectivity to up to 2 displays simultaneously, allowing multi-monitor setups without the need for a discrete graphics card.

Memory:

RAM speed (max)	6400 MHz
maximum memory bandwidth	120 GB/s
DDR memory version	5
maximum memory amount	24GB
Supports ECC memory	✕

The Apple M4 (8-core CPU) uses DDR5 memory, supporting speeds of up to 6400 MHz and a maximum bandwidth of 120 GB/s, with a ceiling of 24 GB total memory capacity. ECC memory is not supported by this processor.

Features:

Has TrustZone	✓
Has NX bit	✓

The Apple M4 (8-core CPU) includes two notable security features: TrustZone, which provides hardware-level isolation for sensitive operations, and the NX bit, which helps prevent certain classes of malicious code from executing in memory regions designated as non-executable.

Final Verdict

The Apple M4 (8-core CPU) is a well-rounded processor that brings together a refined 3 nm design, DDR5 memory support, and a dual-cluster core arrangement into a chip that covers both laptop and desktop deployments. Its big.LITTLE architecture with HMP stands out as the defining characteristic, enabling nuanced task distribution that suits a broad range of everyday and data-intensive workloads. While the 24 GB memory cap and absence of ECC support naturally limit its reach into more demanding professional or error-critical environments, these constraints reflect a deliberate scope rather than an oversight. For users whose needs fall within that scope — responsive multitasking, dual-display output, and high-bandwidth memory throughput — the M4 delivers a coherent and capable platform.