AMD Ryzen AI 5 340

Manufacturer: AMD

The AMD Ryzen AI 5 340 is a mid-range processor designed for both laptop and desktop platforms, built on a compact 4 nm semiconductor process. It employs big.LITTLE technology to balance workload distribution across its six cores, and its 12-thread configuration allows it to handle moderately demanding multitasking scenarios with reasonable efficiency. The chip operates within a 28W thermal design power envelope, making it a practical fit for thin-and-light portable systems as well as compact desktop builds.

On the performance side, the Ryzen AI 5 340 reaches a turbo clock speed of 4.8 GHz, supported by 6 MB of L2 cache and 16 MB of L3 cache. It recorded a PassMark score of 20,210 and a Geekbench 6 multi-core result of 8,951. The integrated Radeon 840M graphics support up to four displays simultaneously, reach a GPU turbo of 2,900 MHz, and are compatible with DirectX 12 Ultimate. Memory support extends to DDR5 at up to 8,000 MHz across two channels, with a maximum addressable capacity of 256 GB. The processor also includes a broad set of instruction sets such as AVX2, AES, FMA3, and SSE 4.2, and connects via PCIe 4.0.

Pros

Supports both laptop and desktop platforms, offering flexibility across different form factors
DDR5 memory support with speeds up to 8,000 MHz and a maximum capacity of 256 GB provides substantial memory bandwidth and headroom
The integrated Radeon 840M GPU can drive up to four displays simultaneously without requiring a discrete graphics card
big.LITTLE core architecture allows the processor to distribute workloads across cores with different roles, aiding efficiency
A broad set of instruction sets including AVX2, AES, and FMA3 enables compatibility with a wide range of software workloads
The 28W TDP makes it suitable for thermally constrained systems such as thin-and-light laptops

Cons

The multiplier is locked, removing any possibility of manual clock speed adjustments beyond factory settings
ECC memory is not supported, limiting its suitability for error-sensitive or mission-critical computing environments
Base clock speeds of 2 GHz across all six cores are relatively low, with performance depending heavily on sustained turbo behavior
Single-core Geekbench 6 score of 2,280 reflects modest per-core throughput for single-threaded workloads

Who is this for?

This processor is a solid fit for users building or buying thin-and-light laptops or compact desktop systems where thermal constraints are a real consideration, given its 28W TDP. The integrated Radeon 840M with support for up to four simultaneous displays makes it well-suited for multi-monitor productivity setups that do not require discrete graphics. Additionally, its DDR5 memory support at up to 8,000 MHz and a 256 GB capacity ceiling appeals to users running memory-intensive productivity or creative workloads who still want a power-efficient platform.

Who is this NOT for?

Users who rely on heavily single-threaded applications may find the processor's single-core throughput limiting, as reflected in its modest single-core benchmark scores. The locked multiplier makes it a poor fit for enthusiast or overclocking builds where fine-grained clock speed control is expected. Similarly, those working in environments that demand ECC memory for data integrity — such as certain server, scientific computing, or financial workloads — will need to look elsewhere, as ECC support is absent.

General info:

Type	Laptop, Desktop
Has integrated graphics	✓
Thermal Design Power (TDP)	28W
semiconductor size	4 nm
CPU temperature	100 °C
PCI Express (PCIe) version	4
Supports 64-bit	✓

The AMD Ryzen AI 5 340 is designed for both laptop and desktop use, built on a 4 nm semiconductor process that contributes to its relatively modest 28W thermal design power. It includes integrated graphics and fully supports 64-bit computing. The processor connects via PCIe 4.0 and is rated to handle a maximum operating temperature of 100 °C, reflecting its thermal headroom under sustained workloads.

Performance:

CPU speed	3 x 2 & 3 x 2 GHz
CPU threads	12 threads
turbo clock speed	4.8GHz
Has an unlocked multiplier	✕
L2 cache	6 MB
L3 cache	16 MB
Uses big.LITTLE technology	✓
clock multiplier	20

The Ryzen AI 5 340 features a six-core configuration using big.LITTLE technology, pairing two groups of three cores each running at 2 GHz base, with a turbo clock speed reaching up to 4.8 GHz and a clock multiplier of 20. Across its 12 threads, the chip is equipped to manage moderately parallel workloads, backed by 6 MB of L2 cache and 16 MB of L3 cache for responsive data access. The processor does not include an unlocked multiplier, meaning clock speeds cannot be manually adjusted beyond factory-defined limits.

Benchmarks:

PassMark result	20210
PassMark result (single)	3882
Geekbench 6 result (multi)	8951
Geekbench 6 result (single)	2280
PassMark result (overclocked)	22769

In benchmark testing, the Ryzen AI 5 340 achieved a PassMark multi-core score of 20,210, with a single-core result of 3,882. Under overclocked conditions, the PassMark score rises to 22,769, reflecting additional headroom in sustained performance. On Geekbench 6, the processor recorded a multi-core score of 8,951 and a single-core score of 2,280, rounding out a consistent picture of its measured performance across multiple testing platforms.

Integrated graphics:

GPU name	Radeon 840M
GPU turbo	2900 MHz
DirectX version	DirectX 12 Ultimate
supported displays	4

The Ryzen AI 5 340 includes an integrated Radeon 840M GPU, capable of reaching a turbo frequency of 2,900 MHz. It supports up to four simultaneous displays, making it a practical option for multi-monitor setups without a discrete graphics card. The GPU is compatible with DirectX 12 Ultimate, enabling access to modern graphics features within that API standard.

Memory:

RAM speed (max)	8000 MHz
DDR memory version	5
memory channels	2
maximum memory amount	256GB
Supports ECC memory	✕

The Ryzen AI 5 340 supports DDR5 memory across two channels, with a maximum RAM speed of 8,000 MHz. It can address up to 256 GB of system memory, providing substantial headroom for memory-intensive workloads. ECC memory is not supported, which is a consideration for applications that require error-correcting capabilities.

Features:

instruction sets	MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2
uses multithreading	✓
Has NX bit	✓

The Ryzen AI 5 340 supports multithreading and includes the NX bit for hardware-level memory protection. It is compatible with a broad range of instruction sets, including MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2, covering everything from legacy multimedia extensions to AVX2-accelerated floating-point and cryptographic operations.

Final Verdict

The AMD Ryzen AI 5 340 presents a well-rounded specification set for users seeking an efficient, versatile processor across laptop and desktop form factors. Its DDR5 memory support paired with the integrated Radeon 840M GPU makes it a practical choice for productivity-focused builds that demand multi-display capability without the addition of discrete graphics. While its locked multiplier and modest single-core output place clear boundaries on its appeal to performance enthusiasts, the chip's thermal efficiency, broad instruction set compatibility, and generous memory ceiling give it a coherent and credible position in the mainstream computing segment. For users prioritizing platform flexibility and power efficiency over raw peak performance, the Ryzen AI 5 340 delivers a balanced and purposeful package.