AMD Ryzen AI 5 340

The AMD Ryzen AI 5 340 is a 6-core, 12-thread mobile processor built on the Zen 5 architecture (Krackan Point) and fabricated on TSMC's 4nm process. It runs at a base clock of 2000 MHz with a boost of 4.8 GHz, carries a 28W TDP, and integrates a Radeon 840M GPU. With an average benchmark score of 26909, it lands in the 84th percentile of all CPUs, placing it as a capable mid-range mobile part that sits within a hair of several established rivals.

How It Compares

Against the AMD Ryzen 5 7545U, the Ryzen AI 5 340 posts an average score of 26909 versus 26849 — a delta of 0.2% in favor of the newer part. The difference is negligible in real-world terms; both chips occupy the same performance tier, though the 340's Zen 5 cores and 4nm process give it a slight edge in raw throughput.

The Intel Core i7-1370P is marginally faster, with an average score of 26991 versus 26909, a delta of -0.3%. That means the Ryzen trails by less than a third of a percent — a statistical tie. The 1370P is a higher-TDP part, so the Ryzen's near-parity at a much lower power envelope is notable.

The Intel Core i7-12700H averages 27006, which is 0.4% ahead of the Ryzen AI 5 340. Again, the gap is within noise. The 12700H is a performance-class H-series chip, while the 340 is a low-power U-class part; their equivalence in average score underscores the efficiency of the Zen 5 design.

Finally, the Intel Core i7-1280P averages 26812, which the Ryzen beats by 0.4%. This is the largest delta among the four rivals, but still under half a percent. The 340 edges out the 1280P in the aggregate, reinforcing its position as a well-balanced mobile processor that trades blows with Intel's 12th- and 13th-gen parts.

Power and Thermals

The Ryzen AI 5 340 is rated at a 28W TDP, a figure that places it firmly in the ultra-low-power class for mobile processors. This is the kind of power budget found in thin-and-light laptops, 2-in-1s, and fanless or near-silent designs. The 4nm TSMC process is a key enabler here — a smaller node typically reduces leakage and switching losses, allowing the 6 Zen 5 cores to hit a 4.8 GHz boost without demanding an aggressive cooling solution. A modest heatpipe or even a well-designed passive cooler can handle this chip in most chassis. The die size of 195 mm² is relatively compact, further easing thermal management. While the TDP is the only power number in the data, the combination of low TDP, modern process, and small die strongly implies that the 340 belongs in mainstream ultraportables rather than gaming or workstation laptops.

Single-Thread vs Multi-Thread Behavior

The split between single-thread and multi-thread performance tells a clear story. In Cinebench R23, the Ryzen AI 5 340 scores 2425 in single-core and 17178 in multi-core. The multi-core figure is more than seven times the single-core number, indicating that the 6-core/12-thread configuration scales well under parallel loads — a hallmark of a well-implemented SMT design. The single-thread score of 2425 is strong for a 28W part, reflecting the high 4.8 GHz boost clock and the efficiency of the Zen 5 architecture. In PassMark, the single-thread score is 3873, while the multithread score reaches 20196 — again showing a large multiplier. For real workloads, this means the chip will feel snappy in everyday tasks like web browsing, office apps, and light content creation, where single-thread performance dominates. Meanwhile, rendering, video encoding, and other heavily threaded tasks will see a substantial boost from the 12 threads. The data suggests a balanced design: it is not a workstation monster, but it does not sacrifice responsiveness for multi-core grunt either.

FAQ

Q: What socket does the AMD Ryzen AI 5 340 use?

A: It uses the AMD Socket FP8, which is a BGA socket typically found in thin-and-light laptops.

Q: What is the TDP of this processor?

A: The TDP is 28W, classifying it as an ultra-low-power mobile chip.

Q: Does the Ryzen AI 5 340 include integrated graphics?

A: Yes, it integrates a Radeon 840M GPU, which is suitable for basic display output and light gaming without a discrete card.

Q: What memory types does it support?

A: It supports DDR5 and LPDDR5X, with a dual-channel memory bus and a memory bandwidth of 89.6 GB/s.

Q: What is the cache configuration?

A: It has 80 KB of L1 cache per core, 1 MB of L2 per core, and 8 MB of shared L3 cache.

Q: When was it released?

A: The release date is January 5, 2025, and it is currently listed as an active production part.

Benchmark Performance

The Ryzen AI 5 340's average benchmark score of 26909 places it in the 84th percentile of all CPUs, a solid standing for a mobile chip. Its nearest rivals, as defined by the data, are the AMD Ryzen 5 7545U (26849, +0.2%), Intel Core i7-1370P (26991, -0.3%), Intel Core i7-12700H (27006, -0.4%), and Intel Core i7-1280P (26812, +0.4%). The deltas are all under half a percent, meaning the 340 is effectively tied with each of these parts in aggregate performance. That is remarkable given that the 340 carries a 28W TDP, while the Intel H-series chips (1370P and 12700H) are typically rated much higher. The efficiency advantage is not directly measured in the scores, but the parity in average score at a lower power budget is a key takeaway.

Looking at specific Cinebench results, the R23 multi-core score of 17178 and single-core of 2425 show a strong scaling ratio. The R20 scores (7214 multi, 1018 single) and R15 scores (1731 multi, 244 single) follow the same pattern. In PassMark, the processor achieves a multithread score of 20196 and a single-thread score of 3873. The individual PassMark workloads also reveal strengths: integer math scores 65612, floating point math 41392, and extended instructions 16887. Data compression hits 236893, while encryption reaches 11901. The physics score is 1137, and find prime numbers scores 72. These numbers indicate a well-rounded part that handles both integer and floating-point workloads competently.

The 84th percentile ranking means that the Ryzen AI 5 340 outperforms the majority of all CPUs in the database, yet it does so within a power envelope that enables fanless or low-noise designs. The near-tie with the Core i7-1370P and i7-12700H is particularly telling: those are larger, higher-power parts, and the 340 matches them in average score. For laptop buyers, the data suggests that this chip delivers performance comparable to a mid-range H-series Intel part while consuming a fraction of the power. That is a compelling combination for anyone prioritizing battery life and portability without sacrificing everyday speed. The only caveat is that the 340 is not a top-tier performer — the 84th percentile is good, but not elite — so demanding users who need extreme multi-core throughput for rendering or heavy simulation should look at higher-core-count parts. For the vast majority of mobile workloads, though, the Ryzen AI 5 340 is a strong, efficient choice.