AMD Ryzen AI 5 340 vs AMD Ryzen AI 9 365 Comparison

AMD Ryzen AI 5 340 and AMD Ryzen AI 9 365 are both mobile processors built on the same Zen 5 architecture and 4 nm TSMC process, but they target different performance tiers within the Ryzen AI 300 generation. The database records show a clear performance hierarchy, with the Ryzen AI 9 365 winning every single benchmark comparison, yet the margin of victory varies significantly by workload type. This analysis breaks down the recorded data to show where the performance gaps are largest and smallest, and what that means for real-world usage patterns.

Head-to-Head Benchmarks

The benchmark results are one-sided, with the AMD Ryzen AI 9 365 taking all 17 recorded head-to-head wins. The most decisive victories come in multi-threaded and parallel workloads. In Cinebench R15 multicore, the Ryzen AI 9 365 scores 2842 against 1915 for the Ryzen AI 5 340, a delta of -32.6%. Cinebench R23 multicore shows a similar gap at -33%, with scores of 18698 and 12532 respectively. Geekbench multicore delivers the largest relative difference at -33.4%, with the Ryzen AI 9 365 posting 13760 versus 9165.

PassMark results reinforce this pattern across various computational tasks. Integer math shows a -38.1% delta (101831 vs 63078), while floating point math is -36.4% (62802 vs 39967). Prime number finding is the biggest outlier at -38.5% (117 vs 72). Data encryption is close behind at -37.3% (18297 vs 11470), and random string sorting is -36.7% (39447 vs 24970). Extended instructions, data compression, and physics tests all fall in the -34.5% to -35.7% range, showing consistent heavy lifting advantage for the larger chip.

Single-threaded performance tells a different story. The gaps shrink dramatically, though the Ryzen AI 9 365 still wins everywhere. Cinebench R23 singlecore shows only a -3.8% delta (1992 vs 1915.5), and Geekbench singlecore is -5% (2253 vs 2140). PassMark single thread is -4.1% (3841 vs 3683). Cinebench R15 singlecore is the closest overall at -19.9% (303 vs 242.6), which is a notable outlier compared to the other single-thread tests, but still a clear win for the Ryzen AI 9 365.

The average benchmark score difference is substantial: the Ryzen AI 9 365 averages 40048, while the Ryzen AI 5 340 averages 25981. That places the Ryzen AI 9 365 at the 87th percentile of all CPUs in the database, against the 78th percentile for the Ryzen AI 5 340.

Architecture Differences

Both processors use the Zen 5 architecture and share the same Ryzen AI 300 generation designation, which combines Zen 5 and Zen 5c cores. The manufacturing process is identical: 4 nm at TSMC. The fundamental difference lies in the chip design and core count. The Ryzen AI 5 340 is built on the Krackan Point codename, while the Ryzen AI 9 365 uses Strix Point. Die size differs notably: the Ryzen AI 5 340 measures 195 mm², and the Ryzen AI 9 365 is larger at 233 mm², reflecting the additional silicon for extra cores and cache.

Core and thread counts are the primary architectural split. The Ryzen AI 5 340 provides 6 cores and 12 threads, while the Ryzen AI 9 365 doubles the thread count with 10 cores and 20 threads. Cache allocation follows the same trend. Both have 80 KB of L1 per core and 1 MB of L2 per core, but the shared L3 cache is 8 MB on the Ryzen AI 5 340 versus 16 MB on the Ryzen AI 9 365. That double L3 capacity directly benefits workloads with large working sets.

Clock speeds differ only at the top end. Both chips have a 2.00 GHz base clock, but the boost clock is 4.80 GHz on the Ryzen AI 5 340 and 5.00 GHz on the Ryzen AI 9 365. The higher boost contributes to the single-thread advantages seen in the benchmarks, though the effect is modest. The integrated graphics also differ: the Ryzen AI 5 340 carries a Radeon 840M, while the Ryzen AI 9 365 uses a Radeon 880M, which is a higher-tier iGPU solution.

Both chips share the same socket (AMD Socket FP8), memory support (DDR5 and LPDDR5X), dual-channel memory bus, and 89.6 GB/s memory bandwidth. Neither supports ECC memory, and both are locked (multiplier unlocked is false). PCIe connectivity is identical at Gen 4 with 16 lanes from the CPU. The release dates differ by about six months, with the Ryzen AI 9 365 launching in mid-2024 and the Ryzen AI 5 340 in early 2025.

Where Each One Wins

The data shows no benchmark wins for the Ryzen AI 5 340, so the practical question is which workloads see the smallest penalty. Single-threaded tasks are where the Ryzen AI 5 340 is closest. Cinebench R23 singlecore, Geekbench singlecore, and PassMark single thread all show deltas under 5.1%. For everyday responsiveness, web browsing, office documents, and light productivity, the experience should be nearly indistinguishable, as the per-core performance is very close.

The Ryzen AI 9 365 dominates in any workload that scales with core count or cache size. Rendering, video encoding, code compilation, scientific computing, and heavy multitasking all benefit from the 10 cores, 20 threads, and 16 MB L3 cache. The PassMark integer and floating point math results show a 36-38% advantage, which translates directly to number-crunching tasks. Data compression and encryption also show 35-37% gains, making the Ryzen AI 9 365 the clear choice for file archiving, database work, and security-related processing.

The Ryzen AI 5 340 is not a poor performer in absolute terms. Its average benchmark score of 25981 places it near the AMD Ryzen 5 8640HS and Intel Core i7-11700K in the database, with deltas of -0.5% and +0.7% respectively. But when paired against the Ryzen AI 9 365, the core deficit is too large to overcome in parallel workloads. The Ryzen AI 5 340 makes sense for users who prioritize portability and battery life, as the lower core count typically draws less power in sustained workloads, though the TDP is rated identically at 28 W for both.

Specification Differences

The two processors differ in several key specification fields. Core count: 6 vs 10. Thread count: 12 vs 20. Boost clock: 4.80 GHz vs 5.00 GHz. L3 cache: 8 MB vs 16 MB. Die size: 195 mm² vs 233 mm². Integrated graphics: Radeon 840M vs Radeon 880M. Codename: Krackan Point vs Strix Point. Release date: 2025-01-05 vs 2024-06-30. Part number: 100-000001602 vs 100-000001530.

Many specifications are identical and do not require differentiation. Base clock is 2.00 GHz on both. TDP is 28 W for both. Socket is AMD Socket FP8 for both. Architecture is Zen 5 for both. Process node is 4 nm at TSMC for both. L1 cache is 80 KB per core and L2 is 1 MB per core on both. Memory support, bus width, bandwidth, ECC status, PCIe generation and lane count, market segment, production status, and multiplier unlock status are all the same.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Ryzen AI 9 365 has 10 cores and 20 threads, while the AMD Ryzen AI 5 340 has 6 cores and 12 threads.

Q: How much faster is the Ryzen AI 9 365 in multi-core rendering?

A: In Cinebench R23 multicore, the Ryzen AI 9 365 scores 18698 against 12532 for the Ryzen AI 5 340, a 33% advantage. Geekbench multicore shows a 33.4% gap (13760 vs 9165).

Q: Is the single-thread performance much different?

A: No, the gap is small. Cinebench R23 singlecore shows a 3.8% delta (1992 vs 1915.5), and Geekbench singlecore is 5% (2253 vs 2140). PassMark single thread is 4.1% (3841 vs 3683).

Q: What is the L3 cache difference?

A: The Ryzen AI 5 340 has 8 MB of L3 cache, while the Ryzen AI 9 365 has 16 MB, doubling the shared cache.

Q: Do they use the same socket and memory?

A: Yes, both use AMD Socket FP8, support DDR5 and LPDDR5X, dual-channel memory, and have 89.6 GB/s memory bandwidth.

Q: Which processor has the higher boost clock?

A: The Ryzen AI 9 365 boosts to 5.00 GHz, while the Ryzen AI 5 340 boosts to 4.80 GHz. Both have a 2.00 GHz base clock.

The Verdict

The benchmark data is unambiguous: the AMD Ryzen AI 9 365 outperforms the AMD Ryzen AI 5 340 in every recorded test. The average benchmark score of 40048 versus 25981 represents a 54% overall advantage, and the percentile ranking (87th vs 78th) confirms the class difference. For any workload that uses multiple cores, the Ryzen AI 9 365 delivers 33-38% higher performance, which is a massive margin for mobile processors in the same TDP envelope.

The Ryzen AI 5 340 is not a weak chip in absolute terms, as its nearest rivals include the Intel Core i7-14701TE and AMD Ryzen 5 8640HS with deltas under 1%. But when the choice is between these two specific AMD parts, the Ryzen AI 9 365 is the superior processor by every measurable metric. The only arguments for the Ryzen AI 5 340 are indirect: it is a newer release (early 2025 vs mid-2024), has a smaller die (195 mm² vs 233 mm²), and may appear in more compact systems, though the database records the same 28 W TDP for both.

Users who need maximum throughput for rendering, compilation, virtualization, or other parallel tasks should select the Ryzen AI 9 365. Users who prioritize the smallest possible margin in single-threaded performance, or who are constrained by system size and prefer the Krackan Point die, can consider the Ryzen AI 5 340 with the understanding that multi-threaded performance will be roughly one-third lower. The data does not support any scenario where the Ryzen AI 5 340 is the faster choice, so the verdict follows the numbers without qualification.