AMD Ryzen 5 40 vs AMD Ryzen AI 7 345 Comparison

The AMD Ryzen 5 40 and AMD Ryzen AI 7 345 are both mobile processors from the same manufacturer, but the benchmark data shows they occupy very different performance tiers. The Ryzen AI 7 345 wins every single recorded benchmark in the database, with the Ryzen 5 40 trailing by margins that range from roughly one-third to more than two-thirds. The following analysis breaks down the recorded measurements, architectural differences, and what the numbers indicate for potential use cases.

Head-to-Head Benchmarks

The most decisive victory for the AMD Ryzen AI 7 345 comes in the PassMark extended instructions test, where it scores 17003 against 6437 for the Ryzen 5 40, a delta of -62.1%. This indicates a substantial advantage in workloads that leverage advanced CPU instruction sets. Similarly, the PassMark find prime numbers test shows the Ryzen AI 7 345 scoring 62 versus 20, a -67.7% delta, marking the largest relative gap in the entire comparison. The floating point math test also heavily favors the newer chip, with 42621 points against 15194, a -64.4% difference. The physics test follows a similar pattern, with the Ryzen AI 7 345 scoring 1089 and the Ryzen 5 40 scoring 432, a -60.3% delta.

The Cinebench results reinforce this dominance. In Cinebench R23 multi-core, the Ryzen AI 7 345 scores 11461 while the Ryzen 5 40 manages 4841, a -57.8% gap. The single-core R23 test shows a smaller but still large advantage, 1818 versus 1150, a -36.7% delta. In Cinebench R15, the multi-core test shows 1712 against 790, a -53.9% difference, and the single-core test shows 271 versus 165.5, a -38.9% delta.

The PassMark multithread test gives 19927 to the Ryzen AI 7 345 and 9341 to the Ryzen 5 40, a -53.1% delta. Integer math shows 63475 against 31598, a -50.2% difference. Data encryption scores 11814 versus 6646, a -43.7% gap. Data compression shows 237484 versus 141533, a -40.4% delta, and random string sorting shows 25435 versus 15124, also a -40.5% difference. The single-thread PassMark tests, listed twice as passmark_single_thread and passmark_singlethread, both show 3875 versus 2477, a -36.1% delta, making this the smallest relative gap in the dataset.

The average benchmark scores tell a similar story. The Ryzen AI 7 345 has an average benchmark score of 29461, while the Ryzen 5 40 sits at 15882. The Ryzen AI 7 345 also reaches the 81st percentile among all CPUs in the database, while the Ryzen 5 40 lands at the 70th percentile. The nearest rivals for the Ryzen AI 7 345 include the AMD Ryzen 7 3800X with an average score of 29447, a delta of 0%, and the Intel Core i5-13500HX at 29270, a delta of 0.7%. The Ryzen 5 40 sits near the AMD EPYC 75F3 at 15859, a delta of 0.1%, and the Intel Core Ultra 5 134U at 15910, a delta of -0.2%. These numbers place the Ryzen 5 40 in a class of desktop server and low-power mobile chips, while the Ryzen AI 7 345 trades blows with desktop processors from a few generations ago.

Architecture Differences

The two processors are built on different manufacturing nodes and use different core architectures. The AMD Ryzen 5 40 uses the Zen 2 architecture, codenamed Mendocino, and is fabricated on a 6 nm process at TSMC. The AMD Ryzen AI 7 345 uses the newer Zen 5 / Zen 5c architecture, codenamed Krackan Point, built on a 4 nm process, also at TSMC. This node shrink and architectural leap help explain the substantial performance gap.

Core and thread counts differ significantly. The Ryzen 5 40 has 4 cores and 8 threads, while the Ryzen AI 7 345 has 6 cores and 12 threads. Clock speeds also favor the newer chip. The Ryzen 5 40 has a base clock of 2.80 GHz and a boost clock of 4.30 GHz. The Ryzen AI 7 345 has a lower base clock of 2.00 GHz but a higher boost clock of 4.60 GHz. The power envelope differs as well, with the Ryzen 5 40 rated at a 15 W TDP and the Ryzen AI 7 345 rated at 28 W.

Cache configurations show the Ryzen AI 7 345 with more capacity per core. The Ryzen 5 40 has 64 KB of L1 cache per core, 512 KB of L2 cache per core, and 4 MB of shared L3 cache. The Ryzen AI 7 345 has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 4 MB of L3 cache. The die size for the Ryzen 5 40 is 100 mm², while no die size is recorded for the Ryzen AI 7 345.

Memory support and connectivity also differ. The Ryzen 5 40 supports LPDDR5 memory over a dual-channel bus with 88.0 GB/s of bandwidth. The Ryzen AI 7 345 supports both DDR5 and LPDDR5X over a dual-channel bus with 89.6 GB/s of bandwidth. The Ryzen 5 40 uses PCIe Gen 3 with 4 CPU lanes, while the Ryzen AI 7 345 uses PCIe Gen 4 with 14 CPU lanes. Neither processor supports ECC memory.

The integrated graphics solutions differ as well. The Ryzen 5 40 uses the Radeon 610M, while the Ryzen AI 7 345 uses the Radeon 840M. The sockets are different: the Ryzen 5 40 uses AMD Socket FT6, and the Ryzen AI 7 345 uses AMD Socket FP8. The release dates in the database show the Ryzen 5 40 with a release date of 2025-09-30, and the Ryzen AI 7 345 with a release date of 2025-01-14, meaning the Ryzen AI 7 345 predates its rival in the market. Both are listed as Active production status, and neither has an unlocked multiplier.

The Verdict

The data is unambiguous. The AMD Ryzen AI 7 345 wins all 15 recorded head-to-head benchmarks, with no wins recorded for the AMD Ryzen 5 40. The smallest advantage for the Ryzen AI 7 345 is 36.1% in single-thread PassMark and Cinebench R23 single-core, and the largest is 67.7% in the PassMark prime number test. The average benchmark score for the Ryzen AI 7 345 is 29461, which is approximately 85% higher than the 15882 average of the Ryzen 5 40. The percentile ranking also favors the Ryzen AI 7 345, sitting at 81 versus 70 for the Ryzen 5 40.

The Ryzen AI 7 345 delivers higher scores across every category, including multi-core rendering, single-core performance, encryption, compression, and math workloads. The architectural advantages, including the Zen 5 / Zen 5c design, 4 nm process, higher core count, and larger per-core caches, align with the observed benchmark results. The Ryzen 5 40 does not win a single recorded test, so there is no benchmark category in the database where it can be recommended over the Ryzen AI 7 345 based on performance data alone.

FAQ

Q: Which processor has the higher multi-core performance?

A: The AMD Ryzen AI 7 345. In Cinebench R23 multi-core it scores 11461 versus 4841 for the Ryzen 5 40, a -57.8% delta. In Cinebench R15 multi-core it scores 1712 versus 790, a -53.9% delta.

Q: How large is the single-core performance gap?

A: The Ryzen AI 7 345 leads in single-core tests by margins between 36.1% and 38.9%. Cinebench R23 single-core shows 1818 versus 1150, a -36.7% delta, and PassMark single-thread shows 3875 versus 2477, a -36.1% delta.

Q: What are the core and thread counts for each processor?

A: The Ryzen 5 40 has 4 cores and 8 threads. The Ryzen AI 7 345 has 6 cores and 12 threads.

Q: How do the TDP ratings compare?

A: The Ryzen 5 40 has a TDP of 15 W, while the Ryzen AI 7 345 has a TDP of 28 W.

Q: Which processor has the higher boost clock?

A: The AMD Ryzen AI 7 345 has a boost clock of 4.60 GHz, compared to 4.30 GHz for the Ryzen 5 40. The Ryzen 5 40 has the higher base clock at 2.80 GHz versus 2.00 GHz.

Q: Are there any benchmarks where the Ryzen 5 40 wins?

A: No. The database records 15 head-to-head benchmarks, and the AMD Ryzen AI 7 345 wins all of them. The Ryzen 5 40 records zero wins.

Where Each One Wins

The AMD Ryzen AI 7 345 wins in every measured category, but the size of its advantage varies by workload. The largest wins come in integer-heavy and extension-heavy tasks. The PassMark find prime numbers test shows a 67.7% advantage, extended instructions show a 62.1% advantage, and floating point math shows a 64.4% advantage. These results indicate the Ryzen AI 7 345 is particularly strong in scientific computing, data analysis, and workloads that depend on modern instruction sets.

The Ryzen AI 7 345 also dominates in rendering and multi-threaded productivity. Cinebench R23 multi-core shows a 57.8% lead, and the PassMark multithread test shows a 53.1% lead. Data compression and encryption workloads show advantages of 40.4% and 43.7% respectively, making the Ryzen AI 7 345 the clear choice for archiving, database work, and secure data handling.

The smallest gaps between the two processors appear in single-threaded performance. PassMark single-thread shows a 36.1% delta, Cinebench R23 single-core shows a 36.7% delta, and Cinebench R15 single-core shows a 38.9% delta. While the Ryzen AI 7 345 still wins these tests, the relative difference is narrower, suggesting that lightly threaded applications see a smaller but still significant benefit from the newer architecture.

For the Ryzen 5 40, the database shows no category where it outperforms the Ryzen AI 7 345. Its strengths are relative to its own class. Its average benchmark score of 15882 places it near the AMD EPYC 75F3 and Intel Core Ultra 5 134U, and it sits at the 70th percentile of all CPUs. The 15 W TDP, 6 nm process, and Zen 2 architecture make it a lower-power part, but the recorded data does not show any performance advantage over the Ryzen AI 7 345. The Ryzen AI 7 345, with its 28 W TDP, 4 nm node, and higher scores across all 15 tests, is the superior processor in every recorded measurement.