AMD Ryzen AI 5 PRO 340 vs AMD Ryzen AI 7 345 Comparison

Head-to-Head Benchmarks

The recorded data shows a clear overall winner: the AMD Ryzen AI 7 345 takes 11 of 15 head-to-head benchmark comparisons, while the AMD Ryzen AI 5 PRO 340 wins only 4. The average benchmark score reinforces this split, with the Ryzen AI 7 345 posting 29461 against the Ryzen AI 5 PRO 340's 27932, a difference of roughly 5.5%.

The Ryzen AI 5 PRO 340's most decisive victory comes in the passmark_find_prime_numbers test, where it scores 74 against 62 for the Ryzen AI 7 345, a 19.4% advantage. This is the largest percentage gap in either direction across all recorded tests. The Ryzen AI 5 PRO 340 also wins both Cinebench R15 tests by 1.8% each: 1743 versus 1712 in multicore and 276 versus 271 in singlecore. Its final win is in Cinebench R23 multicore, where it scores 11534 against 11461, a 0.6% margin.

The Ryzen AI 7 345 counters with several substantial wins in Passmark workloads. Its largest margin is in extended instructions, scoring 17003 against 15721, a 7.5% lead. Data compression shows a 6.7% advantage (237484 versus 221581), floating point math delivers a 6.9% edge (42621 versus 39662), and data encryption comes in 5.1% ahead (11814 versus 11212). The Ryzen AI 7 345 also leads in multithread (19927 versus 19215, 3.6%), single thread (3875 versus 3758, 3%), random string sorting (25435 versus 24334, 4.3%), integer math (63475 versus 63233, 0.4%), and physics (1089 versus 1084, 0.5%). In Cinebench R23 singlecore, the Ryzen AI 7 345 wins narrowly with 1818 versus 1802, a 0.9% margin.

The percentile rankings place the Ryzen AI 7 345 at the 81st percentile of all CPUs, one point above the Ryzen AI 5 PRO 340 at the 80th percentile. The nearest rival data contextualizes both processors: the Ryzen AI 5 PRO 340 sits essentially level with the AMD Ryzen 7 5800X3D (0.1% delta), the AMD Ryzen 7 6800U (0.2% delta), and the Intel Core i9-10900K (0.2% delta), while trailing the Intel Core i9-12900H by 0.3%. The Ryzen AI 7 345 matches the AMD Ryzen 7 3800X (0% delta), sits 0.2% above the AMD EPYC 9654, leads the Intel Core i5-13500HX by 0.7%, and trails the AMD Ryzen 7 PRO 5755GE by 0.7%.

Architecture Differences

Both processors share the Krackan Point codename, the TSMC 4 nm process node, AMD Socket FP8, and a 28 W TDP. They also share identical core counts: 6 cores and 12 threads each. The integrated graphics are the same Radeon 840M on both parts, and both support DDR5 and LPDDR5X memory over a dual-channel bus with 89.6 GB/s bandwidth.

The first architectural divergence appears in the architecture field itself: the Ryzen AI 5 PRO 340 is explicitly listed as Zen 5, while the Ryzen AI 7 345 has no architecture entry in the database. Both belong to different generations according to the recorded data: the Ryzen AI 5 PRO 340 is in the Ryzen AI PRO 300 generation (Zen 5 / Zen 5c), while the Ryzen AI 7 345 is in the Ryzen AI 300 generation (Zen 5 / Zen 5c).

Clock speeds differ. The Ryzen AI 5 PRO 340 boosts to 4.80 GHz, while the Ryzen AI 7 345 boosts to 4.60 GHz. Both share a 2.00 GHz base clock. The L3 cache is a notable differentiator: the Ryzen AI 5 PRO 340 carries 8 MB of L3 cache, double the 4 MB found on the Ryzen AI 7 345. L1 and L2 caches are identical at 80 KB per core and 1 MB per core respectively.

PCIe lane counts also diverge. The Ryzen AI 5 PRO 340 offers Gen 4 with 16 lanes (CPU only), while the Ryzen AI 7 345 offers Gen 4 with 14 lanes (CPU only). ECC memory support is present on the Ryzen AI 5 PRO 340 but absent on the Ryzen AI 7 345.

The die size is recorded only for the Ryzen AI 5 PRO 340 at 195 mm²; no die size is listed for the Ryzen AI 7 345. Release dates differ by nine days: the Ryzen AI 5 PRO 340 launched on 2025-01-05, and the Ryzen AI 7 345 launched on 2025-01-14. Part numbers are distinct (100-000001600 for the Ryzen AI 5 PRO 340, 100-000002122 for the Ryzen AI 7 345), and neither processor has an unlocked multiplier.

Where Each One Wins

The Ryzen AI 5 PRO 340 wins in prime number finding by a wide margin (19.4%), which suggests a specific strength in that particular integer workload. Its Cinebench victories, both R15 multicore and singlecore (1.8% each) and R23 multicore (0.6%), indicate that in some rendering and legacy benchmark scenarios, the lower-boost part can still edge ahead. The higher boost clock of 4.80 GHz on the Ryzen AI 5 PRO 340, combined with double the L3 cache (8 MB versus 4 MB), likely contributes to these wins.

The Ryzen AI 7 345 dominates the broader Passmark suite. Its wins span data compression (6.7%), data encryption (5.1%), extended instructions (7.5%), floating point math (6.9%), integer math (0.4%), multithread (3.6%), physics (0.5%), random string sorting (4.3%), and single thread (3%). This pattern indicates a consistent advantage across general-purpose computing tasks, encryption workloads, and floating-point-heavy applications. The only singlecore test where the Ryzen AI 7 345 loses is Cinebench R15 singlecore; it wins Cinebench R23 singlecore by 0.9%.

The average benchmark score gap, 29461 versus 27932, favors the Ryzen AI 7 345 by approximately 5.5%. The percentile ranking also favors the Ryzen AI 7 345 at 81 versus 80. For workloads that resemble the Passmark suite, the Ryzen AI 7 345 is the stronger choice. For workloads that resemble Cinebench R15 or prime number searches, the Ryzen AI 5 PRO 340 holds an edge.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen AI 7 345 scores 29461 on average, while the AMD Ryzen AI 5 PRO 340 scores 27932, a difference of approximately 5.5% in favor of the Ryzen AI 7 345.

Q: How many benchmark wins does each processor have?

A: The AMD Ryzen AI 7 345 wins 11 of 15 head-to-head comparisons, while the AMD Ryzen AI 5 PRO 340 wins 4.

Q: What is the largest single benchmark margin between the two?

A: The passmark_find_prime_numbers test shows the largest margin, with the AMD Ryzen AI 5 PRO 340 scoring 74 against 62 for the AMD Ryzen AI 7 345, a 19.4% advantage.

Q: Do both processors have the same core and thread counts?

A: Yes, both have 6 cores and 12 threads, with a 2.00 GHz base clock and a 28 W TDP.

Q: How do the boost clocks compare?

A: The AMD Ryzen AI 5 PRO 340 boosts to 4.80 GHz, while the AMD Ryzen AI 7 345 boosts to 4.60 GHz.

Q: Which processor has more L3 cache?

A: The AMD Ryzen AI 5 PRO 340 has 8 MB of L3 cache, double the 4 MB found on the AMD Ryzen AI 7 345.

Specification Differences

| Specification | AMD Ryzen AI 5 PRO 340 | AMD Ryzen AI 7 345 |

|-------------------|------------------------|--------------------|

| Architecture | Zen 5 | Not listed |

| Generation | Ryzen AI PRO 300 (Zen 5 / Zen 5c) | Ryzen AI 300 (Zen 5 / Zen 5c) |

| Boost Clock | 4.80 GHz | 4.60 GHz |

| L3 Cache | 8 MB | 4 MB |

| ECC Memory | Yes | No |

| PCIe | Gen 4, 16 Lanes (CPU only) | Gen 4, 14 Lanes (CPU only) |

| Die Size | 195 mm² | Not listed |

| Release Date | 2025-01-05 | 2025-01-14 |

| Part Number | 100-000001600 | 100-000002122 |

Shared specifications include 6 cores, 12 threads, 2.00 GHz base clock, 28 W TDP, AMD Socket FP8, Krackan Point codename, TSMC 4 nm process node, 80 KB L1 cache per core, 1 MB L2 cache per core, DDR5/LPDDR5X memory support, dual-channel memory bus, 89.6 GB/s memory bandwidth, Radeon 840M integrated graphics, mobile market segment, active production status, and a locked multiplier.

The Verdict

The data points to the AMD Ryzen AI 7 345 as the stronger overall processor. Its 11-to-4 win count, higher average benchmark score (29461 versus 27932), and higher percentile ranking (81 versus 80) all favor this part. The Ryzen AI 7 345 wins the majority of Passmark workloads, including multithread, single thread, data compression, encryption, floating point math, and extended instructions, which covers a broad range of real-world computing tasks.

The AMD Ryzen AI 5 PRO 340 is not without merit. It wins the prime number finding test by a substantial 19.4% margin, which indicates a specific performance advantage in that workload. It also wins both Cinebench R15 tests and the Cinebench R23 multicore test, showing that in certain rendering scenarios it can outperform the Ryzen AI 7 345 despite the lower average score. Its higher boost clock (4.80 GHz versus 4.60 GHz) and double L3 cache (8 MB versus 4 MB) provide tangible architectural advantages.

The ECC memory support on the Ryzen AI 5 PRO 340 is a distinguishing feature, as is the additional PCIe lane (16 versus 14). The Ryzen AI 7 345 lacks ECC support entirely. For users who prioritize ECC memory, the Ryzen AI 5 PRO 340 is the only option between the two.

The benchmark data indicates that the Ryzen AI 7 345 should be the default choice for general-purpose mobile computing, given its consistent wins across the Passmark suite and higher average score. The Ryzen AI 5 PRO 340 should be selected when ECC memory support is required, when the specific Cinebench R15 or prime number workloads matter more, or when the higher boost clock and larger L3 cache are considered valuable. The 9-day earlier release date of the Ryzen AI 5 PRO 340 and its larger die size (195 mm² versus not listed) are additional recorded differences, but the performance data favors the Ryzen AI 7 345 for most scenarios.