AMD Ryzen AI 7 345 vs AMD Ryzen Embedded 8640U Comparison

FAQ

Q: What are the core and thread counts for both processors?

A: Both the AMD Ryzen AI 7 345 and the AMD Ryzen Embedded 8640U feature 6 cores and 12 threads.

Q: Which processor has the higher boost clock?

A: The AMD Ryzen Embedded 8640U has a higher boost clock of 4.90 GHz, while the AMD Ryzen AI 7 345 boosts up to 4.60 GHz.

Q: Do both processors use the same socket?

A: Yes, both the AMD Ryzen AI 7 345 and the AMD Ryzen Embedded 8640U use the AMD Socket FP8.

Q: What is the difference in L3 cache capacity between the two?

A: The AMD Ryzen AI 7 345 has 4 MB of L3 cache, while the AMD Ryzen Embedded 8640U has 16 MB of shared L3 cache.

Q: Which processor supports ECC memory?

A: The AMD Ryzen Embedded 8640U supports ECC memory, while the AMD Ryzen AI 7 345 does not.

Q: Are there any benchmark scores recorded for the AMD Ryzen Embedded 8640U?

A: The database contains no benchmark scores for the AMD Ryzen Embedded 8640U; its average benchmark score is recorded as 0, and it has no nearest rivals listed.

The Verdict

The data presents a clear asymmetry: the AMD Ryzen AI 7 345 has extensive benchmark results, while the AMD Ryzen Embedded 8640U has none recorded. Therefore, the analysis must focus on what the recorded measurements show for the Ryzen AI 7 345 and what the specification differences imply for the Embedded 8640U.

For users prioritizing immediate, measured performance in mobile workloads, the AMD Ryzen AI 7 345 is the only option with verified scores. Its average benchmark score of 29461 places it at the 81st percentile among all CPUs in the database. This indicates strong multi-threaded and single-threaded performance for a 28 W mobile part.

For users in embedded or industrial applications requiring ECC memory support and a larger L3 cache, the AMD Ryzen Embedded 8640U has a structural advantage on paper. Its 16 MB shared L3 cache is four times larger than the 4 MB on the Ryzen AI 7 345, which can benefit certain workloads with high cache reuse. However, without any benchmark data, its actual performance remains unverified.

The verdict is straightforward: choose the AMD Ryzen AI 7 345 if measured performance is the deciding factor. Choose the AMD Ryzen Embedded 8640U only if ECC memory support or the larger L3 cache is an absolute requirement, accepting that no performance data exists to validate its capabilities.

Head-to-Head Benchmarks

Direct head-to-head benchmark comparisons are impossible because the database contains no recorded scores for the AMD Ryzen Embedded 8640U. All wins in this section belong exclusively to the AMD Ryzen AI 7 345, based on its measured results.

In Cinebench R23 multi-core, the AMD Ryzen AI 7 345 scores 11461, which is a strong result for a 6-core, 12-thread mobile processor at 28 W. Its single-core score of 1818 in the same test indicates solid per-thread performance. The Cinebench R15 results show 1712 in multi-core and 271 in single-core, confirming consistent scaling across render workloads.

PassMark results for the AMD Ryzen AI 7 345 show its highest scores in data compression at 237484, integer math at 63475, and floating point math at 42621. The single-thread score of 3875 and multithread score of 19927 indicate balanced performance across both lightly threaded and heavily threaded tasks. Extended instructions score 17003, while data encryption scores 11814.

The nearest rivals in the database for the AMD Ryzen AI 7 345 provide context. Its average score of 29461 is effectively tied with the AMD Ryzen 7 3800X at 29447 (0% delta), and it sits 0.2% above the AMD EPYC 9654 at 29409. It trails the AMD Ryzen 7 PRO 5755GE at 29656 by 0.7%, and it leads the Intel Core i5-13500HX at 29270 by 0.7%. These deltas are minimal, indicating the Ryzen AI 7 345 delivers performance comparable to desktop and server processors from previous generations, despite its mobile form factor.

Specification Differences

The two processors share several foundational specifications: both have 6 cores, 12 threads, a 28 W TDP, the AMD Socket FP8, dual-channel memory buses, 89.6 GB/s memory bandwidth, and TSMC 4 nm process nodes. Both are active production parts with locked multipliers.

The clock speeds differ significantly. The AMD Ryzen Embedded 8640U has a base clock of 3.50 GHz and a boost clock of 4.90 GHz. The AMD Ryzen AI 7 345 has a base clock of 2.00 GHz and a boost clock of 4.60 GHz. The Embedded part holds a 1.5 GHz advantage at base and a 0.3 GHz advantage at boost.

Memory support differs: the Ryzen AI 7 345 supports DDR5 and LPDDR5X, while the Ryzen Embedded 8640U supports DDR5 only. ECC memory is supported on the Embedded 8640U but not on the AI 7 345.

PCIe lane counts differ: the Ryzen Embedded 8640U provides 20 Gen 4 lanes (CPU only), while the Ryzen AI 7 345 provides 14 Gen 4 lanes (CPU only). This gives the Embedded part more expansion headroom for peripheral connectivity.

Cache configurations differ substantially. The Ryzen AI 7 345 has 80 KB of L1 per core, 1 MB of L2 per core, and 4 MB of L3. The Ryzen Embedded 8640U has 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. The L3 difference is the most notable: 4 MB versus 16 MB, a fourfold gap.

Integrated graphics differ: the Ryzen AI 7 345 uses the Radeon 840M, while the Ryzen Embedded 8640U uses the Radeon 760M. The release dates also differ, with the Embedded 8640U launching on 2024-04-01 and the AI 7 345 launching on 2025-01-14.

Architecture Differences

The architectural split is clear. The AMD Ryzen AI 7 345 uses the Krackan Point codename and belongs to the Ryzen AI 300 generation built on the Zen 5 / Zen 5c architecture. The AMD Ryzen Embedded 8640U uses the Hawk Point codename and belongs to the 8000 series, built on the Zen 4 architecture.

The process nodes are identical at 4 nm from TSMC, but the transistor counts and die sizes differ. The Ryzen Embedded 8640U has 25,000 million transistors on a 178 mm² die. The Ryzen AI 7 345 has no recorded transistor count or die size in the database.

The cache hierarchy reflects the architectural generation difference. Zen 5 / Zen 5c in the Ryzen AI 7 345 uses 80 KB of L1 per core, while Zen 4 in the Ryzen Embedded 8640U uses 64 KB of L1 per core. Both use 1 MB of L2 per core. The L3 cache shows the biggest gap: the Ryzen AI 7 345 has 4 MB total, while the Ryzen Embedded 8640U has 16 MB shared.

The integrated graphics also differ by architecture. The Ryzen AI 7 345 pairs its Zen 5 cores with the Radeon 840M, while the Ryzen Embedded 8640U pairs its Zen 4 cores with the Radeon 760M. The Embedded part's generation is explicitly listed as "Ryzen Embedded (Zen 4 (Hawk Point))", while the AI 7 345's generation is "Ryzen AI 300 (Zen 5 / Zen 5c)".

The base clock difference of 1.5 GHz likely reflects the different architectural designs: the Zen 4 part runs at a higher idle base clock, while the Zen 5 / Zen 5c hybrid design uses a lower base clock with boost capability. The boost clock advantage of 0.3 GHz for the Embedded part suggests it can sustain higher peak frequencies.

Where Each One Wins

The AMD Ryzen AI 7 345 wins decisively in measured performance categories. Its benchmark suite covers rendering, mathematical operations, encryption, compression, and single-threaded tasks. The 81st percentile ranking among all CPUs confirms broad competitiveness. The data shows it handles multi-threaded workloads well, with a Cinebench R23 multi-core score of 11461 and a PassMark multithread score of 19927. Single-threaded performance is equally solid, with a PassMark single-thread score of 3875 and a Cinebench R23 single-core score of 1818. For mobile users running productivity applications, content creation, or general-purpose software, the recorded data shows this processor delivers consistent, measurable results.

The AMD Ryzen Embedded 8640U wins on paper in three specific specification areas. First, ECC memory support makes it suitable for error-sensitive embedded workloads where data integrity is critical. Second, the 16 MB shared L3 cache versus 4 MB on the Ryzen AI 7 345 provides a larger pool for frequently accessed data, potentially benefiting workloads with high cache residency. Third, the 20 PCIe Gen 4 lanes versus 14 on the AI 7 345 offers more connectivity for embedded systems requiring multiple peripherals or expansion cards.

The Embedded 8640U also has a higher base clock of 3.50 GHz versus 2.00 GHz, which may indicate better sustained low-load performance, though no benchmark data confirms this. Its boost clock of 4.90 GHz is marginally higher than 4.60 GHz on the AI 7 345.

The use-case split is therefore clean: the AMD Ryzen AI 7 345 is the choice for any workload where measured performance matters, as evidenced by its extensive benchmark record. The AMD Ryzen Embedded 8640U is the choice only for embedded or industrial scenarios that mandate ECC memory, require more PCIe lanes, or need the larger L3 cache, accepting that its performance remains unverified in the database.