AMD Ryzen AI Embedded P164 vs AMD Ryzen Embedded 8640U Comparison

Head-to-Head Benchmarks

The recorded database contains a complete benchmark profile for the AMD Ryzen AI Embedded P164 but no benchmark scores for the AMD Ryzen Embedded 8640U. The P164 delivers a PassMark multi-thread score of 25,889, a single-thread score of 4,029, and an average benchmark score of 52,901 across all recorded tests. The 8640U has an average benchmark score of 0 and an empty benchmark array, meaning direct head-to-head comparisons cannot be drawn from measured results. Instead, the analysis must rely on the P164’s standing against its nearest rivals and the architectural specifications of both parts.

The P164 posts an average benchmark score of 52,901, placing it at the 91st percentile among all CPUs in the database. Its nearest measured rival is the AMD Ryzen 5 9500F with an average score of 52,873, a delta of just 0.1% in favor of the P164. The Intel Xeon 634 scores 52,974, putting it 0.1% ahead of the P164. The AMD EPYC 7313P scores 53,206, which is 0.6% ahead, and the AMD Ryzen 9 7900X scores 53,288, 0.7% ahead. These margins are narrow, indicating the P164 sits in a tightly contested performance band.

Within its own benchmark suite, the P164 shows clear strengths in specific workloads. The data compression test returns 327,891, the highest single-test figure in its profile. Integer math scores 87,940, floating point math scores 55,799, and extended instructions score 24,193. Random string sorting reaches 34,801, data encryption scores 16,055, and find prime numbers returns 71. Physics scores 1,210. The spread across these tests shows a processor optimized for throughput-oriented tasks rather than latency-sensitive single-thread work.

The 8640U’s lack of recorded benchmarks means the database cannot confirm any performance advantage for either chip in direct comparison. What can be stated is that the P164’s 91st percentile ranking reflects strong overall performance, while the 8640U’s 50th percentile and zero average score reflect missing data rather than measured weakness. The nearest rival deltas for the P164, all within 0.7%, suggest that its performance class is competitive with high-end desktop and server parts, despite its mobile embedded positioning.

Where Each One Wins

The P164 wins in every category where measured data exists, simply because it is the only one of the two with recorded benchmark results. Its multi-thread score of 25,889 indicates strong parallel workload capability, while the single-thread score of 4,029 shows respectable per-core performance. The data compression result of 327,891 dominates its own profile, suggesting that workloads involving compression, archiving, or similar data manipulation tasks benefit most from this processor.

The 8640U cannot be assigned wins in any benchmark category due to the absence of scores. However, specification-level differences point to areas where it may hold advantages in real-world deployments. It uses Zen 4 architecture, has a higher base clock of 3.50 GHz compared to the P164’s 2.00 GHz, and features a larger shared L3 cache of 16 MB versus the P164’s 8 MB. These traits suggest potentially better performance in single-threaded or cache-sensitive workloads, although no measured data confirms this.

The P164’s 8 cores and 16 threads give it a core-count advantage over the 8640U’s 6 cores and 12 threads. For heavily threaded applications, the P164’s additional two cores and four threads are likely to matter. The P164 also has a higher boost clock at 5.00 GHz versus 4.90 GHz, and its Radeon 880M integrated graphics outclass the 8640U’s Radeon 760M in the database’s specification records.

Use-case splits from the available data favor the P164 for multi-threaded, compression-heavy, and math-intensive workloads. The 8640U’s higher base clock and larger L3 cache suggest it could be more responsive in lightly threaded or latency-sensitive tasks, but the database contains no benchmark evidence to quantify that. The production status of both CPUs is listed as Active, so neither is a legacy or end-of-life part.

Architecture Differences

The two processors come from different generations and microarchitectures. The P164 is codenamed Gorgon Point and belongs to the Ryzen AI Embedded generation built on Zen 5 and Zen 5c cores. The 8640U is codenamed Hawk Point, part of the Ryzen Embedded 8000 series, and uses Zen 4 architecture. Both are fabricated on a 4 nm process at TSMC, so the node is identical. The die sizes differ, with the P164 measuring 233 mm² and the 8640U measuring 178 mm². The 8640U’s transistor count is recorded as 25,000 million, while the P164’s transistor count is not listed in the database.

Cache layouts differ significantly. The P164 provides 80 KB of L1 per core, 1 MB of L2 per core, and 8 MB of L3. The 8640U provides 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. The P164’s smaller L3 pool is paired with more cores, while the 8640U’s larger L3 serves fewer cores. Neither part supports 3D V-Cache, according to the database.

Memory support shows a split. The P164 supports both DDR5 and LPDDR5X, while the 8640U supports only DDR5. Both use dual-channel memory buses and both are rated at 89.6 GB/s memory bandwidth. Both support ECC memory. PCIe connectivity differs: the P164 offers Gen 4 with 16 lanes from the CPU, while the 8640U offers Gen 4 with 20 lanes from the CPU. Integrated graphics differ as well, with the P164 using a Radeon 880M and the 8640U using a Radeon 760M.

The P164’s release date is recorded as March 8, 2026, while the 8640U’s release date is April 1, 2024. Both use AMD Socket FP8, both are mobile market segment parts, and neither has an unlocked multiplier. The P164’s dual architecture designation of Zen 5 and Zen 5c suggests a hybrid core arrangement, while the 8640U uses a uniform Zen 4 design. This hybrid approach may explain the P164’s larger die and higher core count.

Specification Differences

The most direct specification comparison shows the P164 with 8 cores and 16 threads versus the 8640U with 6 cores and 12 threads. Base clocks differ substantially: the P164 runs at 2.00 GHz, while the 8640U runs at 3.50 GHz. Boost clocks are closer, with the P164 at 5.00 GHz and the 8640U at 4.90 GHz. Both parts have a 28 W TDP.

Cache totals differ in L1 and L3. The P164 has 80 KB of L1 per core, while the 8640U has 64 KB. L2 is identical at 1 MB per core. L3 is 8 MB on the P164 and 16 MB shared on the 8640U. The memory support lists DDR5 and LPDDR5X for the P164 and DDR5 alone for the 8640U. PCIe lane counts differ, with the 8640U offering 20 lanes versus the P164’s 16 lanes, both on Gen 4.

The integrated GPU is a differentiator, with the P164 carrying a Radeon 880M and the 8640U carrying a Radeon 760M. Both support ECC memory, both use dual-channel memory, and both have a memory bandwidth rating of 89.6 GB/s. The die size difference is notable, with the P164 at 233 mm² and the 8640U at 178 mm². The 8640U has a recorded transistor count of 25,000 million, while the P164’s transistor count is absent from the database.

The P164’s generation is listed as Ryzen AI Embedded with Zen 5 and Zen 5c, while the 8640U’s generation is Ryzen Embedded with Zen 4. The P164’s codename is Gorgon Point, and the 8640U’s is Hawk Point. Both parts are active production, both are mobile segment, both use Socket FP8, and neither has an unlocked multiplier. The P164 was released in 2026, while the 8640U was released in 2024.

FAQ

Q: Which processor has more cores?

A: The AMD Ryzen AI Embedded P164 has 8 cores and 16 threads, while the AMD Ryzen Embedded 8640U has 6 cores and 12 threads.

Q: What is the boost clock difference between the two?

A: The P164 boosts to 5.00 GHz, while the 8640U boosts to 4.90 GHz. The 8640U has a higher base clock at 3.50 GHz compared to the P164’s 2.00 GHz.

Q: Which CPU has more L3 cache?

A: The AMD Ryzen Embedded 8640U has 16 MB of shared L3 cache, while the AMD Ryzen AI Embedded P164 has 8 MB of L3 cache.

Q: Do both processors support ECC memory?

A: Yes, both the P164 and the 8640U support ECC memory. Both also use dual-channel memory buses and are rated at 89.6 GB/s memory bandwidth.

Q: What are the integrated graphics in each processor?

A: The P164 uses a Radeon 880M, and the 8640U uses a Radeon 760M.

Q: What PCIe capabilities do the two chips offer?

A: The P164 offers PCIe Gen 4 with 16 lanes from the CPU, while the 8640U offers PCIe Gen 4 with 20 lanes from the CPU.

Q: Are both processors built on the same manufacturing process?

A: Yes, both are fabricated on a 4 nm process at TSMC. The P164 has a die size of 233 mm², and the 8640U has a die size of 178 mm².