AMD Ryzen AI Embedded P132 vs AMD Ryzen Embedded 8645HS Comparison

FAQ

Q: How do the core counts and thread counts compare between the two processors?

A: Both the AMD Ryzen AI Embedded P132 and the AMD Ryzen Embedded 8645HS have 6 cores and 12 threads. The core and thread counts are identical, so the differences in performance come from clock speeds, architecture, and cache design.

Q: Which processor has the higher boost clock?

A: The AMD Ryzen Embedded 8645HS has a boost clock of 5.00 GHz, while the AMD Ryzen AI Embedded P132 boosts to 4.50 GHz. The base clock also favors the 8645HS: 4.30 GHz versus 2.00 GHz on the P132.

Q: What is the difference in L3 cache capacity?

A: The AMD Ryzen Embedded 8645HS has 16 MB of shared L3 cache, while the AMD Ryzen AI Embedded P132 has only 4 MB of L3 cache. The 8645HS also uses a larger per-core L1 cache (64 KB per core vs. 80 KB per core on the P132, though the P132 has 1 MB L2 per core matching the 8645HS).

Q: Which processor supports ECC memory?

A: Both processors support ECC memory. Both also use dual-channel memory buses with 89.6 GB/s memory bandwidth, though the P132 supports both DDR5 and LPDDR5X, while the 8645HS supports only DDR5.

Q: What are the integrated graphics differences?

A: The AMD Ryzen AI Embedded P132 uses the Radeon 840M, while the AMD Ryzen Embedded 8645HS uses the Radeon 760M. Both are integrated graphics solutions, but the database does not include benchmark scores for either iGPU.

Q: How do the processors compare in terms of PCIe lanes?

A: The AMD Ryzen Embedded 8645HS provides 20 PCIe Gen 4 lanes (CPU only), while the AMD Ryzen AI Embedded P132 provides 14 PCIe Gen 4 lanes (CPU only). This is a notable difference for embedded systems that need additional expansion.

Architecture Differences

The AMD Ryzen AI Embedded P132 is built on the Gorgon Point codename and belongs to the Ryzen AI Embedded generation, which uses a hybrid Zen 5 / Zen 5c core arrangement. The AMD Ryzen Embedded 8645HS is based on the Hawk Point codename with pure Zen 4 cores from the 8000 series. Both processors are manufactured on a 4 nm process at TSMC, but the underlying architectures differ in design goals: the P132 mixes high-performance Zen 5 cores with efficiency-oriented Zen 5c cores, while the 8645HS uses uniform Zen 4 cores across all six.

The cache hierarchy diverges significantly. The P132 has 80 KB of L1 cache per core, 1 MB of L2 per core, and 4 MB of L3 cache. The 8645HS has 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3 cache. The larger L3 on the 8645HS is substantial: four times the capacity of the P132. This matters for workloads that repeatedly access large datasets, as the bigger shared cache reduces memory traffic.

The transistor count and die size are only specified for the 8645HS: 25,000 million transistors and a 178 mm² die. The P132's transistor count and die size are not recorded in the database. The 8645HS also has a higher TDP at 45 W versus 28 W for the P132, which aligns with its higher base and boost clocks. Both use the AMD Socket FP8 and are active production parts, but the P132's release date is recorded as March 2026, while the 8645HS was released in April 2024.

The memory controllers differ in supported types. The P132 supports DDR5 and LPDDR5X, giving it flexibility for low-power or high-bandwidth memory configurations. The 8645HS supports only DDR5. Both run dual-channel with 89.6 GB/s memory bandwidth, and both support ECC memory, which is a common requirement for embedded reliability.

The PCIe implementation also differs. The 8645HS offers 20 Gen 4 lanes from the CPU, while the P132 offers 14 Gen 4 lanes. For embedded systems that need to attach multiple NVMe drives, network cards, or other PCIe devices, the 8645HS has more headroom.

Head-to-Head Benchmarks

The database does not include direct head-to-head benchmark comparisons between the AMD Ryzen AI Embedded P132 and the AMD Ryzen Embedded 8645HS. The P132 has a full set of PassMark scores, while the 8645HS has no recorded benchmark entries. The P132's average benchmark score is 37,804, and it sits at the 86th percentile among all CPUs. The 8645HS has an average benchmark score of 0 and a 50th percentile ranking, which reflects the absence of measured data rather than actual performance.

For the P132, the individual PassMark scores show a mixed profile. The single-thread score is 3,713, and the multithread score is 19,262. Integer math scores 62,249, floating point math scores 42,248, and extended instructions score 16,520. Data compression scores 230,437, data encryption scores 11,444, random string sorting scores 25,181, find prime numbers scores 57, and physics scores 1,022.

These numbers can be interpreted against the P132's nearest rivals in the database. The Intel Core 5 211E has an average score of 37,829, which is 0.1% lower than the P132's 37,804. The AMD Ryzen AI 5 PRO 435 scores 37,762, which is 0.1% higher than the P132. The AMD Ryzen AI 9 HX 370 scores 37,904, which is 0.3% lower than the P132. The Intel Core i9-14901E scores 37,911, which is 0.3% lower than the P132. These deltas are all within a fraction of a percent, meaning the P132 performs essentially on par with these four rivals in average benchmark score.

Because the 8645HS lacks recorded benchmarks, the head-to-head section cannot produce exact score comparisons. The data shows that the P132 is a measured performer at the 86th percentile, while the 8645HS has no measured data in the database. Any performance claims for the 8645HS would require extrapolation from its architectural specifications, which is not supported by the recorded facts.

Specification Differences

The two processors differ in several specification fields. The P132 has a base clock of 2.00 GHz, while the 8645HS has a base clock of 4.30 GHz. The boost clock is 4.50 GHz on the P132 and 5.00 GHz on the 8645HS. The TDP is 28 W for the P132 and 45 W for the 8645HS. Both use the same socket (AMD Socket FP8) and the same process node (4 nm TSMC).

The architecture differs: the P132 uses a Zen 5 / Zen 5c hybrid design under the Gorgon Point codename, while the 8645HS uses Zen 4 under the Hawk Point codename. The P132's generation is listed as "Ryzen AI Embedded (Zen 5 / Zen 5c)", and the 8645HS is listed as "Ryzen Embedded (Zen 4 (Hawk Point))".

Cache layouts differ. The P132 has 80 KB of L1 per core, 1 MB of L2 per core, and 4 MB of L3. The 8645HS has 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. The P132 has no recorded transistor count or die size, while the 8645HS has 25,000 million transistors and a 178 mm² die.

Memory support differs: the P132 accepts DDR5 and LPDDR5X, while the 8645HS accepts DDR5 only. Both use dual-channel buses with 89.6 GB/s bandwidth and both support ECC. PCIe lane counts differ: the P132 has 14 Gen 4 lanes from the CPU, while the 8645HS has 20 Gen 4 lanes. The integrated graphics differ: Radeon 840M on the P132 versus Radeon 760M on the 8645HS.

Release dates differ: the P132 is recorded as March 2026, while the 8645HS is recorded as April 2024. Neither processor has a launch MSRP in the database, and neither has an unlocked multiplier. Both are active production parts and target the mobile market segment.

The Verdict

The recorded data points to a clear split. The AMD Ryzen AI Embedded P132 has extensive benchmark results and sits at the 86th percentile among all CPUs, with an average score of 37,804. Its nearest rivals are all within 0.3% of that score, so the P132 is a known quantity in the database. The AMD Ryzen Embedded 8645HS has no benchmark scores, no average score, and a 50th percentile that reflects missing data rather than measured performance.

For workloads that rely on single-thread performance, the 8645HS has higher base and boost clocks (4.30 GHz and 5.00 GHz versus 2.00 GHz and 4.50 GHz). The 8645HS also has four times the L3 cache (16 MB versus 4 MB) and 20 PCIe Gen 4 lanes versus 14. These specifications suggest the 8645HS is better suited to latency-sensitive or cache-heavy tasks and systems requiring more expansion. The higher 45 W TDP indicates the 8645HS is built for sustained performance rather than power efficiency.

The P132 uses the newer Zen 5 / Zen 5c architecture on the same 4 nm node, supports LPDDR5X memory, and has a lower 28 W TDP. Its benchmark scores show balanced performance across integer math, floating point math, and data compression. The P132 has an 86th percentile ranking, which places it above the median of all CPUs in the database.

The data does not support a single "better" processor. The 8645HS offers higher clocks, more cache, and more PCIe lanes, but no measured benchmarks. The P132 offers measured performance at a level comparable to several recent AMD and Intel parts, plus a lower TDP and LPDDR5X support. The choice depends on whether the user prioritizes verified benchmark performance or raw specification advantages.

Where Each One Wins

The AMD Ryzen AI Embedded P132 wins in areas where measured performance matters. Its PassMark scores cover a range of workloads, and its average score of 37,804 places it at the 86th percentile. The P132's nearest rivals, including the Intel Core 5 211E, AMD Ryzen AI 5 PRO 435, AMD Ryzen AI 9 HX 370, and Intel Core i9-14901E, are all within 0.3% of its average score. This means the P132 delivers performance on par with those established parts. The P132 also supports LPDDR5X memory, which can benefit embedded systems with tight power budgets, and its 28 W TDP is lower than the 8645HS's 45 W. For systems that need to manage thermals or battery life, the P132 has the advantage.

The AMD Ryzen Embedded 8645HS wins on raw specifications. Its base clock of 4.30 GHz is more than double the P132's 2.00 GHz, and its boost clock of 5.00 GHz is 0.50 GHz higher. The 16 MB of shared L3 cache is four times the P132's 4 MB, which can reduce memory latency for repetitive access patterns. The 8645HS also provides 20 PCIe Gen 4 lanes versus 14, so systems with multiple high-speed peripherals have more room. The 8645HS uses the Radeon 760M integrated graphics, while the P132 uses the Radeon 840M, but neither iGPU has benchmark data in the database.

For specific workload types, the P132's recorded scores indicate strengths in data compression (230,437), integer math (62,249), and floating point math (42,248). The 8645HS has no recorded scores, so its wins are purely specification-based. In a direct comparison, the P132 is the only one with verified benchmark results, while the 8645HS offers a higher performance envelope on paper. The 8645HS also has a longer production history, having been released in April 2024, while the P132's release is recorded as March 2026.