AMD Ryzen AI Embedded P132i vs AMD Ryzen Embedded 8645HS Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark scores for the AMD Ryzen AI Embedded P132i and the AMD Ryzen Embedded 8645HS. Neither processor has an average benchmark score in the database, and both are listed with an identical percentile rank of 50 against all CPUs. This means the available comparison must be drawn entirely from architectural and specification data, rather than measured performance results.

The absence of benchmark data is itself informative. Both parts sit in the same market segment, mobile embedded computing, and both target similar thermal envelopes and form factors. However, the Ryzen Embedded 8645HS carries a significantly higher base clock of 4.30 GHz compared to the P132i's 2.00 GHz, a difference of 2.30 GHz at the floor. The boost clocks are closer, with the 8645HS at 5.00 GHz and the P132i at 4.50 GHz, a 0.50 GHz advantage for the 8645HS. On paper, the 8645HS should deliver substantially higher single-thread and lightly threaded performance in workloads that scale with clock frequency.

The P132i counters with a newer core generation. It uses Zen 5 and Zen 5c cores under the Gorgon Point codename, while the 8645HS uses Zen 4 cores under Hawk Point. The P132i also has a larger L1 cache per core at 80 KB versus 64 KB, which can reduce memory latency in tight loops. The 8645HS holds a decisive advantage in L3 cache, however, with 16 MB shared versus 4 MB on the P132i. That 12 MB difference in last-level cache can substantially affect workloads with large working sets, such as database queries, virtualization, and certain scientific computations.

Both processors are built on the same 4 nm process at TSMC, so the architecture generation difference is not compounded by a process node advantage. The 8645HS has a published transistor count of 25,000 million and a die size of 178 mm², while the P132i has no transistor or die size data recorded. The P132i's lower TDP of 28 watts versus 45 watts for the 8645HS suggests the P132i will sustain lower all-core clocks under prolonged load, but it also means the P132i is better suited for thermally constrained embedded designs.

The integrated graphics differ as well. The P132i uses the Radeon 840M, while the 8645HS uses the Radeon 760M. Without benchmark scores for either iGPU, the comparison is limited to naming and positioning, but the 840M is the newer part and is paired with the newer core architecture. The 8645HS supports only DDR5 memory, while the P132i supports both DDR5 and LPDDR5X, giving the P132i more flexibility in low-power and compact system designs. Both run dual-channel memory at the same recorded bandwidth of 89.6 GB/s.

The PCIe configuration also favors the 8645HS. It provides 20 Gen 4 lanes from the CPU, while the P132i provides 14 Gen 4 lanes. That six-lane difference matters for embedded systems that need multiple NVMe drives, high-bandwidth I/O cards, or additional accelerators. Both parts support ECC memory, which is expected for embedded and industrial use cases.

Architecture Differences

The core architectures represent the most significant divide. The P132i is built on the Gorgon Point platform and belongs to the Ryzen AI Embedded generation, which uses a hybrid arrangement of Zen 5 and Zen 5c cores. The 8645HS is a straight Zen 4 design from the Hawk Point generation, part of the 8000 series. Zen 5 and Zen 5c cores are newer, and the 5c cores are optimized for power efficiency, which aligns with the P132i's 28-watt TDP. The 8645HS, with its 45-watt TDP and Zen 4 cores, is optimized for higher sustained performance within a larger thermal envelope.

The cache hierarchy differs in both size and organization. The P132i has 80 KB of L1 per core, 1 MB of L2 per core, and only 4 MB of L3 total. The 8645HS has 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. The L2 is identical per core, but the L3 gap is substantial. A fourfold difference in last-level cache can change the performance profile for memory-heavy workloads, especially when the working set exceeds 4 MB. The P132i's larger L1 may help with smaller, frequently accessed data, but the 8645HS's larger L3 gives it a broader safety margin for cache misses.

The process node is the same, 4 nm at TSMC, for both parts. This means the architectural improvements in the P132i are not assisted by a denser or more efficient manufacturing process. The 8645HS compensates for its older Zen 4 architecture with much higher base clocks, 4.30 GHz versus 2.00 GHz, and a higher boost clock, 5.00 GHz versus 4.50 GHz. Clock speed differences of this magnitude often dominate in single-threaded benchmarks, where the newer architecture's IPC gains may not fully close the gap.

Memory support is another point of divergence. The P132i supports DDR5 and LPDDR5X, while the 8645HS supports DDR5 only. LPDDR5X support enables lower power memory configurations, which pairs naturally with the P132i's lower TDP. Both parts use dual-channel memory at the same peak bandwidth of 89.6 GB/s, so the memory bandwidth ceiling is identical. The difference is in memory type flexibility, not throughput.

PCIe lane counts differ, with the 8645HS offering 20 Gen 4 lanes versus 14 Gen 4 lanes for the P132i. Both support the same PCIe generation, but the 8645HS can connect more devices directly to the CPU. This affects system design choices for storage, networking, and expansion. The P132i's lower lane count may push some designs to use a chipset or switch for additional connectivity.

The 8645HS has published transistor and die size figures, 25,000 million transistors and 178 mm², while the P132i has no recorded values. This is a data gap, not necessarily an architectural advantage. The P132i's hybrid core design could imply a different die layout, but the database does not provide those details.

FAQ

Q: Which processor has the higher base clock?

A: The AMD Ryzen Embedded 8645HS has a base clock of 4.30 GHz, while the AMD Ryzen AI Embedded P132i has a base clock of 2.00 GHz.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Ryzen AI Embedded P132i and the AMD Ryzen Embedded 8645HS have ECC memory support enabled.

Q: Which processor has more L3 cache?

A: The AMD Ryzen Embedded 8645HS has 16 MB of shared L3 cache. The AMD Ryzen AI Embedded P132i has 4 MB of L3 cache.

Q: Are both processors manufactured on the same process node?

A: Yes, both processors are manufactured on a 4 nm process at TSMC.

Q: What memory types does each processor support?

A: The AMD Ryzen AI Embedded P132i supports DDR5 and LPDDR5X. The AMD Ryzen Embedded 8645HS supports DDR5 only.

Q: Which processor has a lower TDP?

A: The AMD Ryzen AI Embedded P132i has a TDP of 28 watts. The AMD Ryzen Embedded 8645HS has a TDP of 45 watts.

Specification Differences

| Specification | AMD Ryzen AI Embedded P132i | AMD Ryzen Embedded 8645HS |

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

| Base clock | 2.00 GHz | 4.30 GHz |

| Boost clock | 4.50 GHz | 5.00 GHz |

| TDP | 28 W | 45 W |

| Codename | Gorgon Point | Hawk Point |

| Generation | Ryzen AI Embedded (Zen 5 / Zen 5c) | Ryzen Embedded (Zen 4) |

| Architecture | Zen 5 / Zen 5c | Zen 4 |

| Transistors | Not recorded | 25,000 million |

| Die size | Not recorded | 178 mm² |

| L1 cache | 80 KB per core | 64 KB per core |

| L3 cache | 4 MB | 16 MB shared |

| Memory support | DDR5, LPDDR5X | DDR5 |

| PCIe lanes | 14 Gen 4 lanes (CPU only) | 20 Gen 4 lanes (CPU only) |

| Integrated graphics | Radeon 840M | Radeon 760M |

| Release date | 2026-03-08 | 2024-04-01 |

The two processors share several specifications as well. Both have 6 cores and 12 threads. Both use dual-channel memory with a recorded bandwidth of 89.6 GB/s. Both use the AMD Socket FP8. Both have 1 MB of L2 cache per core. Both support ECC memory. Both are unlocked for multiplier adjustment? No, both have multiplierUnlocked set to false. Both are active production parts in the mobile market segment. Both are manufactured by AMD at TSMC on a 4 nm process. Neither has a recorded launch MSRP in the database.

The release dates are separated by nearly two years, with the 8645HS released on 2024-04-01 and the P132i released on 2026-03-08. The P132i is the newer part by that measure. The 8645HS belongs to the 8000 series, while the P132i has no series designation recorded. The P132i's part number is also listed as unknown, as is the 8645HS's.

Where Each One Wins

The AMD Ryzen Embedded 8645HS is positioned for workloads where raw clock speed and large last-level cache matter. Its base clock of 4.30 GHz and boost clock of 5.00 GHz give it a clear advantage in single-threaded and lightly threaded tasks. The 16 MB L3 cache supports workloads with sizable working sets, reducing the frequency of memory accesses. The 45-watt TDP allows for higher sustained all-core clocks in systems with adequate cooling. The 20 PCIe Gen 4 lanes provide more direct I/O bandwidth for storage arrays, network interfaces, and expansion devices. The 8645HS is the stronger choice for compute-heavy embedded applications where power consumption is secondary to throughput.

The AMD Ryzen AI Embedded P132i is positioned for thermally constrained and power-sensitive designs. Its 28-watt TDP is significantly lower, which enables smaller heatsinks, passive cooling in some chassis, and longer battery life in mobile embedded systems. The Zen 5 and Zen 5c core architecture is newer than Zen 4, and the larger 80 KB L1 cache per core can improve performance in latency-sensitive code. The support for LPDDR5X memory allows the system designer to pair the P132i with lower-power memory, further reducing the total platform power draw. The smaller 4 MB L3 cache and lower clock speeds mean the P132i is not likely to match the 8645HS in sustained compute performance, but it offers a more efficient package for embedded applications that prioritize power and thermal budgets.

In terms of integrated graphics, the P132i uses the Radeon 840M while the 8645HS uses the Radeon 760M. The database does not include benchmark scores for either iGPU, so a direct performance claim cannot be made. The newer part, the P132i, pairs its newer iGPU with a newer core architecture, which may improve driver efficiency and feature support, but the measurable performance difference remains unrecorded.

Both processors share the same memory bandwidth ceiling of 89.6 GB/s, the same dual-channel bus, the same 6-core and 12-thread configuration, and the same 4 nm TSMC process node. These shared specifications mean the performance gap is driven by clock speed, cache size, and architecture generation, not by fundamental platform differences. The 8645HS wins on raw frequency and cache capacity. The P132i wins on power efficiency, memory type flexibility, and architectural recency.

The database shows no direct benchmark wins for either processor, and both have equal percentile rankings of 50. Without measured scores, the analysis rests on specification-level comparisons. The 8645HS should dominate in CPU-bound workloads that respond to clock speed and large caches. The P132i should excel in power-constrained environments where the lower TDP and LPDDR5X support enable system designs that the 8645HS cannot match. The choice between the two depends entirely on the embedded system's priorities: maximum performance per socket or maximum efficiency per watt.