AMD EPYC Embedded 8224P vs AMD Ryzen AI 9 HX PRO 475 Comparison

The AMD Ryzen AI 9 HX PRO 475 and AMD EPYC Embedded 8224P occupy opposite ends of the computing spectrum, yet the benchmark data reveals a clear and predictable split: the mobile Ryzen part dominates single-threaded tasks while the server-class EPYC part crushes every multi-threaded workload in the comparison. The head-to-head results show the EPYC winning 9 of 11 benchmark categories, with the Ryzen taking only the two single-thread tests, albeit by a commanding margin.

Head-to-Head Benchmarks

The most dramatic disparity appears in the single-thread tests. The Ryzen AI 9 HX PRO 475 scores 4301 in PassMark single-thread, which is 82.5% higher than the EPYC Embedded 8224P's 2357. This is the only category where the Ryzen wins, and it wins decisively. The 2.00 GHz base and 5.20 GHz boost clock of the Ryzen, paired with its Zen 5 architecture, deliver a massive frequency advantage over the EPYC's 2.55 GHz base and 3.00 GHz boost, and the data reflects that gap almost exactly.

Every other benchmark belongs to the EPYC Embedded 8224P, often by substantial margins. The largest delta is in PassMark physics, where the EPYC scores 4110 against the Ryzen's 1877, a 54.3% advantage. The prime number test shows a similar pattern: EPYC at 286 versus Ryzen at 130, a 54.5% lead. These two workloads are heavily dependent on raw core count and sustained throughput, areas where the EPYC's 24 cores and 48 threads simply overpower the Ryzen's 12 cores and 24 threads.

The multi-threaded PassMark score tells a slightly less lopsided story. The EPYC scores 48873 versus the Ryzen's 36487, a 25.3% lead. This is the narrowest of the EPYC's multi-thread wins, suggesting that the Ryzen's higher per-core efficiency partially compensates for its core deficit in mixed workloads. Data compression follows a similar trend: EPYC at 681754 versus Ryzen at 461650, a 32.3% delta. The EPYC's advantage grows in more parallelizable tasks: integer math shows a 34.4% lead (193256 vs 126829), floating-point math shows 33.5% (120066 vs 79887), and extended instructions show 30.6% (46091 vs 31969).

The two remaining categories show the EPYC's dominance in memory-sensitive operations. Random string sorting sees the EPYC at 85505 versus the Ryzen's 48894, a 42.8% gap, and data encryption shows the EPYC at 43619 versus 23132, a 47% lead. These results align with the EPYC's six-channel memory bus and 230.4 GB/s bandwidth, which dwarf the Ryzen's dual-channel 89.6 GB/s configuration.

Where Each One Wins

The Ryzen AI 9 HX PRO 475 wins exclusively in single-threaded performance. Its 4301 PassMark single-thread score, boosted by a 5.20 GHz maximum clock, makes it the clear choice for workloads that cannot parallelize across many cores. This includes legacy applications, lightly threaded tasks, and any scenario where per-core responsiveness is the bottleneck. The 82.5% single-thread advantage over the EPYC is not marginal; it is a generational gap in favor of the Ryzen.

The EPYC Embedded 8224P wins everywhere else. For any workload that can utilize more than a handful of cores, the EPYC's 24-core, 48-thread configuration provides a decisive edge. The most striking wins are in physics simulation (54.3% ahead) and prime number finding (54.5% ahead), both of which scale almost linearly with core count. The EPYC also leads substantially in memory-bound tasks like data encryption (47% ahead) and random string sorting (42.8% ahead), thanks to its six-channel memory subsystem. For server virtualization, database workloads, scientific computing, or content rendering that scales across threads, the EPYC is the superior processor by every measured metric.

Architecture Differences

The two processors represent divergent design philosophies from AMD. The Ryzen AI 9 HX PRO 475 uses the Zen 5 architecture on a 4 nm TSMC process, codenamed Gorgon Point. It features 12 cores and 24 threads with a 28 W TDP, emphasizing efficiency and high clock speeds. The cache hierarchy consists of 80 KB L1 per core, 1 MB L2 per core, and 16 MB of shared L3. It supports dual-channel DDR5 or LPDDR5X memory with 89.6 GB/s bandwidth, and includes integrated Radeon 890M graphics. The Ryzen also has ECC memory support and uses AMD Socket FP8, with PCIe Gen 4 providing 16 CPU lanes.

The EPYC Embedded 8224P uses the Zen 4c architecture on a 5 nm TSMC process, codenamed Siena. It doubles the core count to 24 cores and 48 threads, but at a much higher 160 W TDP. The cache layout differs significantly: 64 KB L1 per core, 1 MB L2 per core, and a larger 64 MB shared L3. The EPYC supports six-channel DDR5 memory with 230.4 GB/s bandwidth, more than 2.5 times the Ryzen's memory bandwidth. It uses AMD Socket SP6 and provides 96 PCIe Gen 5 lanes, a substantial increase over the Ryzen's 16 Gen 4 lanes. The EPYC has no integrated graphics and is built with 17,750 million transistors across two 73 mm² dies, while the Ryzen uses a single 233 mm² die. Both support ECC memory, and neither has an unlocked multiplier.

The transistor count and die size differences reflect the target markets: the Ryzen integrates graphics and mobile-oriented features into a single die, while the EPYC focuses purely on compute and I/O expansion. The EPYC's 64 MB L3 cache is four times the Ryzen's 16 MB, which contributes to its strong performance in cache-sensitive server workloads. The generation gap also matters: the Ryzen is from the Ryzen AI PRO 400 series (Zen 5 / Zen 5c), released in early 2026, while the EPYC is from the EPYC 8004 series (Zen 4c), released in late 2023.

The Verdict

The data makes the choice straightforward. The AMD Ryzen AI 9 HX PRO 475 is for users who need maximum single-thread performance in a mobile or low-power context. Its 82.5% single-thread lead over the EPYC, combined with a 28 W TDP and integrated graphics, makes it ideal for laptops or compact systems where responsiveness and efficiency matter more than raw throughput. The Ryzen also holds a 94th percentile ranking among all CPUs, just behind the EPYC's 95th percentile, but its average benchmark score of 74496 is 2.6% lower than the EPYC's 76492.

The AMD EPYC Embedded 8224P is for server and workstation deployments where multi-threaded performance is paramount. It wins 9 of 11 head-to-head benchmarks, with leads ranging from 25.3% in multi-thread to 54.5% in prime number finding. Its 24 cores, 48 threads, six-channel memory, and 96 PCIe Gen 5 lanes make it the correct choice for virtualization, data processing, and any parallel workload. The EPYC's average benchmark score of 76492 places it in the 95th percentile, and its nearest rival, the AMD Ryzen Threadripper PRO 9945WX, scores 76513 with a 0% delta, indicating this EPYC sits at the top of its performance class.

FAQ

Q: Which processor has higher single-thread performance?

A: The AMD Ryzen AI 9 HX PRO 475 scores 4301 in PassMark single-thread, which is 82.5% higher than the EPYC Embedded 8224P's 2357.

Q: How much faster is the EPYC in multi-threaded workloads?

A: The EPYC Embedded 8224P scores 48873 in PassMark multi-thread versus 36487 for the Ryzen, a 25.3% advantage.

Q: What are the core and thread counts for each?

A: The Ryzen AI 9 HX PRO 475 has 12 cores and 24 threads. The EPYC Embedded 8224P has 24 cores and 48 threads.

Q: Which processor supports more memory bandwidth?

A: The EPYC Embedded 8224P supports six-channel DDR5 with 230.4 GB/s bandwidth, while the Ryzen AI 9 HX PRO 475 supports dual-channel DDR5/LPDDR5X with 89.6 GB/s.

Q: Do both processors support ECC memory?

A: Yes, both the Ryzen AI 9 HX PRO 475 and the EPYC Embedded 8224P list ECC memory support as true.

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

A: The largest margin is in PassMark find prime numbers, where the EPYC scores 286 against the Ryzen's 130, a 54.5% difference.

Specification Differences

| Specification | AMD Ryzen AI 9 HX PRO 475 | AMD EPYC Embedded 8224P |

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

| Cores | 12 | 24 |

| Threads | 24 | 48 |

| Base Clock | 2.00 GHz | 2.55 GHz |

| Boost Clock | 5.20 GHz | 3.00 GHz |

| TDP | 28 W | 160 W |

| Socket | AMD Socket FP8 | AMD Socket SP6 |

| Architecture | Zen 5 | Zen 4c |

| Codename | Gorgon Point | Siena |

| Process Node | 4 nm | 5 nm |

| Transistors | Not specified | 17,750 million |

| Die Size | 233 mm² | 2x 73 mm² |

| L1 Cache | 80 KB (per core) | 64 KB (per core) |

| L2 Cache | 1 MB (per core) | 1 MB (per core) |

| L3 Cache | 16 MB | 64 MB (shared) |

| Memory Support | DDR5, LPDDR5X | DDR5 |

| Memory Bus | Dual-channel | Six-channel |

| Memory Bandwidth | 89.6 GB/s | 230.4 GB/s |

| PCIe | Gen 4, 16 Lanes (CPU only) | Gen 5, 96 Lanes (CPU only) |

| Integrated Graphics | Radeon 890M | None |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2026-01-04 | 2023-09-17 |