AMD EPYC 4545P vs AMD EPYC Embedded 8224P Comparison

The AMD EPYC Embedded 8224P and AMD EPYC 4545P are two very different server processors that land nearly on the same average benchmark score, yet they achieve that parity through opposite design philosophies. The 8224P uses a higher core count with a dense architecture, while the 4545P counters with far higher clock speeds and a newer core design. The data shows the 4545P wins 12 of the 17 head-to-head benchmarks, but the 8224P claims victories in several specialized workloads, making the choice entirely dependent on the intended application.

Head-to-Head Benchmarks

The AMD EPYC 4545P dominates the multi-threaded rendering tests with a consistent 11.8% advantage across all Cinebench versions. In Cinebench R23 multi-core, the 4545P scores 47079 against the 8224P’s 41542, and the same 11.8% delta appears in Cinebench R15 multi-core (4745 vs 4187) and Cinebench R20 multi-core (19773 vs 17447). This consistency suggests a fundamental throughput advantage for the 4545P in heavily parallel CPU workloads, despite having 8 fewer cores and 16 fewer threads.

Single-core performance tells an even more lopsided story. The 4545P’s Passmark single-thread score of 4568 crushes the 8224P’s 2357, a massive 48.4% gap. In Cinebench R23 single-core, the margin narrows to 11.8% (6646 vs 5864), but the Passmark result highlights how much faster the 4545P is on lightly-threaded tasks. This is the biggest single benchmark difference between the two processors and reflects the 4545P’s 5.40 GHz boost clock versus the 8224P’s 3.00 GHz maximum.

The 4545P also wins integer-heavy workloads. Passmark integer math shows 218623 for the 4545P versus 193256 for the 8224P, an 11.6% edge. Floating point math also favors the 4545P (127400 vs 120066, a 5.8% win), and the 4545P takes the multithread Passmark test at 55388 versus 48873, another 11.8% margin. Even in prime number finding, the 4545P wins narrowly at 296 versus 286, a 3.4% advantage.

However, the 8224P holds its own in several specialized workloads. Its biggest win comes in Passmark physics, scoring 4110 against the 4545P’s 3525 — a commanding 16.6% lead. Data encryption shows an 11.7% win for the 8224P (43619 vs 39033), and random string sorting goes to the 8224P by 12.5% (85505 vs 76031). The 8224P also wins data compression (681754 vs 643120, a 6% margin) and extended instructions (46091 vs 45111, a 2.2% edge). These five wins indicate the 8224P’s extra cores are valuable in specific memory-intensive or cryptographic workloads, even when the 4545P wins the broader CPU benchmarks.

Architecture Differences

The two chips come from different generations and use different core designs. The EPYC Embedded 8224P is built on Zen 4c architecture with the codename Siena, while the EPYC 4545P uses the newer Zen 5 architecture with the codename Grado. The 8224P is fabricated on a 5 nm process at TSMC, whereas the 4545P uses a more advanced 4 nm process, also at TSMC. The 8224P packs 17,750 million transistors across a 2x 73 mm² die, while the 4545P has 16,630 million transistors on a slightly smaller 2x 70.6 mm² die.

Core counts differ significantly: the 8224P offers 24 cores and 48 threads, while the 4545P provides 16 cores and 32 threads. Cache layouts also diverge. Both share 64 MB of L3 cache, but the 8224P has 64 KB of L1 per core versus 80 KB per core on the 4545P. L2 cache is identical at 1 MB per core.

Memory architecture is a major differentiator. The 8224P supports six-channel DDR5 memory with 230.4 GB/s of bandwidth, while the 4545P is limited to dual-channel DDR5 with 89.6 GB/s. Both support ECC memory. PCIe connectivity also differs drastically: the 8224P provides Gen 5 with 96 lanes (CPU only), while the 4545P offers Gen 5 with only 24 lanes. The 4545P includes integrated Radeon Graphics, whereas the 8224P has no integrated graphics.

The 8224P uses AMD Socket SP6, while the 4545P fits into AMD Socket AM5. Clock speeds show a stark contrast: the 8224P runs at 2.55 GHz base and 3.00 GHz boost, while the 4545P runs at 3.00 GHz base and 5.40 GHz boost. Power consumption is also very different, with the 8224P rated at 160 W TDP versus just 65 W for the 4545P. Neither chip has an unlocked multiplier.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD EPYC Embedded 8224P has an average benchmark score of 76492, while the AMD EPYC 4545P scores 76433. The difference is only 0.1%, making them statistically equivalent overall.

Q: How much faster is the 4545P in single-threaded performance?

A: In Passmark single-thread testing, the 4545P scores 4568 versus the 8224P’s 2357, a 48.4% advantage. In Cinebench R23 single-core, the 4545P leads by 11.8% with a score of 6646 against 5864.

Q: Does the 8224P win any benchmarks?

A: Yes, the 8224P wins 5 of 17 head-to-head tests. Its largest victory is in Passmark physics (4110 vs 3525, a 16.6% lead), followed by random string sorting (12.5% win), data encryption (11.7% win), data compression (6% win), and extended instructions (2.2% win).

Q: What is the memory bandwidth difference?

A: The 8224P supports six-channel DDR5 memory with 230.4 GB/s bandwidth, while the 4545P uses dual-channel DDR5 with 89.6 GB/s. This gives the 8224P roughly 2.5 times the theoretical memory bandwidth.

Q: Which processor has more PCIe lanes?

A: The 8224P provides Gen 5 with 96 lanes (CPU only), while the 4545P offers Gen 5 with only 24 lanes. This makes the 8224P significantly more expandable for storage or accelerator cards.

Q: When were these processors released?

A: The EPYC Embedded 8224P was released on 2023-09-17, while the EPYC 4545P arrived later on 2025-05-12.

Specification Differences

| Specification | AMD EPYC Embedded 8224P | AMD EPYC 4545P |

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

| Cores | 24 | 16 |

| Threads | 48 | 32 |

| Base Clock | 2.55 GHz | 3.00 GHz |

| Boost Clock | 3.00 GHz | 5.40 GHz |

| TDP | 160 W | 65 W |

| Socket | AMD Socket SP6 | AMD Socket AM5 |

| Architecture | Zen 4c | Zen 5 |

| Codename | Siena | Grado |

| Process Node | 5 nm | 4 nm |

| Transistors | 17,750 million | 16,630 million |

| Die Size | 2x 73 mm² | 2x 70.6 mm² |

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

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

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

| PCIe | Gen 5, 96 Lanes (CPU only) | Gen 5, 24 Lanes (CPU only) |

| Integrated Graphics | None | Radeon Graphics |

| Release Date | 2023-09-17 | 2025-05-12 |

The two chips share identical L2 cache (1 MB per core), L3 cache (64 MB shared), memory type (DDR5), ECC support, and foundry (TSMC). Both are active in production and target the Server/Workstation segment. Neither has a launch MSRP listed except the 4545P, which has a launch MSRP of $549.

Where Each One Wins

The AMD EPYC 4545P is the clear winner for general-purpose compute, rendering, and single-threaded applications. Its 11.8% advantage across every Cinebench multi-core test makes it the better choice for 3D rendering, video encoding, and simulation workloads that scale across threads. The 48.4% lead in Passmark single-thread performance means it excels in databases, web servers, and any application with latency-sensitive single-threaded components. The 4545P also wins integer math by 11.6%, floating-point math by 5.8%, and the multithread Passmark test by 11.8%, making it the more versatile processor for mixed workloads. Its 65 W TDP also makes it far easier to cool in dense server environments.

The AMD EPYC Embedded 8224P wins in specific specialized areas. Its 16.6% lead in Passmark physics suggests an advantage in scientific computing and physics simulation. The 11.7% win in data encryption indicates it is better suited for cryptographic workloads, VPN gateways, and secure communications. Random string sorting (12.5% win) points to advantages in data processing and text manipulation tasks. The 6% win in data compression and 2.2% win in extended instructions round out its profile for compression-heavy storage workloads. The 8224P also offers six-channel memory with 230.4 GB/s bandwidth versus dual-channel 89.6 GB/s, making it superior for memory-bandwidth-bound applications like large in-memory databases. Its 96 PCIe Gen 5 lanes versus 24 lanes makes it the clear choice for systems requiring many NVMe drives, GPUs, or network accelerators.

The Verdict

The data indicates that the AMD EPYC 4545P is the better overall processor for most users. It wins 12 of 17 benchmarks, including every Cinebench test, and its 48.4% single-thread advantage is decisive for interactive or latency-sensitive workloads. The 4545P achieves this with fewer cores and a much lower 65 W TDP, making it the more efficient choice for rack density and cooling. Its Zen 5 architecture on 4 nm also represents a newer generation than the 8224P’s Zen 4c on 5 nm.

However, the AMD EPYC Embedded 8224P remains the right pick for specific use cases. If the workload is dominated by physics simulation, encryption, compression, or random string sorting, the 8224P’s wins of 16.6%, 11.7%, 6%, and 12.5% respectively make it the superior choice. The six-channel memory bus with 230.4 GB/s bandwidth is a massive advantage over the 4545P’s 89.6 GB/s, and the 96 PCIe Gen 5 lanes provide unmatched expandability. For embedded systems needing maximum I/O or memory throughput, the 8224P is the data-backed winner.

In summary, the 4545P is the broader, faster processor for mainstream server workloads, while the 8224P is the specialized heavyweight for memory-bandwidth-hungry and cryptographic applications. The 0.1% difference in average benchmark scores between them is negligible; the real decision comes down to the specific benchmark wins that match the target workload. Choose the 4545P for general compute and single-thread performance, choose the 8224P for physics, encryption, and massive I/O configurations.