AMD EPYC 4545P vs AMD EPYC 8224P Comparison

# AMD EPYC 8224P vs AMD EPYC 4545P

The AMD EPYC 8224P and AMD EPYC 4545P represent two distinct design philosophies within AMD's server lineup, trading blows across different workload types. The 8224P, a 24-core Siena part, wins on data-heavy PassMark tasks, while the 4545P, a 16-core Grado chip with Zen 5 cores, dominates Cinebench and most compute benchmarks. Despite the 4545P winning 14 of 17 head-to-head tests, both processors land at the 95th percentile among all CPUs, with average benchmark scores separated by less than 0.3% (75,582 for the 8224P versus 75,373 for the 4545P). The choice between them hinges on whether the workload favors the 8224P's higher core count and memory bandwidth or the 4545P's superior single-thread performance and clock speeds.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 8224P has 24 cores and 48 threads, while the AMD EPYC 4545P has 16 cores and 32 threads. The 8224P offers 50% more cores and threads than its rival.

Q: How do the two compare in single-threaded performance?

A: The 4545P wins decisively in single-thread tests. In PassMark single-thread, it scores 4,318 versus 2,339 for the 8224P, a 45.8% advantage. Cinebench R23 single-core shows a similar gap: 6,646 versus 5,450, with the 4545P leading by 18%.

Q: Which CPU wins in multi-core Cinebench tests?

A: The 4545P wins every multi-core Cinebench test despite having fewer cores. In Cinebench R23 multi-core, it scores 47,079 versus 38,607 for the 8224P, an 18% lead. The same 18% delta appears in Cinebench R15 and R20 multi-core.

Q: Are there any benchmarks where the 8224P wins?

A: Yes, the 8224P wins 3 of 17 head-to-head benchmarks. It leads in PassMark data compression (702,065 versus 636,279, +10.3%), data encryption (46,742 versus 37,598, +24.3%), and random string sorting (81,674 versus 73,850, +10.6%).

Q: What are the TDP differences?

A: The 8224P has a TDP of 160 watts, while the 4545P has a TDP of 65 watts. The 4545P delivers higher performance in most tests while consuming less than half the thermal design power.

Q: Which processor has a higher launch MSRP?

A: The 8224P has a launch MSRP of $855, while the 4545P has a launch MSRP of $549. The 8224P costs more at launch, though both remain active products.

Architecture Differences

The two processors diverge fundamentally in architecture generation and physical design. The 8224P uses Zen 4c architecture on a 5 nm process, codenamed Siena, while the 4545P uses Zen 5 on a 4 nm process, codenamed Grado. Both are fabricated by TSMC, but the 8224P integrates 17,750 million transistors across a die size of 2x 73 mm², whereas the 4545P packs 16,630 million transistors into 2x 70.6 mm².

Core configuration differs significantly. The 8224P's Zen 4c cores are density-optimized, running at a base clock of 2.55 GHz with a boost clock of 3.00 GHz. The 4545P's Zen 5 cores prioritize frequency, operating at a 3.00 GHz base and a 5.40 GHz boost. This clock advantage — 2.4 GHz higher boost — explains much of the 4545P's single-thread dominance. Cache layouts also differ: the 8224P has 64 KB L1 per core and 1 MB L2 per core, while the 4545P has 80 KB L1 per core and 1 MB L2 per core. Both share 64 MB L3, though the 8224P's is marked as shared while the 4545P lists it simply as 64 MB.

Memory architecture presents another major divergence. The 8224P supports six-channel DDR5 memory with a bandwidth of 230.4 GB/s, while the 4545P uses dual-channel DDR5 with 89.6 GB/s. This 2.57x bandwidth advantage for the 8224P directly supports its wins in data-intensive PassMark tests. PCIe lane counts also differ substantially: the 8224P offers 96 Gen 5 lanes (CPU only), while the 4545P provides 24 Gen 5 lanes. The 4545P includes integrated Radeon Graphics, whereas the 8224P has no integrated graphics. Socket compatibility reflects this split: the 8224P uses AMD Socket SP6, while the 4545P fits AMD Socket AM5. Both support ECC memory and have locked multipliers. The 8224P released on 2023-09-17, while the 4545P launched on 2025-05-12.

The Verdict

The data presents a clear split: the 4545P is the superior general-purpose compute processor, while the 8224P excels in specific data-heavy server workloads. Benchmark results show the 4545P winning 14 of 17 head-to-head comparisons, including sweeping all six Cinebench tests (R15, R20, R23, both single and multi-core) by 18% or more. Its PassMark wins include integer math (+13.1%), floating-point math (+17.2%), extended instructions (+5.7%), find prime numbers (+29.5%), multithread (+15.1%), and physics (+0.7%). The 8224P's wins are narrower in count but significant in magnitude: data encryption (+24.3%), data compression (+10.3%), and random string sorting (+10.6%).

For buyers prioritizing raw single-thread performance, the 4545P is the clear choice. Its PassMark single-thread score of 4,318 represents a 45.8% advantage over the 8224P's 2,339, and its Cinebench R23 single-core lead of 18% confirms the trend. The 4545P also offers lower power consumption at 65 watts TDP versus 160 watts, making it more thermally efficient while delivering higher performance in most tests. Its dual-channel memory and 24 PCIe lanes suffice for workstations and lighter server roles.

The 8224P remains compelling for workloads that leverage memory bandwidth and core density. Its six-channel memory controller, delivering 230.4 GB/s, drives its 24.3% encryption advantage and 10.6% random string sorting lead. The 96 PCIe Gen 5 lanes support high-throughput I/O configurations. However, the 8224P's 18% deficit in every Cinebench test and 45.8% gap in single-thread performance suggest it will lag in latency-sensitive or lightly threaded applications. The 8224P's higher launch MSRP of $855 versus $549 for the 4545P further narrows its appeal unless the specific PassMark workloads it wins are dominant in the deployment environment.

Specification Differences

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

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

| Series | EPYC 8004 series | EPYC 4005 series |

| 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) |

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

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

| 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 |

| Launch MSRP | $855 | $549 |

| Part Number | 100-000001134 | 100-000001764 |

Head-to-Head Benchmarks

The Cinebench suite shows a consistent 18% performance advantage for the 4545P across all six tests. In Cinebench R15 multi-core, the 4545P scores 4,745 versus 3,891 for the 8224P; single-core shows 669 versus 549. Cinebench R20 multi-core yields 19,773 against 16,214, and single-core 2,791 versus 2,289. Cinebench R23 multi-core produces the largest absolute gap: 47,079 versus 38,607, with single-core at 6,646 versus 5,450. These results indicate that the 4545P's Zen 5 architecture and higher clocks overcome the 8224P's 8-core and 16-thread advantage in every rendering-style workload.

PassMark results reveal a more nuanced picture. The 8224P's biggest win comes in data encryption, where it scores 46,742 against 37,598, a 24.3% margin. Data compression also favors the 8224P: 702,065 versus 636,279, a 10.3% lead. Random string sorting completes the 8224P's wins at 81,674 versus 73,850, a 10.6% edge. These three tests share a common thread: they benefit from memory bandwidth, where the 8224P's six-channel configuration provides 230.4 GB/s versus 89.6 GB/s.

The 4545P's PassMark wins span every other category. The largest margin is in single-thread performance, where it doubles the 8224P's score: 4,318 versus 2,339, a 45.8% gap. Find prime numbers shows a 29.5% lead (292 versus 206). Floating-point math favors the 4545P by 17.2% (126,505 versus 104,698), and integer math by 13.1% (213,485 versus 185,556). Multithread performance gives the 4545P a 15.1% edge (53,504 versus 45,421), while extended instructions show a narrower 5.7% lead (46,231 versus 43,614). Physics is nearly identical: 3,260 versus 3,236, a 0.7% difference that represents the closest contest in the entire benchmark set.

Average benchmark scores place both CPUs within 0.3% of each other: 75,582 for the 8224P and 75,373 for the 4545P. Both sit at the 95th percentile among all CPUs, and each lists the other as a nearest rival. The 8224P's nearest rivals include the Intel Core Ultra 9 285 (75,488, +0.1%), AMD Ryzen 7 PRO 9755X3D (75,716, -0.2%), and AMD Ryzen 7 PRO 9755 (75,738, -0.2%). The 4545P's nearest rivals include the same Intel part (-0.2%), the 8224P (-0.3%), and both Ryzen PRO chips (-0.5%). This clustering confirms that despite their architectural differences, these processors deliver nearly identical aggregate performance.