AMD EPYC 4124P vs AMD Ryzen 7 5800H Comparison

The AMD Ryzen 7 5800H and AMD EPYC 4124P are both 76th-percentile performers, but they achieve that standing through opposite strategies. The Ryzen 7 5800H dominates in multi-threaded throughput and data-heavy workloads, winning 9 of 15 head-to-head benchmarks. The EPYC 4124P counters with superior single-thread speed and physics performance, winning 6 of 15 tests. Despite the EPYC’s higher boost clock and newer architecture, the Ryzen 7’s 8-core/16-thread configuration gives it a decisive edge in raw parallel processing, while the EPYC’s 4-core/8-thread design focuses its power on latency-sensitive tasks.

Head-to-Head Benchmarks

The Ryzen 7 5800H’s biggest win comes in PassMark integer math, where it scores 80,786 against the EPYC 4124P’s 52,855 — a 52.8% advantage. This is the largest delta in the entire comparison and reflects the Ryzen 7’s core-count advantage in heavily parallel integer workloads. The Ryzen 7 also leads in data encryption by 45.8% (16,962 vs 11,630) and floating-point math by 41.1% (44,479 vs 31,518). Data compression follows at 32.1% (270,608 vs 204,926), showing the Ryzen 7’s ability to sustain high throughput across diverse computational tasks.

In Cinebench R15 multicore, the Ryzen 7 scores 2,005 against the EPYC’s 1,538, a 30.4% lead. The Ryzen 7 also wins Cinebench R15 single-core by 6% (229 vs 216), although this is the closest margin in the entire suite. PassMark extended instructions favor the Ryzen 7 by 21% (18,203 vs 15,049), and random string sorting by 16% (28,144 vs 24,259). The PassMark multithread score shows a 14.6% advantage (20,789 vs 18,139), reinforcing the pattern: the Ryzen 7 wins virtually every test that scales with thread count.

The EPYC 4124P’s counterattack is led by Cinebench R23 single-core, where it scores 2,154 against the Ryzen 7’s 1,416 — a 34.3% advantage. This is the EPYC’s largest win and highlights its Zen 4 architecture’s superior per-core efficiency. In PassMark single-thread, the EPYC leads by 22.5% (3,897 vs 3,021), and in PassMark physics it wins by 23.6% (1,087 vs 830). The EPYC also excels at prime number finding, scoring 89 vs 49, a 44.9% advantage. In Cinebench R23 multicore, the EPYC posts 15,264 vs 12,091.5, a 20.8% lead — a surprising result given the Ryzen 7’s core advantage, likely due to the EPYC’s higher boost clock of 5.10 GHz versus 4.40 GHz.

Architecture Differences

The two processors represent distinct generations and design philosophies. The Ryzen 7 5800H uses Zen 3 architecture on a 7 nm TSMC process, with a die size of 180 mm² and 10,700 million transistors. The EPYC 4124P uses Zen 4 on a 5 nm TSMC process, with a significantly smaller die of 71 mm² and 6,570 million transistors. This process shrink explains the EPYC’s efficiency gains and higher clock speeds despite its lower core count.

Cache configurations differ substantially. Both share 64 KB L1 per core, but the Ryzen 7 has 512 KB L2 per core versus the EPYC’s 1 MB per core. The L3 cache is where the gap widens: the Ryzen 7 has 16 MB shared, while the EPYC has 32 MB shared. This doubling of L3 cache, combined with the newer architecture, contributes to the EPYC’s single-thread dominance.

Memory support is a major differentiator. The Ryzen 7 uses DDR4 with dual-channel memory and a bandwidth of 68.3 GB/s. The EPYC uses DDR5 with dual-channel memory and a bandwidth of 83.2 GB/s. The EPYC also supports ECC memory, while the Ryzen 7 does not. The EPYC offers PCIe Gen 5 with 28 lanes (CPU only), whereas the Ryzen 7 provides PCIe Gen 3. Both include integrated graphics, but the Ryzen 7 features Radeon Vega 8 while the EPYC has a more generic Radeon Graphics solution.

The Ryzen 7 is a mobile processor on AMD Socket FP6, while the EPYC is a server/workstation part on AMD Socket AM5. The Ryzen 7 has a TDP of 45W, the EPYC 65W. The Ryzen 7 was released on 2021-01-11; the EPYC on 2024-05-20. The EPYC carries a launch MSRP of $149. Both have locked multipliers and active production status.

FAQ

Q: Which processor has better multi-core performance?

A: The Ryzen 7 5800H wins 9 of 15 benchmarks, including a 30.4% lead in Cinebench R15 multicore (2,005 vs 1,538) and a 52.8% lead in PassMark integer math (80,786 vs 52,855). However, the EPYC 4124P wins Cinebench R23 multicore by 20.8% (15,264 vs 12,091.5).

Q: Why does the EPYC 4124P win Cinebench R23 multicore despite having half the cores?

A: The EPYC’s boost clock is 5.10 GHz versus 4.40 GHz for the Ryzen 7, and it uses newer Zen 4 architecture with 32 MB L3 cache. These factors allow the 4-core EPYC to outpace the 8-core Ryzen 7 in this specific workload.

Q: How do the memory systems compare?

A: The Ryzen 7 supports DDR4 with 68.3 GB/s bandwidth and no ECC. The EPYC supports DDR5 with 83.2 GB/s bandwidth and ECC support. The EPYC’s memory bandwidth is 21.8% higher.

Q: Which processor has better single-thread performance?

A: The EPYC 4124P wins all single-thread tests, with a 34.3% lead in Cinebench R23 single-core (2,154 vs 1,416) and a 22.5% lead in PassMark single-thread (3,897 vs 3,021).

Q: What are the cache differences?

A: Both have 64 KB L1 per core. The Ryzen 7 has 512 KB L2 per core and 16 MB shared L3. The EPYC has 1 MB L2 per core and 32 MB shared L3.

Q: Which processor supports newer PCIe technology?

A: The EPYC 4124P supports PCIe Gen 5 with 28 lanes (CPU only). The Ryzen 7 supports PCIe Gen 3. The EPYC’s PCIe generation is two versions newer.

The Verdict

The Ryzen 7 5800H is the clear choice for multi-threaded throughput and data-intensive workloads. Its 52.8% lead in integer math, 45.8% lead in encryption, and 41.1% lead in floating-point math make it the superior processor for parallel processing tasks. The Ryzen 7 also wins PassMark multithread by 14.6% (20,789 vs 18,139), confirming its advantage in general multi-threaded scenarios.

The EPYC 4124P is the pick for single-thread performance and server-specific workloads. Its 34.3% lead in Cinebench R23 single-core and 22.5% lead in PassMark single-thread make it better for latency-sensitive applications. The EPYC’s 44.9% advantage in prime number finding suggests strength in cryptographic or mathematical workloads that rely on per-core speed. Its ECC memory support and PCIe Gen 5 connectivity also position it for server environments.

Both processors sit at the 76th percentile of all CPUs, and their average benchmark scores are nearly identical: 23,277 for the Ryzen 7 versus 23,167 for the EPYC, a 0.5% difference. This near-parity in overall averages masks the divergent strengths. The Ryzen 7 achieves its score through brute-force parallelism, while the EPYC achieves its score through architectural efficiency and clock speed.

Specification Differences

| Specification | AMD Ryzen 7 5800H | AMD EPYC 4124P |

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

| Cores | 8 | 4 |

| Threads | 16 | 8 |

| Base Clock | 3.20 GHz | 3.80 GHz |

| Boost Clock | 4.40 GHz | 5.10 GHz |

| TDP | 45W | 65W |

| Socket | AMD Socket FP6 | AMD Socket AM5 |

| Architecture | Zen 3 | Zen 4 |

| Codename | Cezanne | Raphael |

| Process Node | 7 nm | 5 nm |

| Transistors | 10,700 million | 6,570 million |

| Die Size | 180 mm² | 71 mm² |

| L2 Cache | 512 KB (per core) | 1 MB (per core) |

| L3 Cache | 16 MB (shared) | 32 MB (shared) |

| Memory Support | DDR4 | DDR5 |

| Memory Bandwidth | 68.3 GB/s | 83.2 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3 | Gen 5, 28 Lanes (CPU only) |

| Integrated Graphics | Radeon Vega 8 | Radeon Graphics |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2021-01-11 | 2024-05-20 |

| Launch MSRP | None | $149 |

| Part Number | 100-000000295 | 100-000001570 |

Where Each One Wins

The Ryzen 7 5800H wins in: integer math, data encryption, floating-point math, data compression, extended instructions, random string sorting, PassMark multithread, Cinebench R15 multicore, and Cinebench R15 single-core. These are workloads that scale with core count and thread count. The Ryzen 7’s 8 cores and 16 threads provide a 100% core advantage over the EPYC’s 4 cores and 8 threads, which manifests in its 52.8% integer math lead and 45.8% encryption lead.

The EPYC 4124P wins in: Cinebench R23 multicore, Cinebench R23 single-core, PassMark single-thread, PassMark physics, and prime number finding. These are workloads that favor higher clock speeds and newer architecture. The EPYC’s 5.10 GHz boost clock is 15.9% higher than the Ryzen 7’s 4.40 GHz, and its Zen 4 architecture with 32 MB L3 cache gives it a significant per-core efficiency advantage. The EPYC also wins on platform features: DDR5 memory, ECC support, and PCIe Gen 5 connectivity make it the better foundation for a server or workstation build despite its lower core count.