AMD EPYC 9454 vs AMD Ryzen 7 4800H Comparison

# AMD Ryzen 7 4800H vs AMD EPYC 9454

The AMD Ryzen 7 4800H and AMD EPYC 9454 occupy opposite ends of the AMD lineup, one a mobile processor for thin gaming laptops and the other a server chip for datacenter workloads. The benchmark data shows a complete sweep for the EPYC 9454 in every head-to-head test, but the magnitude of those wins varies dramatically by workload. The EPYC 9454 is a 48-core, 96-thread Zen 4 part with a 290W TDP, while the Ryzen 7 4800H is an 8-core, 16-thread Zen 2 mobile chip rated at 45W. The database records four shared benchmark results, and the EPYC 9454 wins all four, with deltas ranging from 74.9% to 87.9% in favor of the server part.

Head-to-Head Benchmarks

The most lopsided result comes from Cinebench R23 multi-core, where the EPYC 9454 scores 73,375 against the Ryzen 7 4800H's 11,135.5. That is an 84.8% advantage for the server chip, reflecting its six-fold core count and much higher sustained power envelope. The EPYC 9454's 48 cores and 96 threads simply overwhelm the 8-core, 16-thread mobile part in heavily threaded rendering workloads. This is the largest absolute gap in the shared test set, and it highlights how core count dominates when the workload scales across all available threads.

Single-core performance tells a different story in relative terms, but the EPYC 9454 still wins decisively. In Cinebench R23 single-core, the EPYC 9454 scores 10,358 versus 1,253.5 for the Ryzen 7 4800H, a 87.9% delta. The EPYC 9454's Zen 4 architecture, built on a 5 nm process, delivers substantially higher instructions per clock than the older Zen 2 design in the Ryzen 7 4800H, which uses a 7 nm node. Even at a lower boost clock of 3.80 GHz compared to the Ryzen's 4.20 GHz, the newer architecture wins single-threaded performance by a wide margin.

The Cinebench R15 results follow the same pattern. In multi-core, the EPYC 9454 posts 7,396 against 1,854 for the Ryzen 7 4800H, a 74.9% delta. That is the smallest percentage gap in the head-to-head set, but it still represents a nearly four-fold raw score advantage. In R15 single-core, the EPYC 9454 scores 1,044 versus 188 for the Ryzen 7 4800H, an 82% delta. The single-core gap here is slightly smaller than in R23, but the conclusion is unchanged: the EPYC 9454 is faster in every measured category.

It is importantly the Ryzen 7 4800H has no wins in the head-to-head set. The database records zero wins for the mobile chip and four for the EPYC 9454. That does not mean the Ryzen 7 4800H is without merit, but in these specific rendering benchmarks, it trails across the board. The average benchmark scores in the database tell a more nuanced story: the Ryzen 7 4800H averages 21,749 across all its recorded tests, while the EPYC 9454 averages 21,223. That puts the mobile chip 0.5% ahead in overall average, though the EPYC's nearest rival list includes different comparison points.

Where Each One Wins

The Ryzen 7 4800H wins where the EPYC 9454 is not tested, specifically in the broader benchmark suite. The database includes 22 benchmark entries for the Ryzen 7 4800H covering 3DMark, Geekbench, Passmark, and Cinebench workloads. In Passmark integer math, the Ryzen 7 4800H scores 63,999; in floating point math, it scores 37,312. Its Passmark multi-thread score is 18,222, and its single-thread score is 2,597. These are respectable numbers for a mobile processor, and the 75th percentile ranking among all CPUs in the database places it in the upper quarter of every recorded processor.

The EPYC 9454 has only six recorded benchmarks, all from Cinebench R15, R20, and R23. It does not appear in the Passmark or Geekbench tests that populate the Ryzen's record. This means the EPYC 9454's average benchmark score of 21,223 is computed from a smaller, more focused set of rendering workloads. The Ryzen's average of 21,749 benefits from a wider variety of tests, including memory-bound and integer-heavy operations where its 45W mobile design can compete more effectively.

For use-case planning, the Ryzen 7 4800H suits laptops and portable devices where power consumption and integrated graphics matter. It includes Radeon Graphics with 448 shader processors, which the EPYC 9454 lacks entirely. The mobile chip supports DDR4 and LPDDR4 memory in dual-channel configuration, with 51.2 GB/s bandwidth. That is sufficient for everyday computing, light content creation, and gaming on the move. The EPYC 9454, by contrast, is built for servers and workstations, with DDR5 support across twelve channels delivering 460.8 GB/s, nearly nine times the bandwidth of the mobile part.

The EPYC 9454 wins every workload that scales with core count or benefits from architectural efficiency. Its 48 cores and 96 threads make it a clear choice for virtualization, database serving, and multi-tenant cloud workloads. The 256 MB shared L3 cache, compared to the Ryzen's 8 MB, also helps in cache-sensitive server applications. The EPYC's ECC memory support is another server-critical feature that the Ryzen 7 4800H does not offer.

Architecture Differences

The Ryzen 7 4800H uses the Zen 2 architecture under the codename Renoir, fabricated on a 7 nm process at TSMC. It packs 9,800 million transistors into a 156 mm² die. The EPYC 9454 uses Zen 4 under the codename Genoa, built on a 5 nm process, also at TSMC, with 52,560 million transistors spread across eight 72 mm² chiplets. This chiplet design allows the EPYC to scale to 48 cores while keeping individual dies small and yield manageable.

Cache hierarchies differ substantially. The Ryzen 7 4800H has 64 KB of L1 per core, 512 KB of L2 per core, and 8 MB of shared L3. The EPYC 9454 also has 64 KB of L1 per core, but doubles the L2 to 1 MB per core, and offers 256 MB of shared L3. That 32-fold increase in L3 cache is one of the largest architectural gaps between the two parts, and it directly benefits workloads with large working sets like databases and in-memory analytics.

Memory support is another major divider. The Ryzen 7 4800H runs dual-channel DDR4 or LPDDR4 with 51.2 GB/s peak bandwidth and no ECC support. The EPYC 9454 runs twelve-channel DDR5 with 460.8 GB/s bandwidth and full ECC support. PCIe connectivity also differs: the Ryzen offers PCIe Gen 3, while the EPYC provides PCIe Gen 5 with 128 lanes available from the CPU alone. This makes the EPYC suited for high-bandwidth storage arrays, GPU clusters, and network interfaces that require many lanes.

The Ryzen 7 4800H integrates Radeon Graphics with 448 shader processors, making it a complete APU solution. The EPYC 9454 has no integrated graphics, requiring a discrete GPU or BMC for display output. The Ryzen uses the AMD Socket FP6, while the EPYC uses AMD Socket SP5, reflecting their different market segments. The Ryzen's TDP is 45W, while the EPYC is rated at 290W, a difference that explains the mobile chip's suitability for thin laptops and the server chip's need for robust cooling and power delivery.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 9454 has 48 cores and 96 threads, while the AMD Ryzen 7 4800H has 8 cores and 16 threads. The EPYC 9454 also has a lower base clock of 2.75 GHz compared to the Ryzen's 2.90 GHz, but the EPYC's boost clock is 3.80 GHz versus 4.20 GHz for the Ryzen.

Q: How much faster is the EPYC 9454 in multi-core rendering?

A: In Cinebench R23 multi-core, the EPYC 9454 scores 73,375 against 11,135.5 for the Ryzen 7 4800H, an 84.8% advantage. In Cinebench R15 multi-core, the EPYC scores 7,396 versus 1,854, a 74.9% delta.

Q: Does the Ryzen 7 4800H win any benchmark in the head-to-head set?

A: No. The database records zero wins for the Ryzen 7 4800H and four wins for the AMD EPYC 9454 across the shared Cinebench R15 and R23 tests. The Ryzen does not have a single recorded head-to-head victory.

Q: What memory types do these processors support?

A: The Ryzen 7 4800H supports DDR4 and LPDDR4 in dual-channel configuration with 51.2 GB/s bandwidth. The EPYC 9454 supports DDR5 in twelve-channel configuration with 460.8 GB/s bandwidth. ECC memory is supported only on the EPYC 9454.

Q: Do these processors have integrated graphics?

A: The Ryzen 7 4800H includes Radeon Graphics with 448 shader processors. The EPYC 9454 has no integrated graphics at all, consistent with its server-focused design.

Q: What process nodes are used?

A: The Ryzen 7 4800H uses a 7 nm process at TSMC, with 9,800 million transistors on a 156 mm² die. The EPYC 9454 uses a 5 nm process at TSMC, with 52,560 million transistors across eight 72 mm² chiplets.

Specification Differences

| Specification | AMD Ryzen 7 4800H | AMD EPYC 9454 |

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

| Series | 4000 series | EPYC 9004 series |

| Cores | 8 | 48 |

| Threads | 16 | 96 |

| Base Clock | 2.90 GHz | 2.75 GHz |

| Boost Clock | 4.20 GHz | 3.80 GHz |

| TDP | 45 W | 290 W |

| Socket | AMD Socket FP6 | AMD Socket SP5 |

| Architecture | Zen 2 | Zen 4 |

| Codename | Renoir | Genoa |

| Process Node | 7 nm | 5 nm |

| Transistors | 9,800 million | 52,560 million |

| Die Size | 156 mm² | 8x 72 mm² |

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

| L3 Cache | 8 MB (shared) | 256 MB (shared) |

| Memory Support | DDR4, LPDDR4 | DDR5 |

| Memory Bus | Dual-channel | Twelve-channel |

| Memory Bandwidth | 51.2 GB/s | 460.8 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3 | Gen 5, 128 Lanes (CPU only) |

| Integrated Graphics | Radeon Graphics 448SP | None |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2020-01-05 | 2022-11-09 |

| Launch MSRP | Not recorded | $5225 |

The Verdict

The AMD EPYC 9454 is the clear performance winner in every shared benchmark, with advantages of 74.9% to 87.9% over the Ryzen 7 4800H. Its 48 cores, 96 threads, 256 MB L3 cache, and DDR5 twelve-channel memory make it the only choice for server workloads that demand massive parallelism, high memory bandwidth, and ECC reliability. The 290W TDP and Socket SP5 platform are appropriate for datacenter environments where power and cooling are managed at the rack level.

The AMD Ryzen 7 4800H is not a competitive alternative to the EPYC 9454 in rendering or server tasks, but it serves a completely different purpose. Its 45W TDP, integrated Radeon Graphics, and support for DDR4/LPDDR4 make it suitable for mobile devices where battery life and portability take priority. The Ryzen's 75th percentile ranking among all CPUs in the database shows it performs well within its class, even if it cannot match a 48-core server chip.

For users choosing between these two, the decision comes down to the platform. If the workload is a laptop, the Ryzen 7 4800H is the only viable option. If the workload is a server or workstation requiring high core counts, ECC memory, and PCIe Gen 5 connectivity, the EPYC 9454 is the appropriate part. The data does not support any scenario where the Ryzen 7 4800H outperforms the EPYC 9454, but it also does not suggest the EPYC can replace the Ryzen's role in mobile computing. Each processor wins where it is designed to be used.