AMD EPYC 9254 vs AMD Ryzen 5 4600H Comparison

Head-to-Head Benchmarks

The benchmark database records four direct head-to-head comparisons between the AMD Ryzen 5 4600H and the AMD EPYC 9254, and the results are decisively one-sided. The EPYC 9254 wins every single test, with margins that range from substantial to overwhelming.

In Cinebench R15 multi-core, the EPYC 9254 scores 5490 against the Ryzen 5 4600H's 1425. That is a 74% deficit for the mobile chip, meaning the EPYC delivers roughly four times the multi-threaded rendering throughput. The single-core result in the same benchmark is even more lopsided in relative terms: 774 for the EPYC versus 176 for the Ryzen, a 77.3% gap. The EPYC's per-core advantage is not merely a product of having more cores; it wins on an individual thread basis as well.

Moving to Cinebench R23, the pattern holds. The EPYC 9254 posts a multi-core score of 54473, while the Ryzen 5 4600H manages 8072. The delta is 85.2%, which means the EPYC outperforms the Ryzen by a factor of nearly 6.75 in this workload. The single-core R23 result shows 7690 for the EPYC versus 1142.5 for the Ryzen, a gap of 85.1%. This near-identical percentage in both R23 tests indicates that the EPYC's advantage scales almost perfectly across thread counts, a sign of consistent architectural efficiency rather than a workload-specific quirk.

The average benchmark score in the database tells a slightly different story, however. The Ryzen 5 4600H has an average score of 16341 across all recorded benchmarks, while the EPYC 9254 averages 15756. This discrepancy arises because the head-to-head tests are limited to Cinebench workloads, whereas the average includes a broader mix of tests such as 3DMark, Geekbench, and Passmark. In those other tests, the Ryzen's 3DMark results (4387 in 16 threads, 4355 in max threads) and Passmark multi-thread score of 14228 contribute to a higher overall average. The EPYC's available benchmark set is smaller, focused on Cinebench, which skews its average downward relative to the Ryzen.

In terms of database percentiles, the two chips land nearly side by side. The Ryzen 5 4600H sits at the 70th percentile among all CPUs, while the EPYC 9254 is at the 69th percentile. This near-tie in global ranking, despite the EPYC's dominance in Cinebench, reflects the different benchmark ecosystems each chip participates in. The Ryzen's nearest rival, the Intel Core i7-1260U, has an average score of 16320 with a 0.1% delta, while the EPYC 9254's closest competitor, the Intel Core i5-11400H, averages 15749 with a 0% delta.

FAQ

Q: Which processor wins in Cinebench R23 multi-core?

A: The AMD EPYC 9254 wins decisively with a score of 54473, which is 85.2% ahead of the AMD Ryzen 5 4600H's 8072.

Q: Is the single-core performance gap similar to the multi-core gap?

A: Yes. In Cinebench R23 single-core, the EPYC 9254 scores 7690 versus the Ryzen's 1142.5, a gap of 85.1%. In Cinebench R15 single-core, the EPYC leads by 77.3% (774 vs 176).

Q: How do the two processors compare in overall database average score?

A: The Ryzen 5 4600H has a higher average benchmark score of 16341, while the EPYC 9254 averages 15756. However, this is influenced by the different sets of tests each chip has been benchmarked with, as the EPYC's recorded tests are exclusively Cinebench workloads.

Q: What is the memory bandwidth difference between the two?

A: The EPYC 9254 supports twelve-channel DDR5 memory with a bandwidth of 460.8 GB/s. The Ryzen 5 4600H uses dual-channel DDR4 with a bandwidth of 51.2 GB/s, a difference of over nine times in theoretical peak bandwidth.

Q: Which processor has ECC memory support?

A: The EPYC 9254 supports ECC memory, while the Ryzen 5 4600H does not. This aligns with the EPYC's server/workstation positioning.

Q: How many PCIe lanes does each processor provide?

A: The EPYC 9254 offers Gen 5 with 128 lanes (CPU only). The Ryzen 5 4600H provides Gen 3, with the database not listing a specific lane count.

Architecture Differences

The two processors represent different generations and design philosophies from AMD. The Ryzen 5 4600H is built on Zen 2 architecture with the Renoir codename, fabricated on a 7 nm process at TSMC. The EPYC 9254 uses Zen 4 architecture with the Genoa codename, on a 5 nm process, also at TSMC. This process shrink is a significant factor in the EPYC's higher clock speeds and efficiency per core.

The transistor counts differ dramatically. The Ryzen 5 4600H contains 9,800 million transistors on a monolithic die of 156 mm². The EPYC 9254 integrates 26,280 million transistors across a chiplet design comprising 4x 72 mm² dies. This multi-die approach is typical of server processors, allowing for higher core counts and more cache.

Cache hierarchy differences are substantial. Both chips have 64 KB of L1 cache per core, but the L2 cache differs: the Ryzen has 512 KB per core, while the EPYC has 1 MB per core, doubling the per-core L2 capacity. The L3 cache is the most dramatic divergence: the Ryzen has 8 MB shared, while the EPYC has 128 MB shared, a 16-fold increase. This massive L3 pool is critical for server workloads that frequently access large datasets.

Memory architecture is another major split. The Ryzen 5 4600H supports DDR4 with a dual-channel bus, delivering 51.2 GB/s of bandwidth. The EPYC 9254 supports DDR5 with a twelve-channel bus, delivering 460.8 GB/s. The EPYC also supports ECC memory, which the Ryzen does not. PCIe connectivity differs as well: the Ryzen offers Gen 3, while the EPYC provides Gen 5 with 128 lanes.

The integrated graphics situation is opposite as well. The Ryzen 5 4600H includes Radeon RX Vega 6 integrated graphics, making it suitable for mobile systems without a discrete GPU. The EPYC 9254 has no integrated graphics, which is standard for server processors that rely on dedicated GPUs or headless operation.

Specification Differences

The core and thread counts are the most obvious specification gap. The Ryzen 5 4600H has 6 cores and 12 threads, while the EPYC 9254 has 24 cores and 48 threads. This quadrupling of cores and threads directly explains the multi-core benchmark dominance.

Clock speeds show a nuanced picture. The Ryzen 5 4600H has a base clock of 3.00 GHz and a boost clock of 4.00 GHz. The EPYC 9254 has a lower base clock of 2.90 GHz but a higher boost clock of 4.15 GHz. This means the EPYC can reach higher single-core frequencies when needed, while the Ryzen has a slightly higher base frequency.

Thermal design power differs enormously. The Ryzen 5 4600H has a TDP of 45 watts, positioned for mobile laptops. The EPYC 9254 has a TDP of 200 watts, reflecting its server-class power envelope. This four-fold difference in power budget enables the EPYC's higher core count and clock speeds.

The sockets are incompatible. The Ryzen 5 4600H uses AMD Socket FP6, while the EPYC 9254 uses AMD Socket SP5. This means no platform interchangeability between the two.

Release dates are separated by nearly three years. The Ryzen 5 4600H launched on January 5, 2020, while the EPYC 9254 launched on November 9, 2022. The EPYC's launch MSRP is $2299, though this should be considered in the context of its server positioning.

The production status for both is listed as Active. The market segments differ: the Ryzen is a Mobile processor, while the EPYC is categorized as Server/Workstation. Neither processor has an unlocked multiplier, and both have distinct part numbers: 100-000000100 for the Ryzen and 100-100000480 for the EPYC.

Where Each One Wins

The AMD EPYC 9254 wins in every head-to-head benchmark recorded in the database. Its strengths are clear: massive multi-core throughput, superior single-core performance, extensive cache, high memory bandwidth, and ECC support. In Cinebench R15 and R23, both single-core and multi-core, the EPYC leads by margins of 74% to 85.2%. This makes it the obvious choice for server workloads, virtualization, database processing, scientific computing, and any application that can utilize 24 cores and 48 threads. The 128 MB of L3 cache and 460.8 GB/s of memory bandwidth are tailor-made for data-intensive enterprise tasks. The Gen 5 PCIe support with 128 lanes allows for extensive expansion in server environments.

The AMD Ryzen 5 4600H, despite losing all head-to-head tests, has its own domain of strength. Its 45-watt TDP makes it suitable for thin-and-light laptops, where the integrated Radeon RX Vega 6 GPU eliminates the need for a separate graphics card in basic use cases. The database shows it holds a higher average benchmark score (16341) than the EPYC (15756), driven by its performance in 3DMark tests (4387 in 16 threads) and Passmark workloads (14228 multi-thread, 26909 floating point math). These results indicate that in mixed workloads, including gaming and general productivity, the Ryzen's efficiency and integrated graphics provide a balanced experience that the EPYC cannot match due to its lack of iGPU and server-focused design.

The Ryzen's 70th percentile ranking versus the EPYC's 69th percentile underscores that in the broader CPU landscape, the mobile chip holds its own for its intended market. Its 7 nm process and 45-watt envelope allow it to deliver competitive performance in a power-constrained form factor. For users needing a portable system with decent multi-threading (12 threads) and the convenience of integrated graphics, the Ryzen 5 4600H is the practical choice.

The EPYC 9254 is not a suitable replacement for the Ryzen in a laptop, and the Ryzen cannot handle server workloads. These are complementary products for entirely different use cases. The benchmark data reflects this: the EPYC's wins are absolute in compute-heavy rendering tests, while the Ryzen's advantages lie in its lower power draw, integrated graphics, and a benchmark portfolio that includes 3DMark and Passmark tests where it posts respectable numbers. The database shows a clear split: the EPYC for raw compute density, the Ryzen for mobile versatility.