AMD EPYC 9254 vs AMD Ryzen 3 8440U Comparison

Head-to-Head Benchmarks

The benchmark comparison between the AMD EPYC 9254 and the AMD Ryzen 3 8440U is decisively one-sided. Across all six recorded Cinebench tests, the EPYC 9254 claims victory, with the Ryzen 3 8440U failing to win a single benchmark. The margins are substantial, reflecting the fundamental difference in positioning between a server/workstation processor and a mobile chip.

In Cinebench R15, the EPYC 9254 scores 5,490 points in multi-core testing, while the Ryzen 3 8440U manages only 1,097 points. This represents a 400.5% advantage for the EPYC part. The single-core test tells a similar story: the EPYC scores 774, the Ryzen scores 154, a 402.6% gap. These are not incremental differences; they are order-of-magnitude leaps that separate a 24-core server part from a 4-core mobile part.

Moving to Cinebench R20, the pattern holds. The EPYC 9254 posts 22,878 in multi-core, versus 4,571 for the Ryzen 3 8440U, again a 400.5% delta. In single-core, 3,229 versus 645 yields a 400.6% difference. The consistency of these percentages across tests is striking: the EPYC 9254 is essentially five times faster in every Cinebench workload measured.

Cinebench R23 confirms the trend. Multi-core scores show 54,473 for the EPYC against 10,884 for the Ryzen, a 400.5% margin. Single-core results are 7,690 versus 1,536, a 400.7% gap. The near-identical delta percentages across all six tests suggest that the performance ratio is dictated by architectural scaling rather than workload-specific behavior. The EPYC's advantage is uniform and predictable.

When interpreting these numbers, context from the database matters. The EPYC 9254 sits at the 69th percentile among all CPUs, with an average benchmark score of 15,756. Its nearest rivals include the Intel Core i5-11400H at 15,749 (0% delta) and the AMD EPYC 9354P at 15,826 (-0.4% delta). The Ryzen 3 8440U, despite losing every head-to-head, occupies the 70th percentile with an average score of 16,663, placing it slightly higher in the overall distribution. Its nearest competitors are the Intel Core Ultra 5 115U at 16,753 (-0.5%), the Intel Core i5-1235U at 16,770 (-0.6%), and the AMD Ryzen 3 7335U at 16,827 (-1%).

The apparent paradox, where the Ryzen has a higher average score but loses every benchmark, resolves when you consider that the EPYC's average is pulled down by its lower single-core scores relative to its multi-core strength, while the Ryzen's average benefits from additional PassMark tests in its benchmark suite that the EPYC does not record. The data available for direct comparison is exclusively Cinebench, and there the EPYC is dominant.

FAQ

Q: How much faster is the AMD EPYC 9254 in multi-core Cinebench R23?

A: The EPYC 9254 scores 54,473 points, while the Ryzen 3 8440U scores 10,884 points, giving the EPYC a 400.5% advantage in that specific test.

Q: Does the Ryzen 3 8440U win any benchmark against the EPYC 9254?

A: No. Out of the six recorded head-to-head Cinebench benchmarks, the EPYC 9254 wins all six with delta percentages between 400.5% and 400.7%.

Q: What is the single-core performance difference in Cinebench R20?

A: The EPYC 9254 scores 3,229 points, and the Ryzen 3 8440U scores 645 points, a 400.6% gap in favor of the EPYC.

Q: How do these chips compare in overall database percentile ranking?

A: The EPYC 9254 ranks at the 69th percentile among all CPUs with an average benchmark score of 15,756. The Ryzen 3 8440U ranks at the 70th percentile with an average score of 16,663.

Q: What are the closest rivals to each chip based on average benchmark score?

A: For the EPYC 9254, the nearest rival is the Intel Core i5-11400H at 15,749 (0% delta). For the Ryzen 3 8440U, the nearest rival is the Intel Core Ultra 5 115U at 16,753 (-0.5% delta).

Q: Is the Ryzen 3 8440U's average benchmark score higher than the EPYC 9254's?

A: Yes, the Ryzen 3 8440U averages 16,663 versus 15,756 for the EPYC 9254, despite losing all direct Cinebench comparisons. This reflects the different benchmark suites recorded for each chip.

Architecture Differences

The two processors share a common Zen 4 architecture lineage, but they diverge dramatically in implementation. The EPYC 9254, codenamed Genoa, belongs to the EPYC 9004 series and is built on a 5 nm process at TSMC. The Ryzen 3 8440U, codenamed Hawk Point, is part of the 8000 series and uses a 4 nm process, also from TSMC. Both are Zen 4 designs, but the manufacturing node differs.

The physical scale of the chips is markedly different. The EPYC 9254 packs 26,280 million transistors across a die size of 4x 72 mm², indicating a multi-die configuration. The Ryzen 3 8440U contains 20,900 million transistors on a single 137 mm² die. Despite having fewer transistors, the Ryzen's monolithic die is larger than any single EPYC die, reflecting the different integration strategies: the EPYC uses chiplet-based scaling, while the Ryzen integrates everything onto one piece of silicon.

Cache hierarchies reflect the divergent purposes. The EPYC 9254 offers 64 KB of L1 per core, 1 MB of L2 per core, and 128 MB of shared L3 cache. The Ryzen 3 8440U matches the per-core L1 and L2 sizes but provides only 8 MB of shared L3. The EPYC's 16-fold advantage in L3 capacity is a direct consequence of its server role, where large working sets and high core counts demand substantial cache.

Memory architecture separates the chips further. The EPYC 9254 supports DDR5 across a twelve-channel memory bus, yielding 460.8 GB/s of bandwidth and full ECC support. The Ryzen 3 8440U also supports DDR5 but through a dual-channel bus, delivering 89.6 GB/s and no ECC capability. The EPYC offers more than five times the memory bandwidth, essential for server workloads that saturate memory subsystems.

PCIe connectivity shows a similar gap. The EPYC 9254 provides Gen 5 with 128 lanes (CPU only), while the Ryzen 3 8440U provides Gen 4 with 14 lanes. This is an order-of-magnitude difference in both generation and lane count, positioning the EPYC for multi-GPU and high-speed storage arrays, while the Ryzen targets integrated mobile systems.

The Ryzen 3 8440U includes integrated graphics in the form of Radeon 740M. The EPYC 9254 has no integrated graphics, consistent with server processors that rely on discrete GPUs or headless operation.

Specification Differences

The core and thread counts are the most obvious differentiators. The EPYC 9254 has 24 cores and 48 threads, while the Ryzen 3 8440U has 4 cores and 8 threads. This 6x core advantage and 6x thread advantage defines the multi-core performance gap.

Clock speeds tell a nuanced story. The EPYC 9254 has a base clock of 2.90 GHz and a boost clock of 4.15 GHz. The Ryzen 3 8440U has a base clock of 3.00 GHz and a boost clock of 4.70 GHz. The Ryzen runs at higher frequencies in both metrics, yet still loses single-core tests by roughly 5x, indicating that the benchmark deltas are not explained by clocks alone.

Thermal design power differs by a factor of more than seven. The EPYC 9254 has a TDP of 200 watts, while the Ryzen 3 8440U is rated at 28 watts. This power envelope disparity is the primary enabler of the EPYC's performance but also limits it to server platforms.

Socket types are incompatible. The EPYC 9254 uses AMD Socket SP5, designed for dual-socket or single-socket server boards. The Ryzen 3 8440U uses AMD Socket FP7, a mobile socket for laptops and compact systems.

Release dates are separated by just over a year. The EPYC 9254 launched on November 9, 2022, while the Ryzen 3 8440U arrived on December 5, 2023. The EPYC carries a launch MSRP of $2299; the Ryzen 3 8440U has no recorded launch MSRP.

Market segments are explicitly different: Server/Workstation for the EPYC, Mobile for the Ryzen. Both are active in production status, and neither has an unlocked multiplier. The part numbers differ, with the EPYC listed as 100-100000480 and the Ryzen having two variants: 100-000001325 (FP7r2) and 100-000001332 (FP7).

The Verdict

The data offers no ambiguity. The AMD EPYC 9254 is the performance winner in every measured Cinebench benchmark, with advantages consistently around 400% across multi-core and single-core tests. Any workload that relies on CPU rendering, simulation, or compilation will see roughly five times the throughput on the EPYC.

However, the Ryzen 3 8440U is not without justification. Its higher percentile ranking (70th versus 69th) and higher average benchmark score (16,663 versus 15,756) indicate that, across a broader benchmark suite, it holds its own against a wider field. The PassMark results recorded for the Ryzen, including data compression at 146,273, floating point math at 23,017, and integer math at 37,468, show strong per-core efficiency that cannot be captured in Cinebench alone.

The choice between these processors is dictated by platform requirements. The EPYC 9254 demands a server motherboard with Socket SP5, twelve-channel memory, and 200 watts of cooling capacity. The Ryzen 3 8440U fits into a mobile chassis with Socket FP7, dual-channel memory, and 28 watts of power. These are not competing products; they inhabit different ecosystems entirely.

For a buyer assembling a server or workstation, the EPYC 9254's 24 cores, 128 MB of L3 cache, and 460.8 GB/s memory bandwidth make it the clear choice from this comparison. For a buyer selecting a mobile processor, the Ryzen 3 8440U offers integrated graphics and a 4.70 GHz boost clock within a 28-watt envelope, features the EPYC cannot provide.

Where Each One Wins

The EPYC 9254 wins in all directly comparable workloads. Its Cinebench R15, R20, and R23 scores, both multi-core and single-core, exceed the Ryzen 3 8440U by approximately 400%. Any application that scales with core count, such as video rendering, 3D animation, or scientific computing, will favor the EPYC. Its 128 MB of L3 cache and twelve-channel memory bandwidth support large datasets and high concurrency. The 128 PCIe Gen 5 lanes enable expansive I/O configurations that the Ryzen's 14 Gen 4 lanes cannot approach.

The Ryzen 3 8440U wins in scenarios the EPYC cannot serve. Its 28-watt TDP makes it suitable for laptops and compact devices where 200 watts is infeasible. Its integrated Radeon 740M graphics provide display output without a discrete GPU, a capability entirely absent from the EPYC. Its 4.70 GHz boost clock offers responsiveness for lightly threaded tasks, though the benchmark data shows the EPYC still outperforms it in single-core Cinebench despite lower clock speeds.

The Ryzen's PassMark results highlight strengths in specific instruction-level tasks. Data compression scores 146,273, and extended instructions score 11,059. These figures, combined with its higher average benchmark score, suggest that for typical consumer workloads like web browsing, office applications, and media playback, the Ryzen 3 8440U delivers adequate performance with far lower power consumption.

The EPYC 9254's nearest rivals in the database are other server-class parts: the AMD EPYC 9354P at 15,826 (-0.4%) and the AMD EPYC 75F3 at 15,859 (-0.6%). The Ryzen 3 8440U's rivals are mobile and low-power desktop chips: the Intel Core Ultra 5 115U at 16,753 (-0.5%), the Intel Core i5-1235U at 16,770 (-0.6%), and the AMD Ryzen 3 7335U at 16,827 (-1%). These groupings reinforce the conclusion that each chip competes in its own weight class, and the head-to-head numbers, while lopsided, represent a comparison across distinct market tiers.