AMD EPYC 9354P vs AMD Ryzen 5 40 Comparison

The AMD Ryzen 5 40 and the AMD EPYC 9354P occupy opposite ends of the computing spectrum, and the benchmark data quantifies that gulf precisely. The Ryzen 5 40 is a 4-core, 8-thread mobile processor built on the Zen 2 architecture, while the EPYC 9354P is a 32-core, 64-thread server monster on Zen 4. Their average benchmark scores are surprisingly close—15,882 for the Ryzen versus 15,826 for the EPYC—but this aggregate figure masks a fundamental divergence in workload performance. The data shows a clear, one-sided rivalry where the EPYC dominates every shared test, yet the Ryzen holds its own in specific niche tasks that favor its architecture.

Head-to-Head Benchmarks

The head-to-head results are unambiguous: the AMD EPYC 9354P wins all four shared benchmark tests by massive margins. In Cinebench R23 multi-core, the EPYC scores 63,840 against the Ryzen’s 4,841, a delta of -92.4% for the Ryzen. This is the single largest gap in the comparison, and it reflects the 8x core advantage of the EPYC. The single-core story is equally decisive, with the EPYC posting 9,012 in Cinebench R23 single-core versus the Ryzen’s 1,150, a -87.2% delta. Even in the older Cinebench R15 tests, the pattern holds: the EPYC scores 6,434 multi-core and 908 single-core, while the Ryzen manages 790 and 165.5, respectively, translating to -87.7% and -81.8% deltas.

These numbers tell a simple story: the EPYC 9354P is between 4.4x and 13.2x faster than the Ryzen 5 40 across all shared benchmarks. The closest margin is in Cinebench R15 single-core, where the EPYC still leads by a factor of 5.5. This is not a competitive matchup; it is a demonstration of scale. The Ryzen’s average benchmark score of 15,882 is actually higher than the EPYC’s 15,826, but that is because the Ryzen has additional PassMark results that the EPYC lacks. When directly compared on identical tests, the EPYC is categorically superior. The deltaPct values in the nearestRivals list confirm this: the EPYC’s average score is -0.4% relative to the Ryzen, which is a statistical tie on the aggregate metric but irrelevant given the per-test dominance.

Where Each One Wins

The EPYC 9354P wins every head-to-head benchmark, making the "where each one wins" section one-sided. The EPYC’s victories span multi-core rendering, single-core performance, and everything in between. Its 32 cores and 64 threads deliver a Cinebench R23 multi-core score of 63,840, which is 13.2x the Ryzen’s 4,841. This makes the EPYC the clear choice for any workload that scales with core count, such as server virtualization, database processing, or heavy scientific computing. The EPYC also wins single-core tests, albeit by a smaller factor—7.8x in Cinebench R23 single-core—which indicates that its Zen 4 architecture provides a substantial per-core performance advantage over the Ryzen’s Zen 2 design.

The Ryzen 5 40 has no benchmark wins against the EPYC, but the data does show where it holds value in isolation. Its PassMark results are notable for a mobile chip: 31,598 in integer math, 15,194 in floating point math, and 141,533 in data compression. These are strong numbers for a 15W TDP processor, and they suggest that the Ryzen is well-suited for lightweight, power-constrained tasks like everyday productivity, media consumption, or as an embedded controller. Its 2,477 PassMark single-thread score indicates respectable responsiveness in single-threaded applications. However, against the EPYC, none of these strengths materialize as a win.

Architecture Differences

The architectural gap between these two processors is stark. The Ryzen 5 40 is built on TSMC’s 6 nm process with a 100 mm² die, while the EPYC 9354P uses TSMC’s 5 nm process with 52,560 million transistors across eight 72 mm² chiplets. The Ryzen’s Zen 2 architecture features 4 cores and 8 threads, with 64 KB of L1 cache per core, 512 KB of L2 per core, and 4 MB of shared L3 cache. The EPYC’s Zen 4 architecture packs 32 cores and 64 threads, with the same 64 KB L1 per core, a larger 1 MB L2 per core, and a massive 256 MB of shared L3 cache—64 times the Ryzen’s pool.

Memory subsystems further differentiate the pair. The Ryzen supports dual-channel LPDDR5 with 88.0 GB/s of bandwidth and no ECC, which is typical for a mobile part. The EPYC supports twelve-channel DDR5 with 460.8 GB/s of bandwidth and ECC, a necessity for server reliability. PCIe connectivity is equally divergent: the Ryzen offers Gen 3 with 4 lanes, while the EPYC provides Gen 5 with 128 lanes—a 32x increase in lane count and a generational leap in bandwidth. The Ryzen integrates a Radeon 610M GPU, whereas the EPYC has no integrated graphics, relying on discrete or virtualized solutions. Clock speeds also favor the EPYC: it has a 3.25 GHz base and 3.80 GHz boost, versus the Ryzen’s 2.80 GHz base and 4.30 GHz boost. The Ryzen’s higher boost clock is notable, but it cannot overcome the EPYC’s core count and architectural efficiency.

The process node difference (6 nm vs 5 nm) and the EPYC’s massive transistor count explain much of the performance gap. The EPYC also has a 280W TDP versus the Ryzen’s 15W, which underscores their intended roles: the EPYC is a server powerhouse, the Ryzen is a mobile efficiency part. Their sockets—SP5 for the EPYC and FT6 for the Ryzen—are incompatible, and their release dates are two-plus years apart, with the EPYC launching in November 2022 and the Ryzen in September 2025.

The Verdict

The data dictates a simple verdict: pick the EPYC 9354P for any performance-critical workload, and pick the Ryzen 5 40 only if power consumption and mobile form factor are absolute priorities. The EPYC wins all four head-to-head tests with deltas ranging from -81.8% to -92.4%, making it the superior processor in every measurable shared category. Its 63,840 Cinebench R23 multi-core score is 13.2x the Ryzen’s, and its single-core advantage of 7.8x in the same test shows that Zen 4’s per-core performance is far ahead of Zen 2. The EPYC’s 256 MB of L3 cache and 460.8 GB/s memory bandwidth are unmatched by the Ryzen’s 4 MB and 88.0 GB/s. For server workloads, ECC memory support, or PCIe Gen 5 connectivity, the EPYC is the only choice.

The Ryzen 5 40, however, is not without merit in its own segment. Its 15W TDP is a fraction of the EPYC’s 280W, making it suitable for fanless or battery-powered designs. Its 4.30 GHz boost clock is higher than the EPYC’s 3.80 GHz, which helps in lightly threaded tasks where the EPYC’s lower clock is a disadvantage. The Ryzen’s integrated Radeon 610M GPU eliminates the need for a discrete graphics card, and its PassMark scores—141,533 in data compression and 31,598 in integer math—show it is capable in real-world mobile scenarios. The Ryzen’s 70th percentile ranking among all CPUs, versus the EPYC’s 69th, is a statistical tie on the aggregate metric, but it is misleading; the EPYC’s benchmarks are more demanding, and its 15,826 average score is weighed down by the lack of low-end PassMark tests.

For a user building a server or workstation, the EPYC 9354P is the definitive answer. For a user needing a low-power mobile processor, the Ryzen 5 40 is the only viable option in this comparison. There is no middle ground.

FAQ

Q: Which processor has a higher multi-core performance?

A: The AMD EPYC 9354P decisively wins, scoring 63,840 in Cinebench R23 multi-core versus the Ryzen 5 40’s 4,841, a delta of -92.4% for the Ryzen.

Q: Is the Ryzen 5 40 faster in any benchmark?

A: No. The EPYC 9354P wins all four shared head-to-head tests: Cinebench R15 multi-core, R15 single-core, R23 multi-core, and R23 single-core.

Q: What is the core and thread count difference?

A: The Ryzen 5 40 has 4 cores and 8 threads, while the EPYC 9354P has 32 cores and 64 threads—an 8x core advantage for the EPYC.

Q: How do the cache sizes compare?

A: The Ryzen 5 40 has 64 KB L1 per core, 512 KB L2 per core, and 4 MB shared L3. The EPYC 9354P has 64 KB L1 per core, 1 MB L2 per core, and 256 MB shared L3.

Q: What memory types do they support?

A: The Ryzen 5 40 supports dual-channel LPDDR5 with 88.0 GB/s bandwidth and no ECC. The EPYC 9354P supports twelve-channel DDR5 with 460.8 GB/s bandwidth and ECC.

Q: What is the launch MSRP of the EPYC 9354P?

A: The AMD EPYC 9354P has a launch MSRP of $2730. The Ryzen 5 40 has no listed launch MSRP in the data.