AMD EPYC 9454P vs AMD Ryzen 5 8500G Comparison

The AMD Ryzen 5 8500G and the AMD EPYC 9454P are both Zen 4 processors, yet they serve entirely different corners of the market. The data shows that while their average benchmark scores are nearly identical—20425 for the 8500G and 20422 for the EPYC—their architectural layouts and performance profiles diverge sharply. This analysis breaks down the benchmark results, architectural differences, and specification gaps between these two CPUs.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen 5 8500G has an average benchmark score of 20425, while the AMD EPYC 9454P scores 20422. The difference is a rounding error, with the nearestRivals data showing a deltaPct of 0 between them.

Q: How do the two compare in single-threaded performance?

A: The Ryzen 5 8500G wins the Geekbench single-core test with a score of 2354 against the EPYC's 2011, giving the Ryzen a 17.1% advantage. However, in Cinebench R23 single-core, the EPYC 9454P dominates with a score of 11504 versus 2593, a 77.5% lead.

Q: Which chip has more cores and threads?

A: The EPYC 9454P features 48 cores and 96 threads, while the Ryzen 5 8500G has 6 cores and 12 threads. The EPYC has eight times the core count and eight times the thread count.

Q: What are the memory channel configurations?

A: The Ryzen 5 8500G supports dual-channel DDR5 memory with 83.2 GB/s bandwidth. The EPYC 9454P supports twelve-channel DDR5 memory, delivering 460.8 GB/s bandwidth—over five times the bandwidth.

Q: Do both processors support ECC memory?

A: Yes, both the Ryzen 5 8500G and the EPYC 9454P have ECC memory support enabled.

Q: What is the production status and release timeline?

A: Both processors are marked as Active in production. The Ryzen 5 8500G was released on 2024-01-07, while the EPYC 9454P launched earlier on 2022-11-09.

Architecture Differences

The Ryzen 5 8500G is built on the Zen 4 architecture with the codename Phoenix2, manufactured on a 4 nm process by TSMC. It packs 20,900 million transistors into a die size of 137 mm². The EPYC 9454P also uses Zen 4 but with the codename Genoa, fabricated on a 5 nm process by TSMC. Its transistor count reaches 52,560 million, spread across a multi-die design of 8x 72 mm². The process node difference is notable: the 8500G uses the smaller 4 nm node, while the EPYC uses 5 nm.

Cache hierarchies differ significantly. Both chips allocate 64 KB of L1 cache per core and 1 MB of L2 per core. The shared L3 cache, however, tells a different story: the Ryzen 5 8500G has 16 MB of shared L3, while the EPYC 9454P boasts 256 MB of shared L3—a 16-fold increase. This massive L3 allocation on the EPYC supports its 48-core configuration, whereas the Ryzen's smaller cache suits its 6-core design.

The memory subsystems are worlds apart. The 8500G uses a dual-channel DDR5 bus with 83.2 GB/s bandwidth, while the EPYC 9454P uses a twelve-channel DDR5 bus with 460.8 GB/s. PCIe support also differs: the Ryzen offers Gen 4 with 14 lanes, while the EPYC provides Gen 5 with 128 lanes. The Ryzen includes integrated Radeon 740M graphics, whereas the EPYC has no integrated GPU. The market segments reflect this: the Ryzen is classified as Mobile, the EPYC as Server/Workstation.

Head-to-Head Benchmarks

The head-to-head data reveals a lopsided contest. Out of eight benchmark comparisons, the EPYC 9454P wins seven, while the Ryzen 5 8500G wins only one. The margin of victory for the EPYC is substantial in most tests.

In Cinebench R23 multicore, the EPYC scores 81492 against the Ryzen's 18368, a 77.5% difference. The same deltaPct of 77.5% appears across all Cinebench R15, R20, and R23 tests, both multicore and single-core. For example, in Cinebench R20 multicore, the EPYC hits 34226 while the Ryzen manages 7714. Even in single-core Cinebench R15, where the Ryzen should theoretically compete, the EPYC scores 1159 versus 261. This consistent 77.5% delta across every Cinebench test is striking—it suggests the EPYC's performance advantage is uniform regardless of thread count in this benchmark suite.

The Geekbench results tell a more nuanced story. In Geekbench multicore, the EPYC wins with 19941 against the Ryzen's 9444, a 52.6% difference. However, in Geekbench single-core, the Ryzen 5 8500G takes the win with 2354 versus 2011, a 17.1% advantage. This single victory highlights the Ryzen's strength in lightly threaded workloads, likely due to its higher boost clock of 5.00 GHz compared to the EPYC's 3.80 GHz.

The benchmark data shows a clear pattern: the EPYC 9454P is the undisputed champion in multi-threaded and heavily threaded scenarios, while the Ryzen 5 8500G holds a narrow edge in one specific single-threaded test. The 3DMark and Passmark results for the Ryzen, which are not available for the EPYC in this dataset, further illustrate its broader benchmark coverage—including scores like 5213 in 3DMark max threads and 21610 in Passmark multithread.

The Verdict

The data points to two different buyers. The AMD Ryzen 5 8500G is the processor for users who need a compact, mobile-oriented chip with integrated graphics and strong single-threaded performance in Geekbench. Its 6 cores and 12 threads, paired with a 5.00 GHz boost clock, make it suitable for everyday tasks and light workloads. The 17.1% Geekbench single-core win over the EPYC demonstrates its capability in scenarios that rely on per-core speed.

The AMD EPYC 9454P is the clear choice for server and workstation environments where multi-threaded throughput is paramount. Its 48 cores and 96 threads, combined with 256 MB of L3 cache and twelve-channel memory, deliver overwhelming leads in every Cinebench test—all showing a 77.5% advantage over the Ryzen. The 52.6% Geekbench multicore win reinforces this dominance. The EPYC's 460.8 GB/s memory bandwidth and Gen 5 PCIe support further cement its position for data-intensive workloads.

The nearestRivals data shows that both processors sit at the 74th percentile among all CPUs, with average scores within 0.2% of each other. This parity in aggregate scoring masks the divergent performance profiles. The Ryzen 5 8500G's 74th percentile ranking comes from a broad set of benchmarks including 3DMark and Passmark tests, while the EPYC's ranking is based on a narrower set of Cinebench and Geekbench results. The verdict is straightforward: buy the Ryzen for its integrated graphics and single-threaded edge; buy the EPYC for massive parallel processing power.

Specification Differences

The two processors differ in nearly every specification category. The Ryzen 5 8500G has 6 cores and 12 threads, while the EPYC 9454P has 48 cores and 96 threads. Base clocks are 3.50 GHz for the Ryzen and 2.75 GHz for the EPYC, with boost clocks of 5.00 GHz and 3.80 GHz respectively. TDP ratings are 65 W for the Ryzen versus 290 W for the EPYC.

Sockets differ: the Ryzen uses AMD Socket AM5, the EPYC uses AMD Socket SP5. The process nodes are 4 nm for the Ryzen and 5 nm for the EPYC. Transistor counts are 20,900 million versus 52,560 million, and die sizes are 137 mm² versus 8x 72 mm². L3 cache is 16 MB shared on the Ryzen versus 256 MB shared on the EPYC.

Memory bandwidth shows a major gap: 83.2 GB/s for the Ryzen versus 460.8 GB/s for the EPYC. PCIe support is Gen 4 with 14 lanes on the Ryzen, Gen 5 with 128 lanes on the EPYC. The Ryzen includes integrated Radeon 740M graphics; the EPYC has none. Market segments are Mobile for the Ryzen and Server/Workstation for the EPYC. The Ryzen has a launch MSRP of $179, while the EPYC has a launch MSRP of $4598.