AMD EPYC 9554 vs AMD Ryzen AI 7 445 Comparison

The AMD Ryzen AI 7 445 and AMD EPYC 9554 represent opposite ends of the AMD spectrum: a 28-watt mobile processor designed for thin-and-light laptops versus a 360-watt server behemoth for data centers. Benchmark results confirm a total mismatch in raw compute, yet the data also reveals why both chips hold the same 79th percentile ranking among all CPUs. The head-to-head comparison is lopsided, but the story lies in the architectural intent behind each design.

Head-to-Head Benchmarks

The EPYC 9554 dominates every shared benchmark by a massive margin. In Cinebench R23 multi-core, the EPYC scores 92,457 against the Ryzen AI 7 445’s 10,590, a delta of -88.5% for the mobile chip. This is the largest gap in the comparison, reflecting the EPYC’s 64 cores and 128 threads versus the Ryzen’s 6 cores and 12 threads. The EPYC’s advantage in Cinebench R15 multi-core is similarly decisive: 9,319 versus 1,723, an 81.5% deficit for the Ryzen.

Single-core results tell a slightly different story, though the EPYC still wins outright. In Cinebench R23 single-core, the EPYC scores 13,052 against the Ryzen’s 1,806, a -86.2% delta. The R15 single-core test shows 1,315 versus 254, an -80.7% gap. These single-core deltas are narrower than the multi-core gaps, indicating that the Ryzen’s Zen 5 architecture narrows the per-thread deficit against the EPYC’s Zen 4 cores, but the EPYC’s higher 3.75 GHz boost clock and server-grade design still prevail.

Notably, the EPYC wins all four shared benchmarks, giving it a 4-0 sweep in the head-to-head. The Ryzen AI 7 445 has zero wins in this direct comparison. However, the average benchmark scores from their respective nearestRivals lists show both chips clustered around 26,700-27,000, meaning the Ryzen’s unshared benchmark results (PassMark tests) compensate for its Cinebench losses. The EPYC’s avgBenchmarkScore is 26,743, while the Ryzen’s is 26,936 — a mere 0.7% difference despite the colossal multi-core disparity.

Where Each One Wins

The EPYC 9554 wins in every scenario involving sustained multi-threaded throughput. Its 64 cores and 128 threads, combined with 256 MB of shared L3 cache and twelve-channel DDR5 memory delivering 460.8 GB/s, make it the clear choice for heavy server workloads like virtualization, database processing, and scientific computing. The Cinebench R23 multi-core score of 92,457 is more than eight times the Ryzen’s 10,590, indicating that any parallel workload will see order-of-magnitude improvements on the EPYC.

The Ryzen AI 7 445 wins in scenarios where power efficiency and mobility matter more than raw core count. Its 28-watt TDP versus the EPYC’s 360-watt TDP means the Ryzen can operate in fanless or low-power laptop designs, whereas the EPYC requires a server chassis with substantial cooling. The Ryzen’s integrated Radeon 840M graphics provide display output and basic GPU acceleration, a feature the EPYC lacks entirely. For mobile productivity, the Ryzen’s PassMark single-thread score of 3,591 (though not directly compared to the EPYC) suggests competitive responsiveness for everyday tasks.

The EPYC’s 128 PCIe Gen 5 lanes enable massive I/O expansion for storage arrays and network cards, while the Ryzen’s 14 Gen 4 lanes suffice for a laptop’s SSD and GPU. The EPYC also supports twelve-channel memory, quadrupling the Ryzen’s dual-channel bandwidth (460.8 GB/s versus 89.6 GB/s), which is critical for memory-bound server applications. Both chips support ECC memory, but the EPYC’s server platform is designed for 24/7 reliability, while the Ryzen targets consumer mobility.

Architecture Differences

The Ryzen AI 7 445 uses the Zen 5 architecture on TSMC’s 4 nm process node, codenamed Gorgon Point. It features 6 cores and 12 threads with a base clock of 2.00 GHz and boost clock of 4.60 GHz. Its cache hierarchy includes 80 KB of L1 per core, 1 MB of L2 per core, and a modest 4 MB of L3 cache. The chip supports DDR5 and LPDDR5X memory over a dual-channel bus, and its socket is AMD FP8, indicating a soldered mobile design.

The EPYC 9554 belongs to the EPYC 9004 series, using the Zen 4 architecture on TSMC’s 5 nm process, codenamed Genoa. It packs 64 cores and 128 threads with a base clock of 3.10 GHz and boost clock of 3.75 GHz. The EPYC’s cache is vastly larger: 64 KB L1 per core, 1 MB L2 per core, and a shared 256 MB L3. The die size is 8x 72 mm², with 52,560 million transistors. Memory support is DDR5 over a twelve-channel bus, and the socket is SP5 for server platforms.

The process node difference is notable: the Ryzen uses a newer 4 nm process versus the EPYC’s 5 nm, giving the mobile chip a density and efficiency advantage. However, the EPYC compensates with a far larger transistor budget and physical die area. The Ryzen’s Zen 5 architecture is newer than the EPYC’s Zen 4, which explains why the Ryzen’s single-core Cinebench R23 score of 1,806, while lower in absolute terms, comes from a chip with fewer than one-tenth the cores. The EPYC’s 3.75 GHz boost clock is lower than the Ryzen’s 4.60 GHz, yet the EPYC still wins single-core tests due to its server-grade memory subsystem and higher power envelope.

The Ryzen integrates Radeon 840M graphics, while the EPYC has no integrated GPU, relying on discrete accelerators in server deployments. The EPYC supports PCIe Gen 5 with 128 lanes, compared to the Ryzen’s Gen 4 with 14 lanes. Both chips have locked multipliers, meaning no overclocking, but the EPYC’s server platform offers extensive RAS features not present in the mobile part.

The Verdict

The data is unambiguous: the AMD EPYC 9554 is the superior processor for multi-threaded compute. Its Cinebench R23 multi-core score of 92,457 is 88.5% higher than the Ryzen AI 7 445’s 10,590, and it wins all four direct head-to-head benchmarks. Any workload that scales across cores — rendering, simulation, cloud hosting — will favor the EPYC overwhelmingly. The EPYC’s 64 cores, 256 MB L3 cache, and 460.8 GB/s memory bandwidth provide a platform designed for maximum throughput, not efficiency.

The Ryzen AI 7 445 is the appropriate choice for mobile computing where the EPYC physically cannot operate. Its 28-watt TDP and integrated graphics make it suitable for laptops, while the EPYC’s 360-watt TDP requires a rack-mounted server. The Ryzen’s newer Zen 5 architecture and 4 nm process give it a per-watt performance advantage, and its 4.60 GHz boost clock ensures snappy single-threaded response for everyday tasks. The Ryzen’s PassMark single-thread score of 3,591 and multithread score of 18,115, while not directly comparable to the EPYC’s Cinebench results, indicate a capable mobile processor.

For buyers: the EPYC is for data centers and high-performance computing, priced at a launch MSRP of $9087. The Ryzen is for ultraportable laptops, with no launch MSRP listed. The two chips serve non-overlapping markets, so the verdict depends entirely on the use case. If you need raw parallel processing, the EPYC is the only option. If you need a processor that fits in a laptop chassis, the Ryzen is the only option. The 0.7% difference in average benchmark scores between them (26,936 versus 26,743) is misleading, as it reflects different benchmark suites and workload profiles.

FAQ

Q: Which processor has more cores, and by how much?

A: The AMD EPYC 9554 has 64 cores and 128 threads, while the AMD Ryzen AI 7 445 has 6 cores and 12 threads. The EPYC has 58 more cores and 116 more threads.

Q: What is the largest performance gap in the head-to-head benchmarks?

A: The largest gap is in Cinebench R23 multi-core, where the EPYC 9554 scores 92,457 against the Ryzen AI 7 445’s 10,590, a delta of -88.5% for the Ryzen.

Q: Does the Ryzen AI 7 445 win any benchmark against the EPYC 9554?

A: No. The head-to-head results show the EPYC winning all four shared benchmarks (Cinebench R15 and R23, both single and multi-core), giving it a 4-0 sweep.

Q: What memory bandwidth does each processor support?

A: The EPYC 9554 supports 460.8 GB/s via twelve-channel DDR5, while the Ryzen AI 7 445 supports 89.6 GB/s via dual-channel DDR5 or LPDDR5X.

Q: Which processor has integrated graphics?

A: The Ryzen AI 7 445 includes Radeon 840M integrated graphics. The EPYC 9554 has no integrated graphics, as it targets server platforms with discrete accelerators.

Q: Both processors have the same percentile ranking. What does that mean?

A: Both the Ryzen AI 7 445 and EPYC 9554 rank in the 79th percentile among all CPUs. This indicates that despite the EPYC’s massive multi-core advantage, the Ryzen’s newer architecture and different benchmark suite produce a comparable average score (26,936 vs 26,743).