AMD EPYC 9474F vs AMD Ryzen 9 5900HX Comparison

The AMD Ryzen 9 5900HX and AMD EPYC 9474F represent two vastly different extremes of AMD’s processor lineup. The former is a high-end mobile chip from the 5000 series, built for laptops with a focus on power efficiency, while the latter is a flagship server processor from the EPYC 9004 series, designed for heavy datacenter workloads. Benchmark data shows a decisive performance gap, but the two parts are engineered for entirely different tasks and market segments.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 9474F has 48 cores and 96 threads, which is six times the core count and six times the thread count of the AMD Ryzen 9 5900HX, which features 8 cores and 16 threads.

Q: How do their single-threaded benchmark scores compare?

A: The EPYC 9474F is significantly faster. In Cinebench R23 single-core, the EPYC scores 12252 compared to the Ryzen’s 1488, a delta of -87.9% for the Ryzen. The EPYC also leads in Cinebench R15 single-core with 1234 versus 240.

Q: What is the difference in their memory architectures?

A: The Ryzen 9 5900HX supports dual-channel DDR4 memory with a bandwidth of 68.3 GB/s and no ECC support. The EPYC 9474F uses twelve-channel DDR5 memory with a much higher bandwidth of 460.8 GB/s and supports ECC memory.

Q: Are these processors from the same architecture generation?

A: No. The Ryzen 9 5900HX is based on the Zen 3 architecture (codenamed Cezanne) on a 7 nm process. The EPYC 9474F uses the newer Zen 4 architecture (codenamed Genoa) on a 5 nm process.

Q: Which processor has integrated graphics?

A: Only the AMD Ryzen 9 5900HX has integrated graphics, featuring a Radeon Vega 8 GPU. The AMD EPYC 9474F has no integrated graphics.

Q: What is the difference in their market segments?

A: The Ryzen 9 5900HX is designed for the Mobile market segment, targeting high-performance laptops. The EPYC 9474F is aimed at the Server/Workstation market segment, built for enterprise and cloud computing environments.

Where Each One Wins

The AMD EPYC 9474F wins every single benchmark comparison in the head-to-head data. Its dominance is absolute across all tested workloads, from single-threaded tasks to heavily multithreaded ones. In Cinebench R23 multi-core, the EPYC scores 86790 against the Ryzen’s 12845, a massive 85.2% advantage. This makes the EPYC the clear choice for any server-side, data-intensive, or render-farm application where raw throughput is paramount.

The Ryzen 9 5900HX has no benchmark victories to claim in this comparison. However, its design parameters point to a different kind of win: portability and power efficiency. With a TDP of 45 watts compared to the EPYC’s 360 watts, the Ryzen is built to operate within the thermal and power constraints of a laptop chassis. Its integrated Radeon Vega 8 graphics also gives it a functional advantage in systems where a discrete GPU is not present, which is a capability the EPYC completely lacks. For a mobile user, the Ryzen is the only viable option; for a datacenter, the EPYC is the overwhelming performance leader.

Architecture Differences

The two processors are built on entirely different architectural foundations. The Ryzen 9 5900HX is based on Zen 3, with the codename Cezanne, and is manufactured on a 7 nm process by TSMC. The EPYC 9474F employs the newer Zen 4 architecture, codenamed Genoa, built on a more advanced 5 nm process, also by TSMC. This process node advantage contributes to the EPYC’s higher clock speeds and efficiency at scale.

The cache hierarchies diverge significantly. Both have a 64 KB L1 cache per core, but the Ryzen has 512 KB of L2 per core while the EPYC doubles that to 1 MB per core. The L3 cache is a major differentiator: the Ryzen has 16 MB shared, whereas the EPYC has a massive 256 MB shared L3 cache. This 16x difference in L3 capacity is critical for server workloads that rely on large datasets being resident on-chip.

Memory support is another stark contrast. The Ryzen 9 5900HX uses DDR4 memory with a dual-channel bus, delivering 68.3 GB/s of bandwidth without ECC support. The EPYC 9474F uses DDR5 memory with a twelve-channel bus, providing a theoretical bandwidth of 460.8 GB/s, and it supports ECC memory. The EPYC also features PCIe Gen 5 with 128 lanes (CPU only), while the Ryzen is limited to PCIe Gen 3. These differences underscore the EPYC’s role as a data-heavy server part versus the Ryzen’s consumer mobile focus.

Specification Differences

The core specifications highlight the distinct purposes of these processors. The Ryzen 9 5900HX has 8 cores and 16 threads, with a base clock of 3.30 GHz and a boost clock of 4.60 GHz. The EPYC 9474F has 48 cores and 96 threads, with a base clock of 3.60 GHz and a boost clock of 4.10 GHz. While the EPYC has a higher base clock, the Ryzen has a higher boost clock, which is typical for a mobile part designed to maximize single-thread responsiveness when power is available.

The TDP figures are in different leagues: the Ryzen is rated at 45 watts, while the EPYC is rated at 360 watts. This reflects the cooling and power delivery capabilities of their respective platforms. The Ryzen uses the AMD Socket FP6, while the EPYC uses the AMD Socket SP5. The Ryzen’s memory support is DDR4 with a dual-channel bus, while the EPYC supports DDR5 with a twelve-channel bus, as previously mentioned. The Ryzen has an unlocked multiplier, whereas the EPYC does not. The Ryzen also features integrated Radeon Vega 8 graphics, while the EPYC has no integrated graphics. Finally, the EPYC has a launch MSRP of $6780, while the Ryzen has no listed launch MSRP.

Head-to-Head Benchmarks

The benchmark results are unambiguous in their hierarchy. In Cinebench R23 multi-core, the EPYC 9474F scores 86790, which is a staggering 85.2% higher than the Ryzen 9 5900HX’s score of 12845. This is the largest delta in the head-to-head tests, and it highlights the scaling capability of the EPYC’s 48-core design versus the Ryzen’s 8-core mobile part.

In Cinebench R15 multi-core, the EPYC again dominates with a score of 8748 versus the Ryzen’s 2106, a difference of 75.9%. The single-threaded tests show a similar pattern, albeit with a smaller absolute gap. In Cinebench R23 single-core, the EPYC scores 12252, leaving the Ryzen’s 1488 behind, a delta of 87.9%. In Cinebench R15 single-core, the EPYC scores 1234 against the Ryzen’s 240, a delta of 80.6%.

Notably, the EPYC’s single-core performance is not just relatively strong; it is absolutely superior. The EPYC’s Cinebench R23 single-core score of 12252 is nearly equal to the Ryzen’s multi-core score of 12845. This means that a single EPYC core is almost as fast as all 8 Ryzen cores combined in this specific workload. The data shows that the EPYC 9474F is not merely a scaled-up version of the Ryzen; it is a fundamentally faster processor per clock, thanks to its newer Zen 4 architecture and higher base clock of 3.60 GHz. All four head-to-head benchmark results favor the EPYC 9474F, giving it a clean sweep with 4 wins.