AMD EPYC 9474F vs AMD Ryzen 7 7840U Comparison

Head-to-Head Benchmarks

The benchmark comparison between the AMD Ryzen 7 7840U and the AMD EPYC 9474F is decisively one-sided, with the EPYC 9474F winning all four head-to-head tests. The data shows a consistent and massive performance gap in favor of the server-class processor, though the magnitude of the difference varies by workload type.

In Cinebench R23 multi-core, the EPYC 9474F scores 86,790 against the Ryzen 7 7840U's 12,719. That is a delta of -85.3% for the 7840U, meaning the EPYC delivers roughly 6.8 times the multi-threaded rendering throughput. This is the largest margin in any shared test, and it reflects the fundamental disparity in core count and memory bandwidth between these two parts.

The single-core picture tells a similar story, albeit with a slightly different ratio. In Cinebench R23 single-core, the EPYC 9474F posts 12,252 while the Ryzen 7 7840U manages 1,677.5, a delta of -86.3%. Even with a lower boost clock of 4.10 GHz compared to the 7840U's 5.10 GHz, the EPYC's Zen 4 architecture and superior memory subsystem allow it to dominate in single-threaded performance as well. The 7840U's higher clock speed does not translate into a win here.

Cinebench R15 results follow the same pattern. In multi-core, the EPYC scores 8,748 versus the Ryzen's 1,990, a -77.3% delta. In single-core, the EPYC scores 1,234 against the Ryzen's 264, a -78.6% delta. The EPYC's advantage is slightly less pronounced in R15 multi-core than in R23, but the outcome remains unambiguous. Across all four shared benchmarks, the EPYC 9474F wins by margins ranging from 77.3% to 86.3%, and the Ryzen 7 7840U records zero wins in this head-to-head.

The average benchmark score for the EPYC 9474F is 25,103, while the Ryzen 7 7840U averages 25,432. The database places both processors at the 77th percentile among all CPUs, which is notable given their wildly different market positions. The Ryzen's nearest rivals include the Intel Core i7-11700KF with an average score of 25,423 (0% delta), the AMD Ryzen 7 5825U at 25,446 (-0.1%), and the AMD Ryzen 5 7640U at 25,485 (-0.2%). The EPYC's nearest rivals are far more modest: the AMD Ryzen 7 7735HS at 25,147 (-0.2%), the AMD Ryzen 7 6800H at 25,201 (-0.4%), and the AMD Ryzen 5 8400F at 25,005 (+0.4%). These rival lists reveal that while the EPYC's raw scores in dedicated Cinebench tests are enormous, its average across all benchmark types is comparable to mainstream mobile and desktop chips.

Architecture Differences

The two processors share the same Zen 4 architecture and both come from TSMC foundries, but nearly every other architectural parameter diverges sharply. The Ryzen 7 7840U, codenamed Phoenix, is built on a 4 nm process node, while the EPYC 9474F, codenamed Genoa, uses a 5 nm node. The transistor counts reflect the scale difference: the 7840U packs 25,000 million transistors on a 178 mm² die, whereas the EPYC 9474F integrates 52,560 million transistors across a multi-chip design with 8x 72 mm² dies.

Core and thread counts establish the clearest separation. The Ryzen 7 7840U offers 8 cores and 16 threads, while the EPYC 9474F provides 48 cores and 96 threads, a 6x increase in both dimensions. Cache hierarchies scale accordingly. Both share 64 KB of L1 and 1 MB of L2 per core, but the L3 cache jumps from 16 MB shared on the Ryzen to 256 MB shared on the EPYC, a 16x difference that heavily favors server workloads with large working sets.

Memory support further differentiates the pair. Both support DDR5 and ECC memory, but the Ryzen 7 7840U operates on a dual-channel bus with 89.6 GB/s of bandwidth, while the EPYC 9474F uses a twelve-channel configuration delivering 460.8 GB/s. That is more than 5x the memory bandwidth, which directly impacts multi-threaded scaling and data-intensive tasks. PCIe connectivity also differs: the Ryzen provides Gen 4 with 20 lanes, while the EPYC offers Gen 5 with 128 lanes, a generational and lane-count advantage suited for high-throughput server I/O.

The Ryzen 7 7840U includes integrated Radeon 780M graphics, whereas the EPYC 9474F has no integrated graphics. The Ryzen targets the mobile segment with a 28 W TDP and uses AMD Socket FP8, while the EPYC is a server/workstation part with a 360 W TDP on AMD Socket SP5. Clock speeds are another point of contrast: the Ryzen has a base clock of 3.30 GHz and a boost clock of 5.10 GHz, while the EPYC runs at 3.60 GHz base and 4.10 GHz boost. The Ryzen's higher boost clock is insufficient to overcome the EPYC's architectural advantages in the recorded benchmarks.

Where Each One Wins

The EPYC 9474F wins every shared benchmark, so the use-case split is driven by workload characteristics rather than head-to-head results. In multi-threaded rendering, data compression, and large-scale compute, the EPYC's 48 cores and 96 threads provide a decisive edge. The Cinebench R23 multi-core score of 86,790 versus 12,719 demonstrates that the EPYC is designed for sustained, heavily parallel workloads where core count and memory bandwidth dominate. The 256 MB L3 cache and 460.8 GB/s memory bandwidth further reinforce this position for server and workstation tasks.

The Ryzen 7 7840U, despite losing the head-to-head, has strengths that are not captured in the shared tests. Its integrated Radeon 780M graphics make it suitable for systems without a discrete GPU. Its 28 W TDP and mobile socket indicate a design optimized for laptops and compact devices where power efficiency is critical. The higher 5.10 GHz boost clock suggests responsiveness in lightly threaded tasks, even though the EPYC still wins the recorded single-core tests. The 7840U's 16 MB L3 cache and dual-channel memory are typical for a mobile part, and its 77th percentile standing among all CPUs shows it is competitive within its class.

The EPYC 9474F, released on 2022-11-09, is a production server processor with a launch MSRP of $6780. Its 360 W TDP and SP5 socket target data center deployments, not portable systems. The Ryzen 7 7840U has no release date or launch MSRP in the database, underscoring its role as a mobile OEM part rather than a retail server component.

For workloads that fit within the Ryzen's thermal and power envelope, such as everyday computing, light content creation, and mobile productivity, the 7840U offers a balanced feature set with integrated graphics and a modest power draw. For any workload that can scale across dozens of cores, requires massive cache, or demands high memory bandwidth, the EPYC 9474F is the clear choice based on the recorded data.

FAQ

Q: Which processor wins in multi-core Cinebench R23?

A: The AMD EPYC 9474F wins with a score of 86,790, compared to the AMD Ryzen 7 7840U's 12,719, a delta of -85.3% for the Ryzen.

Q: Does the Ryzen 7 7840U win any benchmark in the head-to-head comparison?

A: No. The database records zero wins for the Ryzen 7 7840U across the four shared tests, all of which go to the AMD EPYC 9474F.

Q: What is the single-core performance difference in Cinebench R23?

A: The EPYC 9474F scores 12,252 while the Ryzen 7 7840U scores 1,677.5, a delta of -86.3%, meaning the EPYC is substantially faster in single-threaded rendering despite the Ryzen's higher boost clock.

Q: How do the core counts compare?

A: The Ryzen 7 7840U has 8 cores and 16 threads, while the EPYC 9474F has 48 cores and 96 threads.

Q: Do both processors support ECC memory?

A: Yes, both the Ryzen 7 7840U and the EPYC 9474F support ECC memory, though the EPYC uses a twelve-channel DDR5 bus with 460.8 GB/s bandwidth, while the Ryzen uses dual-channel DDR5 with 89.6 GB/s.

Q: What are the average benchmark scores for each processor?

A: The Ryzen 7 7840U has an average benchmark score of 25,432, and the EPYC 9474F has an average of 25,103. Both sit at the 77th percentile among all CPUs.

The Verdict

The data presents a clear hierarchy: the AMD EPYC 9474F is the superior processor in every measured head-to-head benchmark. Its 48 cores, 96 threads, 256 MB L3 cache, and 460.8 GB/s memory bandwidth produce results that the Ryzen 7 7840U cannot approach. The EPYC wins Cinebench R15 multi-core (8,748 vs 1,990), R15 single-core (1,234 vs 264), R23 multi-core (86,790 vs 12,719), and R23 single-core (12,252 vs 1,677.5). For anyone selecting a processor for server, workstation, or heavily parallel compute tasks, the EPYC 9474F is the only rational choice from this comparison.

The Ryzen 7 7840U, however, should not be dismissed entirely. Its 28 W TDP, integrated Radeon 780M graphics, and mobile FP8 socket make it a purpose-built part for laptops and compact devices. Its 5.10 GHz boost clock and 8-core Zen 4 design deliver respectable performance for a mobile processor, and the database places it at the same 77th percentile as the EPYC. The Ryzen's 16 MB L3 cache and dual-channel memory are adequate for its intended market, and its average benchmark score of 25,432 actually edges out the EPYC's 25,103.

The choice between these two processors is therefore not about performance per se, since the EPYC dominates across the board, but about use case. The EPYC 9474F is for environments where raw throughput, massive cache, and high memory bandwidth are non-negotiable, and where the 360 W TDP and server socket are acceptable trade-offs. The Ryzen 7 7840U is for mobile systems that need integrated graphics, low power consumption, and a compact footprint, and where the performance gap to the EPYC is irrelevant because the workloads are fundamentally different in scale and nature.

The recorded data shows zero wins for the Ryzen 7 7840U in the head-to-head, and the EPYC's margins range from 77.3% to 86.3%. There is no scenario in the benchmarks where the Ryzen outperforms the EPYC, so the verdict is straightforward: the EPYC 9474F wins on every metric that the database measures directly, while the Ryzen 7 7840U remains a strong mobile option whose advantages lie outside the shared test suite.