AMD EPYC 7413 vs AMD Ryzen 9 8940HX Comparison

The AMD Ryzen 9 8940HX and AMD EPYC 7413 represent two fundamentally different interpretations of high-core-count performance, and benchmark data shows the mobile Dragon Range part wins 13 of 17 head-to-head tests despite having fewer cores. The Ryzen 9 8940HX leads in overall average benchmark score with 82,332 against the EPYC’s 80,041, a 2.9% advantage, yet the EPYC 7413 counters with decisive victories in encryption, prime number finding, integer math, and physics workloads. Neither processor holds a universal crown; instead, the data reveals a clear split between single-thread-sensitive and memory-bandwidth-hungry applications.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen 9 8940HX posts an average benchmark score of 82,332, which is 2.9% higher than the AMD EPYC 7413’s 80,041. Both processors sit in the 97th percentile of all CPUs, indicating top-tier placement overall.

Q: How large is the single-thread performance gap?

A: The Ryzen 9 8940HX dominates in the PassMark single-thread test with a score of 4,033 versus the EPYC 7413’s 2,400, a massive 68% advantage. This is the largest delta in any benchmark between the two.

Q: Does the EPYC 7413 win any benchmark categories?

A: Yes, the EPYC 7413 wins 4 of 17 head-to-head tests. Its most significant victories include a 55.1% lead in PassMark physics (4,708 vs 2,115) and a 31.5% lead in PassMark find prime numbers (397 vs 272).

Q: What are the core and thread counts for each?

A: The Ryzen 9 8940HX has 16 cores and 32 threads, while the EPYC 7413 has 24 cores and 48 threads. Despite having 50% more cores, the EPYC does not translate that into a multi-core benchmark sweep.

Q: Which processor supports ECC memory?

A: The AMD EPYC 7413 supports ECC memory, whereas the AMD Ryzen 9 8940HX does not. This aligns with the EPYC’s server/workstation market segment versus the Ryzen’s mobile positioning.

Q: How do the processors compare in memory bandwidth?

A: The EPYC 7413 offers 204.8 GB/s of memory bandwidth over an eight-channel DDR4 bus, which is more than double the Ryzen 9 8940HX’s 83.2 GB/s over a dual-channel DDR5 bus.

Architecture Differences

The Ryzen 9 8940HX is built on TSMC’s 5 nm process using Zen 4 architecture, codenamed Dragon Range, while the EPYC 7413 uses the older Zen 3 architecture on TSMC’s 7 nm node, codenamed Milan. This process advantage gives the Ryzen a transistor count of 13,140 million spread across two 71 mm² dies, whereas the EPYC packs 16,600 million transistors across four 81 mm² dies. The Ryzen features 64 KB of L1 cache per core and 1 MB of L2 per core, but the EPYC’s L2 is smaller at 512 KB per core, partially offset by a much larger shared L3 cache of 128 MB versus the Ryzen’s 64 MB.

Memory architecture differs dramatically. The Ryzen 9 8940HX uses dual-channel DDR5 with 83.2 GB/s bandwidth, while the EPYC 7413 employs eight-channel DDR4 with 204.8 GB/s bandwidth. The EPYC also supports ECC memory, a feature absent on the Ryzen. PCIe connectivity shows a similar split: the Ryzen offers Gen 5 with 28 CPU lanes, while the EPYC provides Gen 4 with 128 lanes. The Ryzen integrates a Radeon 610M graphics unit, while the EPYC has no integrated graphics. The Ryzen has an unlocked multiplier, and the EPYC does not, though the former’s socket is AMD Socket FL1 versus the latter’s AMD Socket SP3.

Where Each One Wins

The Ryzen 9 8940HX wins decisively in single-threaded and latency-sensitive workloads. Its 68% lead in PassMark single-thread and 5.7% edge across all Cinebench single-core tests (R15, R20, R23) makes it the clear choice for applications that rely on per-core speed. It also excels in extended instructions, beating the EPYC by 19.6% in PassMark extended instructions, and takes PassMark multithread by 8%. Data compression favors the Ryzen by 3.2%, and floating-point math goes its way by 6%. For users running rendering tasks, the Cinebench suite shows the Ryzen ahead by 5.7% in both single and multi-core iterations across R15, R20, and R23.

The EPYC 7413 wins in workloads that leverage massive thread counts and memory bandwidth. Its physics score of 4,708 crushes the Ryzen’s 2,115 by 55.1%, indicating superiority in simulation and physics calculations. Prime number finding shows a 31.5% EPYC advantage, and integer math goes to the EPYC by 4.5%. Data encryption is another EPYC win, with a 48,492 score versus 44,430, an 8.4% margin. These wins align with the EPYC’s larger core count and eight-channel memory subsystem, which benefit throughput-oriented server tasks.

Specification Differences

| Specification | AMD Ryzen 9 8940HX | AMD EPYC 7413 |

|---|---|---|

| Cores | 16 | 24 |

| Threads | 32 | 48 |

| Base Clock | 2.40 GHz | 2.65 GHz |

| Boost Clock | 5.30 GHz | 3.60 GHz |

| TDP | 55 W | 180 W |

| Socket | AMD Socket FL1 | AMD Socket SP3 |

| Architecture | Zen 4 | Zen 3 |

| Codename | Dragon Range | Milan |

| Process Node | 5 nm | 7 nm |

| Transistors | 13,140 million | 16,600 million |

| Die Size | 2x 71 mm² | 4x 81 mm² |

| L2 Cache | 1 MB (per core) | 512 KB (per core) |

| L3 Cache | 64 MB (shared) | 128 MB (shared) |

| Memory Support | DDR5 | DDR4 |

| Memory Bus | Dual-channel | Eight-channel |

| Memory Bandwidth | 83.2 GB/s | 204.8 GB/s |

| ECC Memory | false | true |

| PCIe | Gen 5, 28 Lanes | Gen 4, 128 Lanes |

| Integrated Graphics | Radeon 610M | null |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2025-04-22 | 2021-03-14 |

| Multiplier Unlocked | true | false |

Head-to-Head Benchmarks

The most striking result is in PassMark single-thread, where the Ryzen 9 8940HX scores 4,033 against the EPYC’s 2,400 — a 68% advantage that dwarfs every other delta. This comes from the Ryzen’s 5.30 GHz boost clock versus the EPYC’s 3.60 GHz, combined with the newer Zen 4 architecture. Cinebench results reinforce a consistent pattern: the Ryzen wins R15 multi-core 4,584 to 4,338, R20 multi-core 19,104 to 18,078, and R23 multi-core 45,488 to 43,044, each by 5.7%. Single-core Cinebench scores follow the same 5.7% margin, with the Ryzen taking R23 single-core 6,421 to 6,076.

The EPYC’s wins are concentrated in specialized areas. PassMark physics shows the largest EPYC margin at 55.1%, with a score of 4,708 versus 2,115. Prime number finding favors the EPYC 397 to 272, a 31.5% gap. Data encryption goes to the EPYC 48,492 to 44,430, an 8.4% lead, and integer math is a closer 4.5% EPYC win at 215,629 versus 205,945. The Ryzen counters in PassMark multithread with 54,675 to 50,641, an 8% win, and takes extended instructions 54,674 to 45,696, a 19.6% margin. Random string sorting also goes to the Ryzen at 85,869 versus 81,134, a 5.8% edge.

The Verdict

Choose the AMD Ryzen 9 8940HX if your priority is raw single-thread speed and general multi-core performance in a mobile form factor. The data shows it wins 13 of 17 benchmarks, including every Cinebench test and the critical PassMark single-thread test by 68%. Its 5.30 GHz boost clock and Zen 4 architecture deliver superior results in rendering, compression, floating-point math, and extended instruction workloads. The 55 W TDP and integrated Radeon 610M graphics make it a viable option for high-performance laptops, though it lacks ECC support and offers less memory bandwidth.

Choose the AMD EPYC 7413 if your workloads involve physics simulation, heavy integer math, encryption, or prime number calculations, where it wins by 55.1%, 4.5%, 8.4%, and 31.5% respectively. Its 24 cores and 48 threads, combined with 204.8 GB/s of eight-channel memory bandwidth, provide a clear advantage in server and workstation tasks that scale with memory throughput. The EPYC’s ECC support, 128 PCIe Gen 4 lanes, and 128 MB L3 cache further cement its position for data-center deployments. However, its 180 W TDP and 3.60 GHz boost clock limit its appeal for single-thread-sensitive applications, where it trails the Ryzen by 68%.