AMD EPYC 9015 vs AMD Ryzen 7 8745HX Comparison

Head-to-Head Benchmarks

The head-to-head results show a clear split between the two processors. The AMD Ryzen 7 8745HX wins 8 of the 11 recorded benchmark comparisons, while the AMD EPYC 9015 takes 3. The margins, however, tell a more nuanced story than the raw win count.

The Ryzen 7 8745HX's largest advantage comes in data encryption, where it scores 21840 against the EPYC 9015's 17790, a 22.8% lead. Single-thread performance also favors the mobile chip decisively: 3879 versus 3265, an 18.8% advantage. Random string sorting shows an 11.9% gap (44494 vs 39772), and integer math is 8.4% ahead (100328 vs 92524). These are substantial wins in latency-sensitive and scalar workloads.

The EPYC 9015's biggest win is in find prime numbers, where it scores 304 against the Ryzen's 159, a 47.7% advantage. That is a massive margin, indicating a fundamentally different execution profile for that workload. The EPYC also leads in physics by 41.9% (2893 vs 1681) and narrowly in extended instructions by 1.2% (27970 vs 27638).

The remaining contests are closer. Floating point math is nearly a tie, with the Ryzen 7 8745HX ahead by just 0.6% (61972 vs 61615). Data compression goes to the Ryzen by 3% (363759 vs 353014), and multithread favors the Ryzen by 2.7% (31517 vs 30689). The average benchmark scores reflect this mixed picture: the Ryzen 7 8745HX sits at 60104, while the EPYC 9015 records 57555. Both processors land in the 92nd percentile among all CPUs in the database.

Architecture Differences

The two chips come from different generations and target entirely different market segments. The Ryzen 7 8745HX is part of the 8000 series, built on Zen 4 with the Dragon Range codename. It uses a 5 nm process from TSMC and contains 6,570 million transistors on a 71 mm² die. The EPYC 9015 belongs to the EPYC 9005 series, uses Zen 5 with the Turin codename, and is manufactured on a 4 nm process. It packs 16,630 million transistors across a 2x 70.6 mm² dual-die configuration.

Cache hierarchies differ notably. The Ryzen 7 8745HX has 64 KB of L1 per core, 1 MB of L2 per core, and 32 MB of shared L3. The EPYC 9015 increases L1 to 80 KB per core, keeps L2 at 1 MB per core, and doubles shared L3 to 64 MB. These cache differences help explain the EPYC's strong showing in find prime numbers, a workload that often benefits from larger cache capacity.

Clock speeds also diverge. Both chips have a 3.60 GHz base clock, but the Ryzen 7 8745HX boosts to 5.10 GHz, a full 1.00 GHz higher than the EPYC 9015's 4.10 GHz. That boost advantage is the primary driver behind the Ryzen's single-thread and scalar performance wins.

Memory architecture is where the EPYC asserts its server pedigree. The Ryzen 7 8745HX supports dual-channel DDR5 with 83.2 GB/s of bandwidth and no ECC. The EPYC 9015 supports twelve-channel DDR5 with 576.0 GB/s, a massive 6.9x bandwidth advantage, and includes ECC support. PCIe connectivity also favors the EPYC: 128 Gen 5 lanes versus 28 Gen 5 lanes for the Ryzen.

The Ryzen 7 8745HX includes integrated Radeon 610M graphics and an unlocked multiplier, while the EPYC 9015 has no integrated graphics and a locked multiplier. Socket compatibility is entirely different: the Ryzen uses AMD Socket FL1 (mobile), while the EPYC uses AMD Socket SP5 (server). Thermal design power reflects this split: 55 W for the Ryzen, 125 W for the EPYC. The Ryzen 7 8745HX was released on 2025-04-22, while the EPYC 9015 launched earlier on 2024-10-09.

Where Each One Wins

The Ryzen 7 8745HX is the clear choice for single-threaded and latency-sensitive workloads. Its 18.8% single-thread lead over the EPYC 9015, combined with an 8.4% integer math advantage and an 11.9% random string sorting win, makes it better suited for interactive applications, developer toolchains, and general desktop-style computing where per-core responsiveness matters more than aggregate throughput. The 22.8% encryption win also points to strength in security-related processing and data protection tasks that rely on scalar execution.

The EPYC 9015 dominates in specific server-oriented workloads. The 47.7% margin in find prime numbers is a strong signal for mathematical and computational workloads that stress cache residency and instruction efficiency. The 41.9% physics advantage similarly indicates superior performance in simulation and physics-based calculations. The EPYC's extended instructions lead, while narrow, shows a small edge in workloads leveraging newer instruction set extensions. Combined with twelve-channel memory bandwidth, ECC support, and 128 PCIe Gen 5 lanes, the EPYC 9015 is positioned for memory-bound server tasks, virtualization, and database workloads where bandwidth and reliability are critical.

The multithread and data compression results are closer, with the Ryzen 7 8745HX ahead by 2.7% and 3% respectively. These workloads do not show a decisive advantage for either chip, meaning users with mixed workloads would see similar aggregate performance. Floating point math is effectively tied, so scientific computing that relies on FPU throughput would not favor either processor strongly.

FAQ

Q: Which processor has higher single-thread performance?

A: The AMD Ryzen 7 8745HX scores 3879 in single-thread benchmarks, an 18.8% advantage over the AMD EPYC 9015's 3265.

Q: How do the two compare in multithreaded workloads?

A: The AMD Ryzen 7 8745HX leads with 31517 versus the AMD EPYC 9015's 30689, a 2.7% difference. Both chips have 8 cores and 16 threads.

Q: Which processor has a larger L3 cache?

A: The AMD EPYC 9015 has 64 MB of shared L3, double the 32 MB found on the AMD Ryzen 7 8745HX.

Q: What is the memory bandwidth difference?

A: The AMD EPYC 9015 supports twelve-channel memory with 576.0 GB/s bandwidth, while the AMD Ryzen 7 8745HX is dual-channel with 83.2 GB/s.

Q: Does either processor support ECC memory?

A: Only the AMD EPYC 9015 supports ECC memory. The AMD Ryzen 7 8745HX does not.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 7 8745HX boosts to 5.10 GHz, compared to 4.10 GHz for the AMD EPYC 9015.

Specification Differences

| Specification | AMD Ryzen 7 8745HX | AMD EPYC 9015 |

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

| Series | 8000 series | EPYC 9005 series |

| Architecture | Zen 4 | Zen 5 |

| Codename | Dragon Range | Turin |

| Process Node | 5 nm | 4 nm |

| Transistors | 6,570 million | 16,630 million |

| Die Size | 71 mm² | 2x 70.6 mm² |

| Base Clock | 3.60 GHz | 3.60 GHz |

| Boost Clock | 5.10 GHz | 4.10 GHz |

| TDP | 55 W | 125 W |

| Socket | AMD Socket FL1 | AMD Socket SP5 |

| L1 Cache | 64 KB (per core) | 80 KB (per core) |

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

| L3 Cache | 32 MB (shared) | 64 MB (shared) |

| Memory Bus | Dual-channel | Twelve-channel |

| Memory Bandwidth | 83.2 GB/s | 576.0 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 5, 28 Lanes (CPU only) | Gen 5, 128 Lanes (CPU only) |

| Integrated Graphics | Radeon 610M | N/A |

| Market Segment | Mobile | Server/Workstation |

| Multiplier Unlocked | Yes | No |

| Release Date | 2025-04-22 | 2024-10-09 |

| Launch MSRP | N/A | $527 |