AMD EPYC 4465P vs Intel Core Ultra 7 265HX Comparison

The Intel Core Ultra 7 265HX and AMD EPYC 4465P are close competitors in aggregate benchmarks, with the EPYC’s average score of 67,008 trailing the Intel part’s 67,071 by a negligible 0.1%. However, the distribution of wins across different workloads tells a more nuanced story. The AMD chip claims 13 benchmark victories against Intel’s 4, but the margin and nature of those wins reveal distinct strengths that matter more than the raw win tally.

Head-to-Head Benchmarks

The most decisive victory in this comparison belongs to Intel in floating-point math. The Core Ultra 7 265HX scores 170,392 in PassMark floating-point operations, which is a massive 62.7% ahead of the EPYC 4465P’s 104,712. That is not a marginal edge; it is a structural advantage that will show up in any workload dominated by FP calculations. Intel also wins data encryption decisively, scoring 43,468 against AMD’s 33,171, a 31% lead that makes the 265HX the clear pick for encryption-heavy tasks.

Intel’s other two wins are smaller but still relevant. In extended instructions, the 265HX scores 42,181 versus 41,348 for the EPYC, a 2% edge. In prime number finding, Intel’s 392 beats AMD’s 325, a 20.6% advantage. The prime number test is a synthetic measure, but it does point to Intel’s integer pipeline handling certain algorithms more efficiently.

AMD’s wins are numerous, but most are narrow. In Cinebench, the EPYC 4465P edges out the 265HX across every version tested. In R15, both multi-core and single-core show AMD ahead by 1.3%, with scores of 4,326 vs 4,268 and 610 vs 602 respectively. The pattern repeats in R20 (18,025 vs 17,787 multi-core; 2,544 vs 2,511 single-core) and R23 (42,918 vs 42,352 multi-core; 6,059 vs 5,979 single-core). Every Cinebench delta is exactly 1.3%, which suggests a consistent clock-for-clock efficiency advantage for Zen 5 rather than a workload-specific quirk.

The EPYC’s most significant wins come in physics and integer math. In PassMark physics, AMD scores 4,043 against Intel’s 2,325, a 42.5% lead that is almost as one-sided as Intel’s floating-point win. In integer math, the EPYC scores 176,946 versus 140,790, a 20.4% advantage. These are large gaps that indicate the AMD chip’s 12 cores with 24 threads handle integer-heavy and physics simulation workloads with far more throughput.

The remaining AMD wins are moderate. Data compression shows the EPYC at 574,486 versus 542,796, a 5.5% lead. Random string sorting goes to AMD at 69,907 vs 65,478, a 6.3% edge. The PassMark multithread test gives AMD a 50,492 vs 49,826 result, a 1.3% margin, and single-thread tests show AMD ahead by 1.7% (4,611 vs 4,531). These smaller deltas align with the overall average score difference, suggesting that in most general-purpose tasks the two CPUs are effectively interchangeable.

The Verdict

The data shows two different philosophies converging on similar average performance. The Intel Core Ultra 7 265HX is the better choice if your workload is dominated by floating-point math, encryption, or extended instruction sets. A 62.7% lead in FP math and a 31% lead in encryption are not trivial; they will translate directly into faster completion times for scientific computing, financial modeling, or secure data processing.

The AMD EPYC 4465P is the better pick for physics simulation, integer-heavy code, and Cinebench-style rendering workloads. Its 42.5% physics win and 20.4% integer math win are substantial, and its consistent 1.3% edge across all Cinebench tests makes it the safer bet for content creation that relies on those engines. The EPYC also wins data compression and random string sorting, which are common in database and server tasks.

For a mobile platform, the 265HX’s 55W TDP and 20 cores make it a compelling option for laptops. For a server or workstation, the EPYC’s 65W TDP, ECC memory support, and AM5 socket integration are more practical. Neither chip is a clear overall winner; the choice depends entirely on which benchmark category matches your primary use case.

Architecture Differences

The Intel Core Ultra 7 265HX is built on Arrow Lake-HX, a 3nm TSMC process with 17,800 million transistors on a 243 mm² die. It has 20 cores and 20 threads, meaning no hyperthreading. The AMD EPYC 4465P uses Zen 5 architecture on a 4nm TSMC node, with 16,630 million transistors spread across two 70.6 mm² dies. It has 12 cores and 24 threads, relying on simultaneous multithreading to double thread count.

Cache configurations diverge significantly. Intel provides 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3. AMD uses 80 KB of L1 per core, 1 MB of L2 per core, and a much larger 64 MB of shared L3. The larger L3 on the EPYC explains its advantage in data compression and random string sorting, where larger working sets can stay cached.

Process node and die size differences are notable. Intel’s 3nm node is newer than AMD’s 4nm, and Intel packs more transistors into a larger monolithic die. AMD uses a chiplet design with two smaller dies, which can improve yields but adds inter-die communication overhead. The Intel part has an unlocked multiplier, while the EPYC is locked. Intel integrates Arc Xe-LPG Graphics with 64 execution units, while AMD includes Radeon Graphics.

FAQ

Q: Which CPU has a higher boost clock?

A: The AMD EPYC 4465P boosts to 5.40 GHz, slightly higher than the Intel Core Ultra 7 265HX’s 5.30 GHz.

Q: Do both CPUs support ECC memory?

A: No. The AMD EPYC 4465P supports ECC memory, while the Intel Core Ultra 7 265HX does not.

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 7 265HX has 20 cores and 20 threads. The AMD EPYC 4465P has 12 cores and 24 threads.

Q: What is the memory bandwidth difference?

A: The Intel Core Ultra 7 265HX has 102.4 GB/s of memory bandwidth, while the AMD EPYC 4465P has 89.6 GB/s.

Q: Which chip has a larger L3 cache?

A: The AMD EPYC 4465P has 64 MB of shared L3 cache, more than double the Intel Core Ultra 7 265HX’s 30 MB.

Q: Are both processors currently in production?

A: Yes, both the Intel Core Ultra 7 265HX and the AMD EPYC 4465P have an active production status.

Where Each One Wins

The Intel Core Ultra 7 265HX wins decisively in floating-point math (62.7% lead), data encryption (31% lead), and prime number finding (20.6% lead). If your workload involves heavy FP calculations, cryptographic operations, or algorithms that stress extended instruction sets, the 265HX is the stronger part. Its 20 cores and 30 MB of L3 also make it a capable mobile processor for multitasking, though it loses to AMD in most aggregate multithread tests.

The AMD EPYC 4465P wins in physics simulation (42.5% lead), integer math (20.4% lead), and data compression (5.5% lead). It also takes every Cinebench test by 1.3%, which indicates a consistent edge in rendering workloads. For server or workstation use where ECC memory is required, the EPYC is the only viable option of the two. Its 64 MB L3 cache and dual-die design give it an advantage in data-heavy tasks like compression and sorting.

The PassMark multithread test goes to AMD by 1.3%, and single-thread performance also favors AMD by 1.7%. This means that for general productivity, the EPYC is slightly faster per thread and marginally better at multi-threaded throughput. The Intel chip fights back with its 4 wins, but those wins are heavily concentrated in specific instruction types rather than broad workloads.

Specification Differences

| Specification | Intel Core Ultra 7 265HX | AMD EPYC 4465P |

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

| Cores | 20 | 12 |

| Threads | 20 | 24 |

| Base Clock | 2.60 GHz | 3.40 GHz |

| Boost Clock | 5.30 GHz | 5.40 GHz |

| TDP | 55W | 65W |

| Socket | Intel BGA 2114 | AMD Socket AM5 |

| Architecture | Arrow Lake | Zen 5 |

| Codename | Arrow Lake-HX | Grado |

| Process Node | 3 nm | 4 nm |

| Foundry | TSMC | TSMC |

| Transistors | 17,800 million | 16,630 million |

| Die Size | 243 mm² | 2x 70.6 mm² |

| L1 Cache | 192 KB (per core) | 80 KB (per core) |

| L2 Cache | 3 MB (per core) | 1 MB (per core) |

| L3 Cache | 30 MB (shared) | 64 MB (shared) |

| Memory Support | DDR5 | DDR5 |

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

| Memory Bandwidth | 102.4 GB/s | 89.6 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 5, 20 Lanes | Gen 5, 24 Lanes |

| Integrated Graphics | Arc Xe-LPG 64EU | Radeon Graphics |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2025-01-12 | 2025-05-12 |

| Launch MSRP | None | $399 |

| Multiplier Unlocked | Yes | No |

| Part Number | SRVFH | 100-000001558 |