AMD EPYC 7343 vs Intel Core Ultra 7 265F Comparison

The Intel Core Ultra 7 265F and AMD EPYC 7343 are both 93rd-percentile CPUs, yet they are built for entirely different arenas. The data shows a desktop part with 20 cores and 20 threads facing a server part with 16 cores and 32 threads. Their average benchmark scores are nearly identical — 64438 for the Intel and 64202 for the AMD — but that parity masks dramatic swings in individual workloads. Across 17 head-to-head tests, the Intel wins 13, while the AMD takes 4. The EPYC’s wins are not minor; they are large, targeted advantages in specific server-style tasks. Conversely, the Intel’s victories are often decisive, particularly in floating-point and single-threaded performance. This is a matchup where the "best" choice depends entirely on whether the workload is built for massive memory bandwidth or raw per-core speed.

Head-to-Head Benchmarks

The most lopsided result favors the Intel Core Ultra 7 265F. In PassMark floating-point math, it scores 173855 against the EPYC’s 86311, a 101.4% advantage. That is more than double the EPYC’s output. The single-thread picture is similarly stark: the Intel scores 4750 in PassMark single-thread, beating the EPYC’s 2740 by 73.4%. This pattern repeats across Cinebench tests. In Cinebench R23 single-core, the Intel scores 5926 versus 5237, a 13.2% lead. Multi-core Cinebench results are consistent: R23 multi-core shows 41980 for the Intel against 37097 for the EPYC, again a 13.2% gap. The same 13.1-13.3% margin holds across Cinebench R15, R20, and R23, in both single and multi-core variants.

The AMD EPYC 7343 fights back in integer-heavy and memory-sensitive workloads. Its biggest win is PassMark data compression: 589770 versus the Intel’s 507018, a 14% advantage. PassMark integer math also goes to the EPYC, 156033 against 138078, an 11.5% lead. The EPYC’s most impressive relative win is PassMark physics, where it scores 4774 versus the Intel’s 3172, a 33.6% margin. It also takes PassMark random string sorting, 67576 to 62439, a 7.6% edge. The Intel still claims PassMark data encryption by 5.4% (39468 vs 37454) and extended instructions by 10.1% (39235 vs 35626). The Intel also wins PassMark find prime numbers by 8.9% (416 vs 382) and multithread by 13.2% (49410 vs 43644). The overall average scores are close — the Intel leads by 0.4% in the nearest-rival comparison — but the distribution of wins tells the real story.

Architecture Differences

The fundamental split is in design philosophy. The Intel Core Ultra 7 265F uses Arrow Lake, built on a 3 nm process at TSMC, with 17,800 million transistors on a 243 mm² die. The AMD EPYC 7343 is Zen 3 based, codenamed Milan, on a larger 7 nm node with 16,600 million transistors spread across four 81 mm² dies. Intel packs 20 cores with 20 threads, while AMD has 16 cores but 32 threads via simultaneous multithreading. The Intel boosts to 5.30 GHz from a 2.40 GHz base; the AMD runs at 3.20 GHz base and 3.90 GHz boost. The EPYC’s lower clock is offset by a massive 128 MB of shared L3 cache, versus the Intel’s 30 MB shared L3. Per-core cache also differs: Intel has 192 KB L1 and 3 MB L2 per core; AMD has 64 KB L1 and 512 KB L2 per core.

Memory architecture is where these CPUs diverge most sharply. The Intel supports DDR5 with a dual-channel bus and 102.4 GB/s bandwidth. The AMD supports DDR4 with an eight-channel bus and 204.8 GB/s bandwidth — exactly double the Intel’s throughput. The EPYC also supports ECC memory, which the Intel does not. PCIe connectivity heavily favors the server part: the EPYC offers Gen 4 with 128 lanes, while the Intel provides Gen 5 with 20 lanes. The EPYC’s socket is AMD Socket SP3, and its TDP is 190 W; the Intel fits Intel Socket 1851 at 65 W. The Intel launched in January 2025 at $379 MSRP; the AMD launched in March 2021 at $1565 MSRP. The Intel has no integrated graphics; the EPYC has none listed either. The Intel’s process node advantage (3 nm vs 7 nm) and higher clocks explain its single-thread dominance, while the EPYC’s cache and memory bandwidth explain its compression and physics wins.

The Verdict

The data points to two distinct buyers. If the workload involves high-frequency trading, scientific simulation, or any application that loves a single fast core, the Intel Core Ultra 7 265F is the clear pick. It wins every single-threaded test by at least 13.1% and doubles the EPYC’s floating-point throughput. Its 13.2% lead across all Cinebench multi-core tests also makes it the better general-purpose rendering CPU for desktops. The Intel’s 20 cores at 5.30 GHz boost are simply more responsive for interactive tasks. Its 65 W TDP also suggests far lower cooling requirements, though the FACT PACK provides no thermal numbers beyond that.

The AMD EPYC 7343 is the choice for server racks and virtualization. Its 128 MB L3 cache and 204.8 GB/s eight-channel memory bandwidth translate directly into wins in data compression (14% ahead), integer math (11.5% ahead), and physics (33.6% ahead). The 32 threads provide higher throughput in heavily parallel enterprise workloads, even if the per-core speed is lower. ECC memory support and 128 PCIe Gen 4 lanes make it suitable for mission-critical storage and networking applications where data integrity and I/O expansion matter more than single-thread latency. The EPYC’s 190 W TDP is a tradeoff for that server-class bandwidth. The average benchmark scores are nearly tied, but the workload profile decides the winner.

Specification Differences

| Specification | Intel Core Ultra 7 265F | AMD EPYC 7343 |

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

| Cores | 20 | 16 |

| Threads | 20 | 32 |

| Base Clock | 2.40 GHz | 3.20 GHz |

| Boost Clock | 5.30 GHz | 3.90 GHz |

| TDP | 65 W | 190 W |

| Socket | Intel Socket 1851 | AMD Socket SP3 |

| Architecture | Arrow Lake | Zen 3 (Milan) |

| Process Node | 3 nm | 7 nm |

| Transistors | 17,800 million | 16,600 million |

| Die Size | 243 mm² | 4x 81 mm² |

| L1 Cache | 192 KB (per core) | 64 KB (per core) |

| L2 Cache | 3 MB (per core) | 512 KB (per core) |

| L3 Cache | 30 MB (shared) | 128 MB (shared) |

| Memory Support | DDR5 | DDR4 |

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

| Memory Bandwidth | 102.4 GB/s | 204.8 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 5, 20 Lanes | Gen 4, 128 Lanes |

| Launch MSRP | $379 | $1565 |

FAQ

Q: Which CPU is faster in single-threaded workloads?

A: The Intel Core Ultra 7 265F wins every single-threaded benchmark. It leads by 13.2% in Cinebench R23 single-core (5926 vs 5237) and by 73.4% in PassMark single-thread (4750 vs 2740).

Q: Does the AMD EPYC 7343 have more cores?

A: No. The AMD has 16 cores, while the Intel has 20. However, the AMD has 32 threads versus the Intel’s 20, due to simultaneous multithreading.

Q: Which CPU has more memory bandwidth?

A: The AMD EPYC 7343. It provides 204.8 GB/s over an eight-channel DDR4 bus, exactly double the Intel’s 102.4 GB/s over a dual-channel DDR5 bus.

Q: Is the AMD EPYC 7343 better for data compression?

A: Yes. The AMD scores 589770 in PassMark data compression, which is 14% higher than the Intel’s 507018.

Q: Does the Intel Core Ultra 7 265F support ECC memory?

A: No. ECC memory support is listed as false for the Intel. The AMD EPYC 7343 supports ECC memory.

Q: What is the average benchmark score difference between the two?

A: The Intel’s average benchmark score is 64438, and the AMD’s is 64202. The Intel leads by 0.4% in the nearest-rival delta comparison.

Where Each One Wins

The Intel Core Ultra 7 265F wins in every category that rewards clock speed and modern process efficiency. It dominates Cinebench rendering tests, taking 13.2% leads in both R15, R20, and R23 multi-core variants. It is the choice for desktop productivity, 3D modeling, and any software that relies on single-thread performance — its 73.4% single-thread lead over the EPYC is a chasm. Floating-point math (101.4% ahead) makes it suitable for scientific computing that uses FP32/FP64 operations. It also wins encryption by 5.4%, extended instructions by 10.1%, and prime number finding by 8.9%. For a desktop user on a 65 W TDP, the Intel delivers superior responsiveness and rendering speed.

The AMD EPYC 7343 wins in enterprise data processing. Its 14% lead in data compression and 11.5% lead in integer math point to database and file-server workloads. The 33.6% win in physics is notable for simulation and engineering applications that use rigid-body dynamics. A 7.6% lead in random string sorting suggests advantages in sorting algorithms and text processing. The EPYC’s 128 MB L3 cache and 204.8 GB/s bandwidth are the likely drivers of these wins. For virtualization, ECC memory, and massive PCIe expansion, the EPYC is the data-driven choice. The 32 threads provide higher throughput in parallel integer workloads, even if the Intel wins overall multithread by 13.2% in PassMark. Choose the EPYC when the task is moving and processing large data sets; choose the Intel when the task is computing results quickly.