AMD Ryzen 3 3100U vs Intel Core i5-14400F Comparison

Where Each One Wins

The recorded data splits cleanly along market lines. The AMD Ryzen 3 3100U wins no benchmark comparisons in the head-to-head set, while the Intel Core i5-14400F wins all 11 recorded tests. That zero-to-eleven margin reflects two processors built for entirely different segments: the Ryzen 3 3100U is a mobile part aimed at low-power notebooks, while the Core i5-14400F is a desktop part designed for sustained throughput.

The Intel chip's dominance is consistent across every workload category. In single-threaded tests, the Core i5-14400F scores 3701 in PassMark single-thread while the Ryzen 3 3100U scores 1592. In multithreaded work, the gap widens dramatically: 25470 versus 3348 in PassMark multithread. The largest relative margin appears in floating-point math, where the Intel part leads by 90.5%, scoring 61319 against 5854. The smallest relative margin is still substantial at 57%, which occurs in both single-thread tests.

For use-case segmentation, the data suggests the Ryzen 3 3100U remains relevant only for lightweight mobile workloads where its 15 W thermal envelope matters more than raw output. The Core i5-14400F, with its 65 W TDP, occupies the desktop performance tier where the 10-core, 16-thread configuration can stretch into productivity, content creation, and encoding tasks. The benchmark distribution shows no workload category where the AMD mobile chip closes the gap to within a competitive range.

Architecture Differences

The two processors come from different foundries, nodes, and design generations. The AMD Ryzen 3 3100U uses GlobalFoundries' 12 nm process with a die size of 210 mm² and 4,940 million transistors. It is built on the Zen+ (Picasso) architecture, which is a refinement of the original Zen design. The Intel Core i5-14400F uses Intel's 10 nm process with a die size of 215 mm²; transistor count is not recorded in the database. Intel's architecture is Raptor Lake, specifically Raptor Lake-R, the 14th generation Core family.

Core and thread counts differ by a factor of five and eight respectively. The Ryzen 3 3100U has 2 cores and 2 threads, while the Core i5-14400F has 10 cores and 16 threads. Cache hierarchies also diverge sharply. The AMD chip provides 96 KB of L1 per core, 512 KB of L2 per core, and 4 MB of shared L3. The Intel chip provides 80 KB of L1 per core, 1.25 MB of L2 per core, and 20 MB of shared L3. That 16 MB difference in shared cache is one of the structural reasons why the Intel part sustains higher throughput in cache-sensitive workloads.

Memory support shows another split. The Ryzen 3 3100U supports DDR4 only, while the Core i5-14400F supports both DDR4 and DDR5. Both run dual-channel memory buses. The AMD part records a memory bandwidth of 38.4 GB/s; the Intel part has no bandwidth figure in the database. ECC memory support is absent on the AMD chip but present on the Intel chip. PCIe generations differ as well: the Ryzen 3 3100U uses Gen 3, while the Core i5-14400F uses Gen 5 with 16 lanes for the CPU.

Integrated graphics separate the two as well. The Ryzen 3 3100U includes Radeon Vega 8 graphics, while the Core i5-14400F has no integrated graphics (listed as N/A). That makes the Intel part dependent on a discrete GPU, whereas the AMD mobile chip can operate in a system without one. The Intel part also has a higher base clock at 2.50 GHz versus 1.90 GHz, and a higher boost clock at 4.70 GHz versus 3.20 GHz. Neither processor has an unlocked multiplier.

Head-to-Head Benchmarks

The PassMark suite provides the only overlapping test set between the two processors. Every recorded comparison favors the Intel Core i5-14400F, but the margins vary by workload type.

The largest deficit for the AMD Ryzen 3 3100U appears in floating-point math, where the Intel part scores 61319 against 5854, a delta of 90.5%. Integer math shows a similar pattern: 81524 versus 8873, a delta of 89.1%. Extended instructions follow at 19937 versus 2116, a delta of 89.4%. These three tests indicate that the Intel chip's wider execution resources and larger cache translate into outsized advantages on arithmetic-heavy code.

Data compression and encryption also show wide gaps. PassMark data compression scores 315521 for the Intel part versus 38455 for the AMD part, a delta of 87.8%. Data encryption scores 16949 versus 1972, a delta of 88.4%. Random string sorting, which stresses memory access patterns and cache behavior, scores 32680 versus 4666, a delta of 85.7%. Find prime numbers, a test sensitive to integer throughput and branch handling, scores 86 versus 18, a delta of 79.1%. Physics simulation scores 1523 versus 232, a delta of 84.8%.

The multithread score of 25470 versus 3348 (delta 86.9%) reflects the core and thread count disparity, but the single-thread results are more instructive for architectural comparison. PassMark single-thread scores 3701 versus 1592, a delta of 57%. That 57% gap is the narrowest of the entire set, yet still a decisive lead for the Intel part. Even in a purely single-core scenario, the Raptor Lake design's higher clocks and newer microarchitecture outpace the older Zen+ mobile chip by a wide margin.

In the database's overall percentile ranking, the Core i5-14400F sits at the 83rd percentile across all CPUs, while the Ryzen 3 3100U sits at the 62nd percentile. The average benchmark score for the Intel part is 32279, compared to 6247 for the AMD part. The Intel processor's nearest rivals by average score include the AMD Ryzen 7 PRO 8840U (32233, 0.1% delta), the Intel Core i9-11900 (32226, 0.2% delta), and the AMD Ryzen 7 6800HS (32354, 0.2% delta). The AMD Ryzen 3 3100U's nearest rivals include the AMD Ryzen Threadripper 1950X (6231, 0.3% delta), the AMD EPYC 7272 (6186, 1% delta), and the Intel Core i9-7940X (6147, 1.6% delta). These comparison groups show that the two processors occupy entirely different performance tiers, with no meaningful overlap in the database's scoring distribution.

The Verdict

The data supports a straightforward selection based on use case. The Intel Core i5-14400F is the appropriate choice for any desktop workload where multithreaded performance, single-thread responsiveness, or cache-bound tasks dominate. Its 10 cores, 16 threads, 20 MB of L3 cache, and 4.70 GHz boost clock deliver benchmark results that place it in the 83rd percentile of all CPUs. The 14400F also supports both DDR4 and DDR5 memory and includes ECC memory support, which broadens its applicability to workstation-style builds that require error-correcting memory.

The AMD Ryzen 3 3100U is the appropriate choice for a different scenario: a low-power mobile system with integrated graphics. Its 15 W TDP, Radeon Vega 8 graphics, and compact 2-core configuration suit notebooks where battery life and thermal limits outweigh peak performance. The 62nd percentile ranking and 6247 average score indicate that this chip sits far below the desktop part in every measured category, but its feature set, including an integrated GPU and 38.4 GB/s memory bandwidth, addresses a market segment the Intel part cannot serve at all. The Core i5-14400F has no integrated graphics, so it requires a discrete GPU for any display output.

Neither processor offers an unlocked multiplier, so overclocking is not a differentiating factor. The AMD part uses Socket FP5, while the Intel part uses Socket 1700, meaning platform choice is fixed by the motherboard. For a buyer building a new desktop system, the benchmark data points squarely at the Intel part. For a buyer selecting a mobile processor with integrated graphics, the AMD part remains the only one of the two that can function without an external GPU.

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core i5-14400F has an average benchmark score of 32279, while the AMD Ryzen 3 3100U has an average score of 6247.

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

A: In PassMark single-thread, the Intel Core i5-14400F scores 3701 versus 1592 for the AMD Ryzen 3 3100U, a delta of 57%.

Q: Does either processor include integrated graphics?

A: The AMD Ryzen 3 3100U includes Radeon Vega 8 graphics. The Intel Core i5-14400F has no integrated graphics, listed as N/A.

Q: What memory types does each processor support?

A: The AMD Ryzen 3 3100U supports DDR4 only. The Intel Core i5-14400F supports both DDR4 and DDR5, and it also supports ECC memory.

Q: What percentile rank does each processor hold in the database?

A: The Intel Core i5-14400F is in the 83rd percentile of all CPUs, while the AMD Ryzen 3 3100U is in the 62nd percentile.

Q: Which processor has more L3 cache?

A: The Intel Core i5-14400F has 20 MB of shared L3 cache, compared to 4 MB of shared L3 cache on the AMD Ryzen 3 3100U.

Specification Differences

| Specification | AMD Ryzen 3 3100U | Intel Core i5-14400F |

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

| Cores | 2 | 10 |

| Threads | 2 | 16 |

| Base clock | 1.90 GHz | 2.50 GHz |

| Boost clock | 3.20 GHz | 4.70 GHz |

| TDP | 15 W | 65 W |

| Socket | AMD Socket FP5 | Intel Socket 1700 |

| Architecture | Zen+ (Picasso) | Raptor Lake-R |

| Process node | 12 nm (GlobalFoundries) | 10 nm (Intel) |

| Die size | 210 mm² | 215 mm² |

| Transistors | 4,940 million | Not recorded |

| L1 cache | 96 KB per core | 80 KB per core |

| L2 cache | 512 KB per core | 1.25 MB per core |

| L3 cache | 4 MB shared | 20 MB shared |

| Memory support | DDR4 | DDR4, DDR5 |

| ECC memory | No | Yes |

| PCIe | Gen 3 | Gen 5, 16 lanes (CPU only) |

| Integrated graphics | Radeon Vega 8 | N/A |

| Market segment | Mobile | Desktop |

| Release date | 2026-05-31 | 2024-01-07 |

| Launch MSRP | Not recorded | $196 |

| Multiplier unlocked | No | No |