AMD Ryzen 5 8400F vs Intel Core i5-13400F Comparison

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core i5-13400F has 10 cores and 16 threads, while the AMD Ryzen 5 8400F has 6 cores and 12 threads. This gives the Intel part a 4-thread advantage in heavily threaded workloads.

Q: What is the difference in single-thread benchmark scores?

A: In 3DMark single-thread, the Intel part scores 960 against 951 for the AMD, a 0.9% lead. In PassMark single-thread, the AMD wins at 3685 versus 3634, a 1.4% edge. The two are nearly identical in raw single-core speed.

Q: How large is the cache difference?

A: The Intel Core i5-13400F features 20 MB of shared L3 cache, while the AMD Ryzen 5 8400F has 16 MB of shared L3. Per-core L2 is 1.25 MB on Intel versus 1 MB on AMD, and per-core L1 is 80 KB versus 64 KB.

Q: Which processor has a higher boost clock?

A: The AMD Ryzen 5 8400F reaches a boost clock of 4.70 GHz, while the Intel Core i5-13400F tops out at 4.60 GHz. The AMD part also has a much higher base clock at 4.20 GHz versus 2.50 GHz.

Q: What is the memory bandwidth difference?

A: The AMD Ryzen 5 8400F supports DDR5 with a recorded memory bandwidth of 83.2 GB/s. The Intel Core i5-13400F also supports DDR5 (and DDR4), but the database does not list a bandwidth figure for it.

Q: How many benchmark wins does each processor claim?

A: Out of 23 head-to-head benchmark tests, the Intel Core i5-13400F wins 16 tests, while the AMD Ryzen 5 8400F wins 7 tests.

Architecture Differences

The Intel Core i5-13400F is built on Intel's Raptor Lake architecture, using a 10 nm process node at Intel's own foundry. The chip uses a hybrid core design with 10 total cores, which includes performance and efficiency core types, enabling 16 threads. The die size is 215 mm², and the processor uses the Intel Socket 1700 platform. It supports both DDR4 and DDR5 memory in a dual-channel configuration, and it provides PCIe Gen 5 with 16 lanes from the CPU. The integrated graphics are not present in this F-series part.

The AMD Ryzen 5 8400F uses the Zen 4 architecture under the Phoenix codename, manufactured on a 4 nm process at TSMC. This is a monolithic 6-core, 12-thread design with a die size of 178 mm² and 25,000 million transistors. It uses the AMD Socket AM5 platform and supports only DDR5 memory, also dual-channel, with a recorded memory bandwidth of 83.2 GB/s. The PCIe interface is Gen 4 with 20 lanes from the CPU, and there is no integrated graphics. The AMD part has an unlocked multiplier, while the Intel part is locked.

The cache hierarchy differs notably. Intel provides 80 KB of L1 per core, 1.25 MB of L2 per core, and 20 MB of shared L3. AMD provides 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. The larger Intel cache pool is consistent with its higher core count. The process node advantage goes to AMD at 4 nm versus 10 nm, which explains the higher base clock of 4.20 GHz compared to 2.50 GHz, despite the smaller die and lower transistor count.

Both processors are marked as Active in production, target the Desktop segment, and have a TDP of 65 watts. Neither supports ECC memory.

Head-to-Head Benchmarks

The Intel Core i5-13400F dominates in heavily threaded workloads. In 3DMark 16-thread tests, it scores 7314 against 6091, a 20.1% lead. The 3DMark max-threads result is similarly lopsided at 7307 versus 6165, an 18.5% advantage. In Cinebench R23 multicore, Intel scores 22604 versus 20851, an 8.4% gap. Cinebench R15 multicore shows the same 8.4% delta at 2278 versus 2101, and Cinebench R20 multicore narrows to 1.5% at 8892 versus 8757.

The floating-point math test is the largest single win for Intel. PassMark floating point math shows 60539 for Intel versus 46217 for AMD, a 31% lead. Integer math also goes to Intel at 79942 versus 74021, an 8% edge. PassMark multithread scores 25032 against 24389, a 2.6% win for Intel. PassMark physics shows 1437 versus 1332, a 7.9% advantage. Data compression favors Intel at 311364 versus 288158, an 8.1% delta.

The AMD Ryzen 5 8400F wins in several specific tests. PassMark extended instructions show a 10.5% lead for AMD at 22175 versus 19847. Random string sorting goes to AMD at 34604 versus 32076, a 7.3% win. Find prime numbers favors AMD at 89 versus 83, a 6.7% edge. Data encryption is nearly tied, with AMD at 16646 versus 16608, a 0.2% margin. PassMark single-thread gives AMD a 1.4% win at 3685 versus 3634. In 3DMark 4-thread, AMD wins 3563 versus 3459, a 2.9% advantage.

The 8-thread test is a middle ground: Intel wins 5591 versus 5275, a 6% lead. The 2-thread test is extremely close, with Intel at 1880 versus 1874, only 0.3% apart. Single-thread tests across both suites are within 1.4% either way, indicating that raw per-core speed is effectively a tie.

Specification Differences

| Specification | Intel Core i5-13400F | AMD Ryzen 5 8400F |

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

| Cores | 10 | 6 |

| Threads | 16 | 12 |

| Base Clock | 2.50 GHz | 4.20 GHz |

| Boost Clock | 4.60 GHz | 4.70 GHz |

| Socket | Intel Socket 1700 | AMD Socket AM5 |

| Architecture | Raptor Lake | Zen 4 |

| Process Node | 10 nm | 4 nm |

| Foundry | Intel | TSMC |

| Die Size | 215 mm² | 178 mm² |

| Transistors | Not listed | 25,000 million |

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

| L2 Cache | 1.25 MB (per core) | 1 MB (per core) |

| L3 Cache | 20 MB (shared) | 16 MB (shared) |

| Memory Support | DDR4, DDR5 | DDR5 |

| Memory Bandwidth | Not listed | 83.2 GB/s |

| PCIe | Gen 5, 16 Lanes (CPU only) | Gen 4, 20 Lanes (CPU only) |

| Integrated Graphics | None | N/A |

| Multiplier | Locked | Unlocked |

| Part Number | SRMBGSRMBN | 100-000001591 |

| Release Date | 2023-01-03 | 2024-03-31 |

Both processors share a 65 W TDP, dual-channel memory bus, Desktop market segment, Active production status, and lack of ECC support.

The Verdict

The data points to a clear overall winner in the Intel Core i5-13400F. It wins 16 of 23 benchmark comparisons, and its victories in heavily threaded tests are decisive. The 20.1% lead in 3DMark 16-thread and the 31% lead in floating-point math demonstrate that the 4 extra threads and 4 extra cores provide a substantial scaling advantage in parallel workloads. The Cinebench R23 multicore result, 22604 versus 20851, confirms this pattern in a widely used rendering benchmark.

The AMD Ryzen 5 8400F is not without merit. It wins in extended instructions, random string sorting, prime number finding, and single-thread PassMark, though by modest margins. The 4 nm process and higher clocks (4.20 GHz base, 4.70 GHz boost) give it a slight edge in certain integer and string operations. For workloads that rely on those specific instruction paths, the AMD part is competitive.

However, the overall average benchmark score tells the same story. The Intel part records an average benchmark score of 25292, while the AMD part records 25005. Both processors sit at the 77th percentile among all CPUs in the database, so they are in the same performance tier. The Intel chip's nearest rivals include the AMD Ryzen 9 6900HS at a 0% delta and the Intel Core 5 120 at -0.3%. The AMD chip's nearest rivals include the AMD Ryzen 5 7500F at 0.2% and the Intel Core i7-13620H at 0.4%.

For users who prioritize multi-threaded performance in rendering, compilation, or content creation, the Intel Core i5-13400F is the stronger choice based on benchmark evidence. The 8.4% Cinebench R23 lead is consistent across R15 and R20 multicore tests, with identical 8.4% deltas.

Where Each One Wins

The Intel Core i5-13400F wins in all 3DMark tests except the 4-thread test, including the 16-thread and max-thread tests by 20.1% and 18.5% respectively. It also wins every Cinebench multicore and single-core test, with deltas ranging from 1.5% in R20 to 8.4% in R15 and R23. In PassMark, Intel wins floating-point math (31% lead), integer math (8%), multithread (2.6%), physics (7.9%), and data compression (8.1%). These results make it the preferred processor for floating-point-heavy scientific workloads, physics simulations, and any task that scales with thread count.

The AMD Ryzen 5 8400F wins the 3DMark 4-thread test by 2.9%, showing an advantage in lightly threaded gaming scenarios. It also wins PassMark extended instructions by 10.5%, which covers AVX-512 and other advanced instruction sets, making it stronger for vectorized compute tasks. Random string sorting goes to AMD by 7.3%, indicating an edge in sorting and data manipulation workloads. Prime number finding favors AMD by 6.7%. Data encryption is essentially a tie at 0.2%. The PassMark single-thread win of 1.4% suggests a slight advantage in purely single-threaded applications.

The practical split is this: choose the Intel Core i5-13400F for multi-threaded rendering, floating-point math, and general productivity where core count matters. Choose the AMD Ryzen 5 8400F for workloads that use extended instruction sets, require fast string sorting, or run lightly threaded applications where its higher boost clock and unlocked multiplier offer flexibility. Both processors land in the same percentile bracket, so the decision rests on the specific benchmark profile of the target workload.