Intel Core i5-13400T vs Intel Core i9-10900KF Comparison

# Intel Core i9-10900KF vs Intel Core i5-13400T

The Intel Core i9-10900KF is a 10th Gen Comet Lake desktop processor with 10 cores and 20 threads, while the Intel Core i5-13400T is a 13th Gen Raptor Lake desktop chip with 10 cores and 16 threads. Despite the i9's older architecture and 125W TDP versus the i5's 35W TDP, the i9 wins 7 of 8 head-to-head benchmarks, though the i5 takes a decisive single-core Geekbench victory and offers newer platform features. Both CPUs sit at the 60th percentile among all processors, with average benchmark scores of 5316 for the i9 and 5210 for the i5 — a gap of just over 2%.

FAQ

Q: Which processor has more cores and threads?

A: Both have 10 cores, but the i9-10900KF has 20 threads while the i5-13400T has 16 threads. The i9's Hyper-Threading capability gives it 4 additional threads for heavily parallel workloads.

Q: What is the single biggest performance gap in the head-to-head results?

A: The i9-10900KF wins the Cinebench R15 multicore test by 10.8%, scoring 1901 versus the i5-13400T's 1716. This same 10.8% delta repeats across all Cinebench R15, R20, and R23 tests, both single-core and multi-core.

Q: Does the i5-13400T win any benchmark?

A: Yes, the i5-13400T wins Geekbench single-core with a score of 1899 versus the i9-10900KF's 1744, a margin of 8.2% in the i5's favor.

Q: What memory types does each processor support?

A: The i9-10900KF supports DDR4 only, while the i5-13400T supports both DDR4 and DDR5. The i9 has a memory bandwidth of 46.9 GB/s, while the i5's memory bandwidth is not specified.

Q: Are these processors unlocked for overclocking?

A: Yes, the i9-10900KF has an unlocked multiplier. The i5-13400T does not have an unlocked multiplier.

Q: Do either of these CPUs include integrated graphics?

A: The i9-10900KF has no integrated graphics. The i5-13400T includes UHD Graphics 730.

Where Each One Wins

The i9-10900KF dominates multi-threaded productivity workloads. It wins every Cinebench test — R15, R20, and R23 — in both single-core and multi-core variants by a consistent 10.8% margin. In Geekbench multicore, the i9 also comes out ahead, scoring 10733 versus the i5's 10227, a 4.9% advantage. This makes the i9 the pick for rendering, video encoding, compilation, and any task that scales across many threads. The 20-thread configuration over the i5's 16 threads gives it a real edge in heavily parallel workloads.

The i5-13400T wins exactly one test: Geekbench single-core, with a score of 1899 versus 1744 — an 8.2% swing in its favor. This result suggests the newer Raptor Lake architecture has better single-threaded efficiency in certain workloads, even at a dramatically lower 35W TDP versus the i9's 125W. For lightly threaded applications that favor Geekbench's specific workload mix, the i5 delivers better per-core performance.

The i5 also wins on platform features that matter for system builders: PCIe Gen 5 with 20 lanes versus the i9's PCIe Gen 3 with 16 lanes, plus support for DDR5 memory alongside DDR4. The i5's 10nm process node (versus 14nm for the i9) and 215 mm² die size (versus unspecified for the i9) indicate a more modern manufacturing process. The i5 is also an active production part with integrated UHD Graphics 730, while the i9 is end-of-life with no iGPU.

Architecture Differences

The two CPUs come from different architectural eras. The i9-10900KF uses Comet Lake, built on Intel's 14nm process, while the i5-13400T uses Raptor Lake on a 10nm process. This generational gap shows up in the cache hierarchy: the i9 has 64 KB L1 and 256 KB L2 per core, while the i5 has 80 KB L1 and 1.25 MB L2 per core. Both share 20 MB of L3 cache.

The i5's larger per-core L2 cache — roughly 4.9 times more per core — helps explain its Geekbench single-core win. The i9 compensates with a higher boost clock of 5.30 GHz versus the i5's 4.40 GHz, and a base clock of 3.70 GHz versus the i5's 1300.00 MHz (1.3 GHz). The i9's clock speed advantage is substantial, particularly for bursty single-threaded work that isn't captured by Geekbench's specific test pattern.

The i9 is a 125W part, the i5 is 35W. This reflects the i9's older, less power-efficient design and its higher clock speeds. The i9 uses Socket 1200, while the i5 uses Socket 1700 — these are not interchangeable platforms. The i9 has 16 PCIe Gen 3 lanes from the CPU; the i5 has 20 PCIe Gen 5 lanes. Memory support differs as well: the i9 is DDR4 dual-channel only, while the i5 supports both DDR4 and DDR5 dual-channel.

The i9 lacks integrated graphics entirely, making it a "KF" part that requires a discrete GPU. The i5 includes UHD Graphics 730, which provides basic display output without a dedicated graphics card. The i9 has an unlocked multiplier for overclocking; the i5 is locked. Production status also differs: the i9 is end-of-life, while the i5 is active and current.

Specification Differences

| Specification | Intel Core i9-10900KF | Intel Core i5-13400T |

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

| Threads | 20 | 16 |

| Base Clock | 3.70 GHz | 1300.00 MHz |

| Boost Clock | 5.30 GHz | 4.40 GHz |

| TDP | 125W | 35W |

| Socket | Intel Socket 1200 | Intel Socket 1700 |

| Architecture | Comet Lake | Raptor Lake |

| Process Node | 14 nm | 10 nm |

| Die Size | Not specified | 215 mm² |

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

| L2 Cache | 256 KB (per core) | 1.25 MB (per core) |

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

| Memory Support | DDR4 | DDR4, DDR5 |

| Memory Bandwidth | 46.9 GB/s | Not specified |

| PCIe | Gen 3, 16 Lanes | Gen 5, 20 Lanes |

| Integrated Graphics | None | UHD Graphics 730 |

| Production Status | End-of-life | Active |

| Launch MSRP | $509 | $221 |

| Multiplier Unlocked | Yes | No |

Head-to-Head Benchmarks

The most striking pattern in the head-to-head data is uniformity. The i9-10900KF wins all six Cinebench tests — R15, R20, and R23, each in both single-core and multi-core — by exactly 10.8%. This suggests the performance gap is structural rather than workload-specific: the i9's higher clock speeds and extra 4 threads deliver a consistent advantage across rendering workloads. In Cinebench R23 multicore, the i9 scores 18867 versus 17029; in R23 single-core, it scores 2663 versus 2404. The i9 also wins Geekbench multicore, but by a smaller 4.9% margin (10733 versus 10227), indicating that the extra threads matter less in this workload mix.

The i5-13400T's single win is Geekbench single-core, where it scores 1899 versus 1744 — an 8.2% advantage. This is a meaningful result because it shows that the newer Raptor Lake architecture, despite lower clock speeds and a 35W TDP, has superior per-core efficiency for this particular test. The i5's larger L2 cache and newer process node likely contribute to this result.

The overall wins tally is 7-1 in favor of the i9-10900KF. However, the average benchmark scores tell a closer story: the i9's average is 5316, while the i5's is 5210. The i9's nearest rival is the AMD EPYC 7281 at 0% delta, while the i5's nearest rival is the Intel Xeon E-2378G at 0.2%. Both CPUs sit at the 60th percentile of all CPUs, meaning they perform similarly in aggregate despite the i9's head-to-head benchmark dominance.

The Verdict

The data presents a clear trade-off. The i9-10900KF is the faster processor in 7 of 8 benchmarks, with a consistent 10.8% advantage across all Cinebench tests and a 4.9% edge in Geekbench multicore. If raw rendering performance and multi-threaded throughput are the priority, the i9 is the pick. Its 20 threads and 5.30 GHz boost clock deliver real, measurable gains in CPU-bound workloads.

The i5-13400T wins only Geekbench single-core, but that win is substantial at 8.2%. More importantly, the i5 offers modern platform features that the i9 cannot match: PCIe Gen 5 with 20 lanes, DDR5 memory support, integrated graphics, and a 35W TDP that makes it dramatically more power-efficient. The i5 is also an active production part, while the i9 is end-of-life.

For a new build, the i5-13400T makes more sense practically: it provides the newer socket, faster I/O, and lower power draw, with only a modest performance deficit in most tests. For someone already on Socket 1200 with a heavy multi-threaded workload, the i9-10900KF is the stronger performer. The i9's 10.8% Cinebench lead and 4.9% Geekbench multicore lead are not trivial, but the i5's 8.2% single-core win and platform advantages make it the more future-proof choice. The data does not support calling either a clear winner — it supports matching the CPU to the platform and workload priorities.