Intel Core i9-12900F vs Intel Core i9-13900HX Comparison

Where Each One Wins

The Intel Core i9-12900F and Intel Core i9-13900HX occupy different corners of the performance envelope despite sharing a family name. The desktop part, the 12900F, is a specialist in single-threaded workloads and sustained all-core rendering, while the mobile 13900HX is a brute-force multi-threaded machine that wins the majority of head-to-head tests.

Looking at the recorded wins, the 13900HX takes 14 of the 17 benchmark comparisons, while the 12900F claims only 3. That is a dominant split, but the wins for the 12900F are not trivial. The desktop chip wins the Cinebench R15 single-core test by a massive 45.9% margin, and it wins Cinebench R23 both in single-core (by 108.8%) and multi-core (by 9%). Those three victories define its use case: if you need the absolute fastest single-threaded response, or if you run Cinebench R23 specifically for rendering workloads, the 12900F is the pick.

The 13900HX wins every other comparison, covering data compression, encryption, extended instructions, prime number finding, floating-point math, integer math, multithreaded PassMark, physics, random string sorting, and both PassMark single-thread variants. It also wins Cinebench R15 multi-core (by 31.8%) and Cinebench R20 both multi-core and single-core (by 13.9% each). The margin pattern is telling: the 13900HX leads by double digits in most multi-threaded tests, with a narrow 1.6% edge in PassMark single-thread. So the mobile chip is not just a multi-core monster; it is also slightly ahead in the most common single-threaded synthetic metric, even though the 12900F wins decisively in Cinebench's single-core tests.

The practical split is straightforward. For a desktop workstation where you mostly run Cinebench R23 or need peak per-core performance, the 12900F has a clear argument. For everything else, especially mixed workloads involving encryption, compression, physics simulation, or integer-heavy tasks, the 13900HX is the stronger performer. The data shows that the mobile part dominates the broader benchmark suite.

Architecture Differences

The two chips come from different generations and target different platforms, which explains much of the performance split. The 12900F is built on Alder Lake-S, the desktop variant of Intel's 12th Gen architecture, produced on Intel's 10 nm process. The 13900HX is Raptor Lake-HX, the mobile flagship of 13th Gen, also on a 10 nm process but with a larger die: 257 mm² versus 215 mm² for the 12900F.

Core counts differ substantially. The 12900F has 16 cores and 24 threads, while the 13900HX has 24 cores and 32 threads. That extra 8 cores and 8 threads is the primary driver of the multi-threaded wins. Cache configuration also diverges. The 12900F uses 1.25 MB of L2 per core with 30 MB of shared L3, whereas the 13900HX has 2 MB of L2 per core and 36 MB of shared L3. Both use 80 KB of L1 per core.

Memory support is identical on paper: both support DDR4 and DDR5 in dual-channel mode, and both support ECC memory. The 12900F has a memory bandwidth figure of 76.8 GB/s recorded, while the 13900HX has no bandwidth number in the database. PCIe lanes differ: the 12900F has Gen 5 with 16 CPU lanes, while the 13900HX has Gen 5 with 20 CPU lanes.

The sockets tell the platform story. The 12900F uses Intel Socket 1700, the standard desktop LGA socket for 12th Gen, and it has no integrated graphics. The 13900HX uses Intel BGA 1964, a soldered mobile package, and includes UHD Graphics 770. The 12900F has a base clock of 2.40 GHz and a boost of 5.10 GHz, while the 13900HX has a lower base of 2.20 GHz but a higher boost of 5.40 GHz. TDP differs: 65 W for the desktop part versus 55 W for the mobile part.

Both chips have unlocked multipliers, and both are listed as active in production. The release dates are exactly one year apart: January 3, 2022 for the 12900F, and January 3, 2023 for the 13900HX. The launch MSRP for the 12900F was $494, and for the 13900HX it was $668.

Head-to-Head Benchmarks

The biggest win for the 12900F is Cinebench R23 single-core, where it scores 4292 against 2056 for the 13900HX, a 108.8% advantage. That is not a small margin; it is a doubling of performance. The same test in Cinebench R15 shows a 45.9% lead (432 vs 296). These results are surprising given that the 13900HX has a higher boost clock of 5.40 GHz versus 5.10 GHz. The data suggests that the desktop architecture sustains single-threaded performance better, likely due to power delivery and thermal headroom.

The 13900HX fights back in Cinebench R15 multi-core with a 4494.5 score versus 3064, a 31.8% lead. In Cinebench R20 multi-core, it wins 14836 to 12770, a 13.9% margin. But in Cinebench R23 multi-core, the 12900F flips the result, scoring 30405 against 27900, a 9% win. This is an interesting reversal: the 13900HX wins R15 and R20 multi-core, but loses R23 multi-core. The likely explanation is that R23 is a longer-running workload, and the mobile chip may throttle over time, while the desktop part sustains its output.

Outside of Cinebench, the 13900HX is consistently ahead. PassMark data compression: 531224 vs 451402, a 15% lead. Data encryption: 32130 vs 25251, a 21.4% lead. Extended instructions: 30550 vs 28265, a 7.5% lead. Prime number finding: 190 vs 127, a 33.2% lead. Floating-point math: 110470 vs 96452, a 12.7% lead. Integer math: 156175 vs 129504, a 17.1% lead. Multithreaded PassMark: 43062 vs 35912, a 16.6% lead. Physics: 2645 vs 1842, a 30.4% lead. Random string sorting: 59199 vs 48477, an 18.1% lead.

The closest margin is PassMark single-thread, where the 13900HX edges ahead by only 1.6% (4081 vs 4017). That near-tie reinforces the narrative: in everyday single-threaded tasks, the two are essentially equivalent, but in sustained single-threaded Cinebench loads, the desktop part is dramatically faster.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core i9-13900HX has 24 cores and 32 threads, while the Intel Core i9-12900F has 16 cores and 24 threads.

Q: Why does the 12900F win Cinebench R23 single-core by such a large margin?

A: The 12900F scores 4292 in that test versus 2056 for the 13900HX, a 108.8% advantage. This likely stems from the desktop platform's ability to sustain high single-core clocks without thermal or power constraints.

Q: Does the 13900HX have integrated graphics?

A: Yes, the 13900HX includes UHD Graphics 770. The 12900F has no integrated graphics.

Q: Which chip has more L3 cache?

A: The 13900HX has 36 MB of shared L3 cache, while the 12900F has 30 MB. The 13900HX also has 2 MB of L2 per core versus 1.25 MB per core on the 12900F.

Q: Are both processors unlocked for overclocking?

A: Yes, both have unlocked multipliers. The 12900F is a desktop part on Socket 1700, while the 13900HX is a mobile part on BGA 1964.

Q: What is the memory bandwidth of the 12900F?

A: The 12900F has a recorded memory bandwidth of 76.8 GB/s. The database does not list a bandwidth figure for the 13900HX.

Specification Differences

| Specification | Intel Core i9-12900F | Intel Core i9-13900HX |

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

| Cores | 16 | 24 |

| Threads | 24 | 32 |

| Base Clock | 2.40 GHz | 2.20 GHz |

| Boost Clock | 5.10 GHz | 5.40 GHz |

| TDP | 65 W | 55 W |

| Socket | Intel Socket 1700 | Intel BGA 1964 |

| Architecture | Alder Lake | Raptor Lake |

| Die Size | 215 mm² | 257 mm² |

| L2 Cache | 1.25 MB (per core) | 2 MB (per core) |

| L3 Cache | 30 MB (shared) | 36 MB (shared) |

| Memory Bandwidth | 76.8 GB/s | Not listed |

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

| Integrated Graphics | None | UHD Graphics 770 |

| Market Segment | Desktop | Mobile |

| Release Date | January 3, 2022 | January 3, 2023 |

| Launch MSRP | $494 | $668 |

The Verdict

The data paints a clear picture for different buyers. If you are building a desktop system and care about single-threaded performance in Cinebench workloads, the 12900F is the right choice. Its 108.8% lead in Cinebench R23 single-core is unmatched, and it also wins multi-core R23 by 9%. For a workstation that runs that specific benchmark, or for tasks that rely on peak per-core speed, the 12900F is the stronger part.

If your workload is broader, the 13900HX is the better performer. It wins 14 of 17 head-to-head tests, with double-digit margins in encryption, compression, integer math, physics, and prime number finding. The extra 8 cores and 8 threads, plus larger caches, make it the superior multi-threaded processor in most real-world scenarios. The 1.6% edge in PassMark single-thread also shows it is not a slouch in lighter tasks.

The 13900HX is a mobile chip, so the comparison is not entirely fair on platform terms. But the benchmark results stand: for anyone who needs a laptop CPU that outperforms a desktop flagship in the majority of tests, the 13900HX delivers. For a desktop builder who values Cinebench R23 results and single-threaded responsiveness above all, the 12900F remains a compelling option. The choice comes down to whether you prioritize the broad multi-threaded suite or the specific Cinebench single-core and R23 multi-core wins.