Intel Core i9-14900KF vs Intel Core Ultra 9 285 Comparison

The Intel Core i9-14900KF and the Intel Core Ultra 9 285 are both 24-core desktop processors occupying the top tier of Intel’s lineup, yet the benchmark data reveals two distinctly different performance profiles. The i9-14900KF wins 10 of the 17 recorded head-to-head comparisons, while the Ultra 9 285 takes 7. The overall average benchmark score for the i9-14900KF is 79,371, which places it slightly above the Ultra 9 285’s 75,488. Both processors sit at the 95th percentile among all CPUs in the database, indicating that either choice places a system in the upper echelon of available hardware.

The Verdict

The recorded data points to a clear split in suitability. The Intel Core i9-14900KF is the processor to select when the workload involves heavy multi-threaded integer operations, data compression, or random string sorting. It leads the Ultra 9 285 by 26.8% in PassMark integer math and by 30.5% in data compression, which are substantial margins for productivity tasks that rely on these operations. Additionally, it edges ahead in every Cinebench test, including a 0.9% lead in both Cinebench R23 multi-core and single-core, making it the safer choice for rendering workloads where those specific benchmarks are the reference standard.

The Intel Core Ultra 9 285 is the better pick for tasks that stress floating-point arithmetic, prime number calculation, and physics simulations. It leads by 22.1% in floating-point math and by 49.7% in finding prime numbers, a massive advantage that indicates a fundamentally different execution efficiency in those specific instruction patterns. It also wins in single-threaded PassMark tests by 4%, suggesting that for lightly threaded applications that do not rely on the Cinebench suite, the Ultra 9 285 provides a smoother experience. For a user whose software is dominated by encryption, extended instruction sets, or physics calculations, the Ultra 9 285 is the data-backed choice.

Where Each One Wins

The Intel Core i9-14900KF demonstrates its strength in classic multi-core throughput. It wins all six Cinebench R15, R20, and R23 tests, including both multi-core and single-core variants, by a consistent 0.9% margin. In PassMark tests, it dominates in data compression (785,831 versus 602,121), integer math (209,125 versus 164,869), and multithreaded performance (58,405 versus 56,602). It also wins random string sorting by 17.5% (86,564 versus 73,651). These results indicate a processor optimized for traditional desktop workloads where high core counts and high clock speeds translate directly into faster completion times.

The Intel Core Ultra 9 285 wins in areas that reflect architectural efficiency rather than raw clock speed. Its PassMark floating-point math score of 194,988 is dramatically higher than the i9-14900KF’s 151,918, a 22.1% advantage. The prime number calculation score of 459 versus 231 is a 49.7% lead, showing a superior ability to handle iterative integer loops. Physics scores also favor the Ultra 9 285 by 12.2% (3,598 versus 3,159). Single-threaded PassMark performance goes to the Ultra 9 285 at 4,881 versus 4,685, a 4% win. These wins suggest that for scientific computing, financial modeling, or physics-based rendering, the Ultra 9 285 is the more capable processor.

Architecture Differences

The two processors are built on different architectural foundations. The Intel Core i9-14900KF uses the Raptor Lake architecture on a 10 nm process node fabricated by Intel, while the Intel Core Ultra 9 285 uses the Arrow Lake architecture on a 3 nm process node fabricated by TSMC. This process node difference is significant, as the Ultra 9 285 packs 17,800 million transistors into a 243 mm² die, while the i9-14900KF’s die size is 257 mm² with no transistor count listed.

The core configuration differs in threading. Both have 24 cores, but the i9-14900KF supports 32 threads while the Ultra 9 285 supports 24 threads, meaning the i9-14900KF has hyper-threading enabled on some cores while the Ultra 9 285 does not. Cache hierarchies also diverge: the i9-14900KF has 80 KB of L1 cache per core and 2 MB of L2 cache per core, while the Ultra 9 285 has 192 KB of L1 and 3 MB of L2 per core. Both share 36 MB of L3 cache. The larger per-core caches on the Ultra 9 285 likely contribute to its wins in single-threaded PassMark tests.

Memory support differs as well. The i9-14900KF supports both DDR4 and DDR5 memory, while the Ultra 9 285 supports only DDR5. The Ultra 9 285 has a recorded memory bandwidth of 102.4 GB/s, while the i9-14900KF has no bandwidth figure listed. PCIe lane counts also differ, with the i9-14900KF offering 16 CPU lanes of Gen 5 PCIe and the Ultra 9 285 offering 20 lanes. The Ultra 9 285 includes integrated Arc Xe-LPG Graphics with 64 execution units, while the i9-14900KF has no integrated graphics listed.

FAQ

Q: Which processor has a higher boost clock?

A: The Intel Core i9-14900KF has a boost clock of 6.00 GHz, while the Intel Core Ultra 9 285 has a boost clock of 5.60 GHz.

Q: Does the Ultra 9 285 support DDR4 memory?

A: No, the data shows the Ultra 9 285 supports only DDR5 memory, while the i9-14900KF supports both DDR4 and DDR5.

Q: Which processor has more PCIe lanes?

A: The Intel Core Ultra 9 285 has 20 CPU-only Gen 5 lanes, while the Intel Core i9-14900KF has 16 CPU-only Gen 5 lanes.

Q: Are both processors in the 95th percentile of all CPUs?

A: Yes, both the i9-14900KF and the Ultra 9 285 are recorded at the 95th percentile among all CPUs in the database.

Q: What is the thermal design power difference?

A: The i9-14900KF has a TDP of 125 watts, while the Ultra 9 285 has a TDP of 65 watts.

Q: Which processor wins in PassMark single-threaded performance?

A: The Intel Core Ultra 9 285 wins, scoring 4,881 versus the i9-14900KF’s 4,685, a delta of 4%.

Head-to-Head Benchmarks

The Cinebench results show a remarkably consistent pattern. Across all six tests, the i9-14900KF wins by exactly 0.9%. In Cinebench R23 multi-core, the i9-14900KF scores 49,370 versus 48,945 for the Ultra 9 285. In Cinebench R23 single-core, the scores are 6,969 and 6,909, respectively. This consistency suggests that the i9-14900KF’s higher boost clock of 6.00 GHz provides a small but uniform advantage in this benchmark suite.

The PassMark suite reveals the largest divergences. The i9-14900KF’s data compression score of 785,831 is 30.5% higher than the Ultra 9 285’s 602,121, representing the single biggest win for the older processor. Integer math shows a 26.8% lead for the i9-14900KF (209,125 versus 164,869). Random string sorting goes to the i9-14900KF by 17.5% (86,564 versus 73,651). These are all multi-threaded workloads that benefit from the i9-14900KF’s 32 threads versus the Ultra 9 285’s 24 threads.

The Ultra 9 285’s wins are concentrated in math-intensive and physics-based tests. The prime number finding test shows a 49.7% advantage for the Ultra 9 285 (459 versus 231), which is the largest delta in either direction. Floating-point math goes to the Ultra 9 285 by 22.1% (194,988 versus 151,918). Physics scores favor the Ultra 9 285 by 12.2% (3,598 versus 3,159). The Ultra 9 285 also wins in encryption by 1.1% (46,949 versus 46,416) and in extended instructions by 1.1% (45,357 versus 44,839). Single-threaded PassMark goes to the Ultra 9 285 by 4% (4,881 versus 4,685).

Specification Differences

The two processors differ in several key specification fields. The i9-14900KF has a base clock of 3.20 GHz and a boost clock of 6.00 GHz, while the Ultra 9 285 has a base clock of 2.50 GHz and a boost clock of 5.60 GHz. The i9-14900KF has a TDP of 125 watts versus the Ultra 9 285’s 65 watts. The i9-14900KF uses the Intel Socket 1700, while the Ultra 9 285 uses Intel Socket 1851.

The i9-14900KF is unlocked for overclocking, while the Ultra 9 285 is not. The i9-14900KF supports both DDR4 and DDR5 memory, while the Ultra 9 285 supports only DDR5. The Ultra 9 285 has 20 Gen 5 PCIe lanes compared to 16 on the i9-14900KF. The Ultra 9 285 includes integrated Arc Xe-LPG Graphics with 64 execution units, while the i9-14900KF has no integrated graphics listed. The Ultra 9 285 has a recorded memory bandwidth of 102.4 GB/s, while no such figure is provided for the i9-14900KF. The i9-14900KF was released on October 16, 2023, with a launch MSRP of $564, while the Ultra 9 285 was released on December 31, 2024, with a launch MSRP of $579.