Intel Core i9-14900KF vs Intel Core Ultra 7 265KF Comparison

The Intel Core i9-14900KF and Intel Core Ultra 7 265KF are near-perfect equals in overall benchmark averages, with the i9-14900KF posting an average score of 79,245 against the Ultra 7's 79,240—a difference of just 0.006%. Both sit in the 97th percentile of all CPUs. Yet the data reveals a stark split in workload strengths: the i9-14900KF dominates integer math and data compression, while the Ultra 7 265KF wins the majority of tests, including every Cinebench round and all floating-point, physics, and encryption workloads. The choice between them is not about which is faster overall, but which set of optimizations matches your specific tasks.

FAQ

Q: Which processor has more cores and threads?

A: The i9-14900KF has 24 cores and 32 threads, while the Ultra 7 265KF has 20 cores and 20 threads. The i9 also features a higher boost clock of 6.00 GHz versus 5.50 GHz.

Q: Which CPU wins in Cinebench multicore tests?

A: The Ultra 7 265KF wins every Cinebench test, though by a slim margin. In Cinebench R23 multicore, it scores 50,049 versus the i9's 49,636, a 0.8% lead. The same 0.8% advantage appears in R15, R20, and single-core runs.

Q: Where does the i9-14900KF show its biggest advantage?

A: The i9-14900KF is 45.4% ahead in PassMark integer math (209,125 vs 143,811) and 17.3% ahead in data compression (785,831 vs 669,683). It also wins random string sorting by 7.9%.

Q: What is the Ultra 7 265KF's strongest win?

A: The Ultra 7 265KF leads by 53% in PassMark find prime numbers (491 vs 231), and by 20.2% in floating point math (190,482 vs 151,918). It also excels in extended instructions (54,627 vs 44,839, a 17.9% lead).

Q: Do both CPUs support the same memory types?

A: No. The i9-14900KF supports both DDR4 and DDR5, while the Ultra 7 265KF supports only DDR5. The Ultra 7 also has a higher memory bandwidth of 102.4 GB/s, while the i9's bandwidth is not listed.

Q: Are these processors unlocked for overclocking?

A: Yes, both have the multiplier unlocked. They also share the same 125 W TDP and are both active production desktop parts.

Architecture Differences

The two CPUs are built on fundamentally different architectures. The i9-14900KF uses Intel's Raptor Lake architecture on a 10 nm process node fabricated by Intel, while the Ultra 7 265KF uses Arrow Lake on a 3 nm process node from TSMC. The i9 has a die size of 257 mm²; the Ultra 7 is slightly smaller at 243 mm² and packs 17,800 million transistors, a figure not listed for the i9.

Cache structures diverge sharply. The i9-14900KF provides 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3. The Ultra 7 265KF offers 192 KB of L1 per core, 3 MB of L2 per core, but only 30 MB of shared L3. This means the Ultra 7 has more per-core cache but less aggregate L3.

The sockets differ: the i9 uses Intel Socket 1700, the Ultra 7 uses Intel Socket 1851. PCIe support also varies: the i9 provides Gen 5 with 16 CPU lanes, while the Ultra 7 provides Gen 5 with 20 CPU lanes. Memory support is another divider—the i9 supports DDR4 and DDR5, the Ultra 7 only DDR5. The i9 supports ECC memory, the Ultra 7 does not. Both have no integrated graphics and are unlocked for overclocking.

Where Each One Wins

The benchmark data paints a clear picture of workload-specific dominance. The i9-14900KF wins only three of the seventeen head-to-head tests, but those wins are decisive in their domains. It is 45.4% ahead in integer math, 17.3% ahead in data compression, and 7.9% ahead in random string sorting. These tasks are heavily dependent on raw integer throughput and large shared cache, which the i9's 24 cores and 36 MB L3 feed effectively.

The Ultra 7 265KF wins the remaining fourteen tests. It sweeps all six Cinebench benchmarks (R15, R20, R23, both single and multicore) with a consistent 0.8% edge. It also wins data encryption (48,426 vs 46,416, a 4.2% lead), extended instructions (54,627 vs 44,839, 17.9%), find prime numbers (491 vs 231, 53%), floating point math (190,482 vs 151,918, 20.2%), multithread (58,878 vs 58,405, 0.8%), physics (3,774 vs 3,159, 16.3%), and single-thread (4,910 vs 4,685, 4.6%). The Ultra 7's strengths lie in floating-point throughput, encryption, and scalar performance—areas where its 3 nm process and per-core cache layout deliver higher efficiency.

Specification Differences

| Specification | Intel Core i9-14900KF | Intel Core Ultra 7 265KF |

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

| Cores | 24 | 20 |

| Threads | 32 | 20 |

| Base Clock | 3.20 GHz | 3.90 GHz |

| Boost Clock | 6.00 GHz | 5.50 GHz |

| TDP | 125 W | 125 W |

| Socket | Intel Socket 1700 | Intel Socket 1851 |

| Architecture | Raptor Lake | Arrow Lake |

| Process Node | 10 nm | 3 nm |

| Foundry | Intel | TSMC |

| Transistors | Not listed | 17,800 million |

| Die Size | 257 mm² | 243 mm² |

| L1 Cache | 80 KB (per core) | 192 KB (per core) |

| L2 Cache | 2 MB (per core) | 3 MB (per core) |

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

| Memory Support | DDR4, DDR5 | DDR5 |

| Memory Bandwidth | Not listed | 102.4 GB/s |

| ECC Memory | Yes | No |

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

| Launch MSRP | $564 | $379 |

Head-to-Head Benchmarks

The biggest win for the i9-14900KF is in PassMark integer math, where it scores 209,125 against the Ultra 7's 143,811—a 45.4% advantage. This is the largest delta of any test. Data compression follows with a 17.3% lead (785,831 vs 669,683), and random string sorting adds a 7.9% edge (86,564 vs 80,235). These results suggest the i9 is far better suited to tasks like number crunching, compression algorithms, and sorting large datasets.

The Ultra 7 265KF's most dramatic win is find prime numbers: 491 vs 231, a 53% lead. Floating point math shows a 20.2% gap (190,482 vs 151,918), and extended instructions are 17.9% faster (54,627 vs 44,839). Physics tests favor the Ultra 7 by 16.3% (3,774 vs 3,159). In single-thread performance, the Ultra 7 is 4.6% ahead (4,910 vs 4,685), and data encryption is 4.2% better (48,426 vs 46,416). The Cinebench results are uniform: the Ultra 7 wins every round by 0.8%, from R15 multicore (5,044 vs 5,003) to R23 single-core (7,065 vs 7,007). The multithread PassMark score is also a 0.8% win for the Ultra 7 (58,878 vs 58,405).

These numbers show that while the i9-14900KF has a few enormous leads, the Ultra 7 265KF wins more tests overall and does so with a broader set of advantages. The average benchmark scores are nearly identical, but the distribution of performance is highly asymmetric.

The Verdict

The data supports a clear split: choose the Intel Core i9-14900KF if your workload is dominated by integer math, data compression, or sorting tasks. Its 45.4% lead in integer math and 17.3% lead in data compression are decisive. The i9 also offers ECC memory support and DDR4 compatibility, which may matter in specific environments.

Choose the Intel Core Ultra 7 265KF for almost everything else. It wins all Cinebench tests, floating point math, physics, encryption, extended instructions, prime number calculations, and single-thread performance. Its 53% lead in prime numbers and 20.2% lead in floating point are substantial. The Ultra 7 also has a lower launch MSRP of $379 versus $564, but that is a separate consideration. With a 20-core/20-thread design on a 3 nm process, it delivers higher per-core efficiency and a wider range of benchmark victories. Given that the average scores differ by only five points (79,245 vs 79,240), the Ultra 7 265KF is the more versatile choice for general computing, while the i9-14900KF remains a specialized tool for integer-heavy workloads.