Intel Core i7-14700F vs Intel Core Ultra 5 245KF Comparison

Where Each One Wins

The benchmark split between the Intel Core Ultra 5 245KF and the Intel Core i7-14700F is decisively lopsided, with the Ultra 5 taking 14 of 17 head-to-head comparisons. The core of the Ultra 5's dominance lies in single-threaded and lightly-threaded workloads. Across the entire Cinebench suite, from R15 through R23, the Ultra 5 wins both multi-core and single-core runs by a consistent 4.3-4.4%. This consistency suggests a fundamental architectural advantage rather than a workload-specific quirk.

The i7-14700F's three wins are all in PassMark's specialized integer-heavy or memory-latency-sensitive tests. The most dramatic of these is integer math, where the i7 posts a 155,808 score against the Ultra 5's 98,854 — a 36.6% advantage. The i7 also wins data compression by 9% (505,885 vs 460,123) and random string sorting by a narrow 1.3% (55,918 vs 55,206). These are classic strengths of a high-core-count chip with abundant thread-level parallelism; the i7's 28 threads simply overwhelm the Ultra 5's 14 in workloads that scale well with raw thread count.

The Ultra 5's wins are not just numerous but often massive. In PassMark's find prime numbers test, the Ultra 5 scores 416 versus the i7's 176 — a 136.4% blowout. Extended instructions show a 32.7% gap (37,912 vs 28,564), floating point math a 22.9% gap (131,546 vs 107,005), and physics a 22.1% gap (2,998 vs 2,455). Data encryption also favors the Ultra 5 by 10.7% (33,381 vs 30,144). Single-thread performance is a clear 10.8% win (4,715 vs 4,257), which is a massive margin for a single-core test.

What this means in practice: the Ultra 5 245KF is the better all-rounder, particularly for workloads that rely on per-core efficiency, branch prediction, or SIMD-style floating-point operations. The i7-14700F is narrowly specialized — it wins only where massive thread counts can be fed with integer operations and memory-bound sorting.

Architecture Differences

The two processors come from fundamentally different design eras. The Ultra 5 245KF uses Arrow Lake-S architecture, built on a 3 nm process at TSMC, with a die size of 243 mm² and 17,800 million transistors. The i7-14700F uses Raptor Lake-R, built on Intel's 10 nm process, with a die size of 257 mm² and no transistor count listed in the data. The process node difference alone explains much of the efficiency and clock behavior.

Core configuration differs sharply. The Ultra 5 has 14 cores and 14 threads — meaning no hyperthreading — while the i7 has 20 cores and 28 threads. The Ultra 5's base clock is 4.20 GHz and boost is 5.20 GHz; the i7's base is much lower at 2.10 GHz but boosts higher to 5.40 GHz. The i7 relies on its thread count to compensate for a low base clock, while the Ultra 5 runs faster at idle and sustains high clocks across fewer threads.

Cache hierarchies also diverge. The Ultra 5 has 192 KB L1 per core and 3 MB L2 per core, with 24 MB shared L3. The i7 has 80 KB L1 per core and 2 MB L2 per core, but a larger 33 MB shared L3. The Ultra 5's larger per-core caches help single-thread performance, while the i7's larger L3 pool benefits multi-threaded data sharing.

Memory support is another split. The Ultra 5 supports only DDR5, dual-channel, with a listed memory bandwidth of 102.4 GB/s. The i7 supports both DDR4 and DDR5, dual-channel, with no bandwidth figure provided. The i7 also supports ECC memory; the Ultra 5 does not. PCIe lanes differ: the Ultra 5 offers Gen 5 with 20 lanes (CPU only), while the i7 offers Gen 5 with 16 lanes (CPU only). Sockets are incompatible: LGA 1851 for the Ultra 5, LGA 1700 for the i7.

The multiplier is unlocked on the Ultra 5 but locked on the i7, making the Ultra 5 the overclocking candidate. Both have no integrated graphics and target the desktop segment. The Ultra 5's release date is 2024-10-23, the i7's is 2024-01-07.

FAQ

Q: Why does the Ultra 5 245KF win so many more benchmarks despite having fewer cores and threads?

A: The Ultra 5 has 14 cores and 14 threads versus the i7's 20 cores and 28 threads, but it uses a 3 nm TSMC process versus the i7's 10 nm Intel process. The Ultra 5's higher base clock (4.20 GHz vs 2.10 GHz) and larger per-core caches (192 KB L1, 3 MB L2) give it a per-thread performance edge that shows in 14 of 17 head-to-head wins.

Q: Is the i7-14700F better at anything?

A: Yes, in three PassMark tests: integer math (155,808 vs 98,854, a 36.6% lead), data compression (505,885 vs 460,123, a 9% lead), and random string sorting (55,918 vs 55,206, a 1.3% lead). These are all workloads that benefit from its 28 threads and 33 MB shared L3 cache.

Q: Which CPU has better single-thread performance?

A: The Ultra 5 245KF wins single-thread tests decisively: 4,715 vs 4,257 in PassMark single-thread (10.8% ahead), 521 vs 499 in Cinebench R15 single-core (4.4% ahead), and 5,173 vs 4,958 in Cinebench R23 single-core (4.3% ahead).

Q: Can I use the same motherboard for both?

A: No. The Ultra 5 245KF uses Intel Socket 1851, while the i7-14700F uses Intel Socket 1700. They are physically incompatible.

Q: Which CPU supports ECC memory?

A: The i7-14700F supports ECC memory. The Ultra 5 245KF does not list ECC support.

Q: Which CPU is better for overclocking?

A: The Ultra 5 245KF has an unlocked multiplier, while the i7-14700F's multiplier is locked. The Ultra 5 is the only one of the two that allows multiplier-based overclocking.

Specification Differences

| Specification | Intel Core Ultra 5 245KF | Intel Core i7-14700F |

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

| Cores | 14 | 20 |

| Threads | 14 | 28 |

| Base clock | 4.20 GHz | 2.10 GHz |

| Boost clock | 5.20 GHz | 5.40 GHz |

| TDP | 125 W | 65 W |

| Socket | Intel Socket 1851 | Intel Socket 1700 |

| Architecture | Arrow Lake | Raptor Lake |

| Process node | 3 nm | 10 nm |

| Foundry | TSMC | Intel |

| Transistors | 17,800 million | Not listed |

| Die size | 243 mm² | 257 mm² |

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

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

| L3 cache | 24 MB (shared) | 33 MB (shared) |

| Memory support | DDR5 | DDR4, DDR5 |

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

| ECC memory | No | Yes |

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

| Multiplier unlocked | Yes | No |

| Release date | 2024-10-23 | 2024-01-07 |

| Launch MSRP | $294 | $359 |

Head-to-Head Benchmarks

The Cinebench results tell a story of consistent, moderate superiority. In Cinebench R15 multi-core, the Ultra 5 scores 3,693 versus 3,540 (4.3% ahead). R15 single-core shows 521 vs 499 (4.4%). R20 multi-core repeats the 4.3% pattern: 15,391 vs 14,751. R20 single-core: 2,172 vs 2,082 (4.3%). R23 multi-core: 36,647 vs 35,122 (4.3%). R23 single-core: 5,173 vs 4,958 (4.3%). The uniformity of these deltas suggests a fixed per-clock advantage baked into the Arrow Lake design, not a workload-specific effect.

The PassMark suite reveals where the architectures truly diverge. The biggest Ultra 5 win is find prime numbers: 416 vs 176, a 136.4% advantage that indicates a vastly superior integer-sequential path or better branch handling. Extended instructions follow at 32.7% (37,912 vs 28,564), then floating point math at 22.9% (131,546 vs 107,005), physics at 22.1% (2,998 vs 2,455), and single-thread at 10.8% (4,715 vs 4,257). Data encryption also goes to the Ultra 5: 33,381 vs 30,144, a 10.7% margin.

The i7's counterattack is confined to integer-heavy, thread-scalable tasks. Integer math is its biggest win: 155,808 vs 98,854, meaning the i7 is 36.6% ahead. Data compression follows at 9% (505,885 vs 460,123). Random string sorting is nearly a tie, with the i7 ahead by just 1.3% (55,918 vs 55,206). Even in its winning tests, the i7's margins are either enormous (integer math) or razor-thin (string sorting), whereas the Ultra 5's wins span a broad range of workloads with double-digit margins in five separate PassMark tests.

The multithread PassMark score — a general aggregate — goes to the Ultra 5 at 43,110 vs 41,317 (4.3%), matching the Cinebench multi-core deltas. The overall average benchmark score is 55,093 for the Ultra 5 versus 53,620 for the i7, a 2.7% gap. Both CPUs sit at the 91st percentile among all CPUs, meaning they occupy the same tier overall, but the Ultra 5 achieves that tier with 14 fewer threads.

The Verdict

The data points to a clear but nuanced conclusion. The Intel Core Ultra 5 245KF is the better processor for the majority of users. It wins 14 of 17 head-to-head tests, including every Cinebench benchmark, every single-thread test, and all floating-point, encryption, physics, and extended-instruction workloads. Its single-thread lead of 10.8% in PassMark and its consistent 4.3% multi-core lead in Cinebench suggest that daily responsiveness, gaming, and most productivity software will favor the Ultra 5. Its unlocked multiplier adds overclocking headroom, and its 3 nm process node with 17,800 million transistors indicates a more modern design.

The Intel Core i7-14700F is not obsolete, but it is specialized. It wins integer math by 36.6%, data compression by 9%, and random string sorting by 1.3%. These are the workloads of database operations, compression utilities, and certain scientific computing tasks that can feed 28 threads. The i7 also supports ECC memory, which matters for reliability-focused builds. Its 65 W TDP is notably lower than the Ultra 5's 125 W, which could matter for power-constrained systems, though the data does not include power consumption measurements.

The launch MSRP difference is $294 for the Ultra 5 versus $359 for the i7, making the Ultra 5 the lower-priced option at launch while also being the better performer in most tests. The i7's higher core count and thread count do not translate into general superiority; they only manifest in three specific PassMark tests. For a buyer choosing between LGA 1851 and LGA 1700 platforms, the benchmark evidence favors the Ultra 5 245KF for virtually every workload except integer-heavy, highly parallel batch processing. The i7-14700F remains a defensible pick only if ECC support, lower TDP, or those three specific PassMark workloads are non-negotiable requirements.