Intel Core i9-14900F vs Intel Core Ultra 7 255HX Comparison

Intel Core Ultra 7 255HX and Intel Core i9-14900F represent two very different approaches to high-performance computing. The Ultra 7 255HX is a mobile powerhouse built on a 3 nm process, while the i9-14900F is a desktop flagship with more cores and higher clock speeds. The benchmark data reveals a clear split: the Ultra 7 255HX dominates in many specialized workloads, while the i9-14900F takes the lead in raw multi-threaded throughput and single-core speed. This analysis breaks down where each processor excels, the architectural reasons behind those results, and the specific benchmark numbers that define the comparison.

Where Each One Wins

The Intel Core Ultra 7 255HX wins the majority of the head-to-head benchmarks, taking 11 out of 17 tests. Its victories are concentrated in workloads that benefit from architectural efficiency and specialized instruction execution. It is decisively ahead in PassMark's floating-point math (34.4% delta), extended instructions (32.7% delta), and find prime numbers (91.4% delta). The Ultra 7 also wins in Cinebench R20 multi-core and single-core, as well as data encryption, multithreaded performance, physics, and single-thread tests. This suggests a processor that is highly efficient per clock and excels in tasks that leverage modern instruction sets and floating-point throughput.

The Intel Core i9-14900F wins 6 benchmarks, with a strong emphasis on more traditional compute-heavy tasks. Its most significant victories come in Cinebench R23 multi-core (a 17.5% delta over the Ultra 7) and Cinebench R15 single-core (a massive 41.8% delta). It also wins in integer math, data compression, and random string sorting. The i9-14900F clearly has the advantage in scenarios that rely on high clock speeds and many threads, particularly in Cinebench R23 and integer-heavy data manipulation. The data shows a classic split: the Ultra 7 255HX for specialized and efficiency-oriented tasks, the i9-14900F for raw multi-threaded rendering and integer arithmetic.

Architecture Differences

The two chips are built on fundamentally different foundations. The Core Ultra 7 255HX is based on the Arrow Lake architecture, specifically the Arrow Lake-HX variant, fabricated by TSMC on a 3 nm process node. It uses a hybrid configuration with 20 cores and 20 threads. This processor is designed for mobile platforms, using the Intel BGA 2114 socket. Its cache hierarchy is substantial, with 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3 cache. It also includes an integrated Arc Xe-LPG Graphics with 64 EUs, a feature completely absent on the desktop part.

The Core i9-14900F is a desktop part based on the older Raptor Lake architecture (Raptor Lake Refresh), fabricated by Intel on a 10 nm process. It uses the Intel Socket 1700 and features a higher core count: 24 cores and 32 threads. The cache configuration is different: 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3 cache. The i9-14900F supports both DDR4 and DDR5 memory, while the Ultra 7 is limited to DDR5 only. The i9 also supports ECC memory, while the Ultra 7 does not. The i9 has a 65W TDP, higher than the 55W TDP of the Ultra 7, but the Ultra 7 has a higher base clock (2.40 GHz) compared to the i9's 2.00 GHz. Conversely, the i9 has a higher boost clock, reaching 5.80 GHz compared to the Ultra 7's 5.20 GHz.

Head-to-Head Benchmarks

The most significant win for the Ultra 7 255HX is in the PassMark find prime numbers test, where it scores 400 versus 209, a 91.4% delta in its favor. This indicates a significant advantage in integer-heavy mathematical operations. The Ultra 7 also shows strong wins in floating-point math (160,624 vs 119,550, a 34.4% delta) and extended instructions (41,247 vs 31,084, a 32.7% delta). In Cinebench R15 multi-core, the Ultra 7 wins with 4,916 points versus 3,986 points, a 23.3% delta. It also edges out the i9 in Cinebench R20 multi-core (17,187 vs 16,611, a 3.5% delta) and single-core (2,426 vs 2,344, a 3.5% delta). Passmark multithread also favors the Ultra 7 (48,234 vs 46,532, a 3.7% delta).

The i9-14900F's strongest counterattack comes in Cinebench R23 single-core, where it scores 5,583 points versus 2,163 points, a delta of 61.3% in its favor. This is the largest single-core advantage in the entire comparison. It also wins clearly in Cinebench R23 multi-core (39,551 vs 32,612, a 17.5% delta). In Passmark integer math, the i9 is ahead with 177,066 points versus 127,126, a 28.2% delta. It also wins in data compression (564,207 vs 515,143, an 8.7% delta) and random string sorting (63,728 vs 62,591, a 1.8% delta). The i9 also shows a strong single-core win in Cinebench R15, scoring 562 versus 327, a 41.8% delta.

FAQ

Q: Which processor is faster in single-core tests?

A: The Intel Core i9-14900F holds a significant lead. In Cinebench R23 single-core, it scores 5,583 points compared to 2,163 points, a delta of 61.3% in its favor. In Cinebench R15 single-core, the i9 wins with 562 points versus 327 points, a 41.8% delta.

Q: Which processor is faster in multi-core tests?

A: The results are mixed, but the i9-14900F wins the most demanding test. In Cinebench R23 multi-core, the i9 scores 39,551 points versus the Ultra 7's 32,612, a 17.5% delta. However, the Ultra 7 255HX wins in Cinebench R20 multi-core (17,187 vs 16,611) and Cinebench R15 multi-core (4,916 vs 3,986).

Q: How do the two compare in PassMark integer and floating-point math?

A: The i9-14900F wins in integer math with a score of 177,066 versus 127,126, a 28.2% delta. The Ultra 7 255HX wins in floating-point math with a score of 160,624 versus 119,550, a 34.4% delta.

Q: Are the processors comparable in terms of core and thread counts?

A: No. The Ultra 7 255HX has 20 cores and 20 threads, while the i9-14900F has 24 cores and 32 threads.

Q: Which processor is more efficient in data encryption?

A: The Ultra 7 255HX wins in the Passmark data encryption test with a score of 39,499 compared to the i9's 34,644, representing a 14% delta.

Q: What are the TDP ratings of the two processors?

A: The Ultra 7 255HX has a TDP of 55W, while the i9-14900F has a TDP of 65W.

Specification Differences

The two processors differ across all major specifications. The Ultra 7 255HX has 20 cores and 20 threads, while the i9-14900F has 24 cores and 32 threads. The base clock is 2.40 GHz for the Ultra 7 and 2.00 GHz for the i9. The boost clock is 5.20 GHz for the Ultra 7 and 5.80 GHz for the i9. The TDP is 55W for the Ultra 7 and 65W for the i9. The Ultra 7 is a mobile part using the BGA 2114 socket, while the i9 is a desktop part using Socket 1700. The architecture is Arrow Lake for the Ultra 7 and Raptor Lake for the i9. The fabrication process is 3 nm (TSMC) for the Ultra 7 and 10 nm (Intel) for the i9. The L3 cache is 30 MB for the Ultra 7 and 36 MB for the i9. The Ultra 7 supports only DDR5 memory, while the i9 supports DDR4 and DDR5. The Ultra 7 has ECC support disabled, while the i9 has it enabled. The Ultra 7 has integrated Arc Xe-LPG Graphics (64EU), while the i9 has no integrated graphics. The Ultra 7's PCIe is Gen 5 with 20 lanes, while the i9 has Gen 5 with 16 lanes. The Ultra 7 is unlocked, while the i9 is not.

The Verdict

The choice between the Intel Core Ultra 7 255HX and Intel Core i9-14900F hinges on platform and workload. The data clearly shows the Ultra 7 255HX is a mobile processor with a strong efficiency focus. It wins in specialized tasks like encryption, floating-point math, and extended instructions, and it leads in four out of six Cinebench multi-core and multi-thread tests. Its 11 benchmark wins indicate a well-rounded, modern mobile processor. For those seeking a desktop processor for raw multi-threaded rendering, the i9-14900F is the stronger choice, as seen in its decisive Cinebench R23 multi-core win. Its performance in Cinebench R23 single-core is also unmatched by the mobile part, making it a better fit for workloads that are not heavily threaded. The i9-14900F is also a better fit for integer-heavy tasks and data compression. The production status for both is active, but the Ultra 7 255HX is aimed at mobile systems, while the i9-14900F is for desktop systems. The average benchmark score for the Ultra 7 255HX is 62,738, placing it in the 93rd percentile, with the i9-14900F averaging 60,008 points, in the 92nd percentile. These figures are close, but the Ultra 7's score is 0.2% above its nearest rival, while the i9 is 0.2% below its own. The choice is clear: for a mobile platform with strong specialized acceleration, the Ultra 7 255HX is the one. For a desktop system where maximum multi-threaded performance in Cinebench R23 and high clock speeds are paramount, the i9-14900F is the data-backed pick.