Intel Core 7 251TE vs Intel Core i5-14450HX Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive overall victory for the Intel Core 7 251TE, which wins 14 of the 17 head-to-head comparisons. The largest margins appear in compute-heavy workloads. In PassMark integer math, the 251TE scores 125,739 against 78,330 for the i5-14450HX, a 60.5% advantage. Floating point math shows a 47.5% gap, with 85,607 versus 58,037. Prime number generation, a pure core-throughput test, favors the 251TE by 42.9% (140 versus 98). Data encryption is 42.4% ahead (22,176 versus 15,574), and random string sorting is 34.1% ahead (39,643 versus 29,565).

The Cinebench suite reinforces the same pattern. Across R15, R20, and R23, the multi-core deltas are nearly uniform: 26.9% in favor of the 251TE in every version. The single-core Cinebench results are also consistent, with the 251TE leading by 27% in R15 and R20 and by 26.9% in R23. Physics simulation in PassMark shows a 31.4% lead for the 251TE (1,938 versus 1,475). PassMark multithread is 26.8% higher (30,022 versus 23,680), and data compression is 20.1% higher (334,399 versus 278,538).

The i5-14450HX does secure two narrow wins, both in PassMark tests. In single-thread performance, it records 3,643 versus 3,568 for the 251TE, a 2.1% margin. In extended instructions, it posts 17,207 versus 16,974, a 1.4% edge. These are the only benchmarks where the mobile part leads, and neither margin is large. The average benchmark score reflects the overall gap: the 251TE sits at 41,650, while the i5-14450HX is at 32,040. That difference places the 251TE at the 88th percentile of all CPUs, compared to the 82nd percentile for the i5-14450HX. The 251TE's nearest rivals by average score include the Core Ultra 7 265H (41,621, +0.1%) and the Core i7-14650HX (41,576, +0.2%), while the i5-14450HX sits close to the Core i7-13705H (32,076, -0.1%) and the Core i5-14400 (32,115, -0.2%).

Architecture Differences

The two processors diverge sharply in configuration. The Intel Core 7 251TE uses the Bartlett Lake codename and belongs to the Core 7 generation, built on a 10 nm process with a die size of 215 mm². It packs 24 cores and 32 threads. The Intel Core i5-14450HX is a Raptor Lake-HX part from the Core 14th Gen series, also on a 10 nm node but with a larger die at 257 mm². It offers 10 cores and 16 threads. The core count difference is the primary driver of the multi-threaded results.

Cache hierarchies also differ. Both parts use 80 KB of L1 per core, but L2 allocation varies: the 251TE provides 1.25 MB per core, while the i5-14450HX provides 2 MB per core. Shared L3 is 36 MB on the 251TE versus 20 MB on the i5-14450HX. The larger L3 on the 251TE may help in data-heavy workloads, though the per-core L2 advantage belongs to the i5-14450HX.

Clock speeds favor the 251TE in boost, with 5.40 GHz against 4.80 GHz for the i5-14450HX. The base clocks are reversed: 1.40 GHz for the 251TE and 2.40 GHz for the i5-14450HX. The higher boost ceiling on the 251TE likely contributes to its single-core Cinebench wins, even though the i5-14450HX wins the PassMark single-thread test by a small margin.

Memory support is similar: both support DDR4 and DDR5 over dual-channel buses, and both support ECC memory. The 251TE lists a memory bandwidth of 89.6 GB/s, while the i5-14450HX has no bandwidth figure recorded. Both use Gen 5 PCIe with 16 CPU lanes. Integrated graphics differ: the 251TE carries UHD Graphics 770, while the i5-14450HX uses UHD Graphics 710. The market segments differ, with the 251TE classified as desktop and the i5-14450HX as mobile. Sockets reflect that split: the 251TE uses Intel Socket 1700, and the i5-14450HX uses Intel BGA 1964. The multiplier is locked on the 251TE but unlocked on the i5-14450HX. The i5-14450HX was released in January 2024, while the 251TE followed in January 2025.

Where Each One Wins

The Intel Core 7 251TE is the clear choice for parallel workloads. Its 24 cores and 32 threads translate directly into large margins in integer math, floating point math, encryption, compression, and physics. The 60.5% lead in integer math and the 47.5% lead in floating point math indicate that compilation, scientific simulation, and financial modeling would all favor the 251TE. The 42.4% encryption advantage points to stronger performance in security-related processing. The 26.9% Cinebench multi-core margins across all three versions suggest consistent rendering performance, which benefits video encoding and 3D rendering tasks. The 20.1% compression lead helps with archiving and database workloads.

The Intel Core i5-14450HX wins only in narrow, single-threaded scenarios. Its 2.1% PassMark single-thread lead and 1.4% extended instructions lead are real but small. Applications that rely heavily on a single thread, such as some legacy software or lightly threaded interactive tools, would see a minor advantage here. The unlocked multiplier on the i5-14450HX also allows manual overclocking, which the locked 251TE does not permit. For users who prioritize raw throughput, the 251TE dominates; for those who need a small single-thread edge and overclocking flexibility, the i5-14450HX has a niche.

FAQ

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

A: The Intel Core 7 251TE. It leads by 26.9% in Cinebench R15, R20, and R23 multi-core tests, and by 26.8% in PassMark multithread. Its integer math score is 60.5% higher, and floating point math is 47.5% higher.

Q: Does the Intel Core i5-14450HX win any benchmarks?

A: Yes, two. It wins PassMark single-thread by 2.1% (3,643 versus 3,568) and PassMark extended instructions by 1.4% (17,207 versus 16,974). It also has an unlocked multiplier, unlike the locked 251TE.

Q: How do their average benchmark scores compare?

A: The 251TE has an average score of 41,650, placing it at the 88th percentile of all CPUs. The i5-14450HX has an average of 32,040, at the 82nd percentile. The 251TE sits within 0.6% of rivals like the Core i7-14700T and Core i7-12850HX, while the i5-14450HX is within 0.6% of the Core i9-11900.

Q: What are the core and thread counts?

A: The 251TE has 24 cores and 32 threads. The i5-14450HX has 10 cores and 16 threads. Both use the same 10 nm process node.

Q: Do both processors support ECC memory?

A: Yes, both support ECC memory. Both also support DDR4 and DDR5 across dual-channel buses, and both use Gen 5 PCIe with 16 CPU lanes.

Q: What are the integrated graphics differences?

A: The 251TE uses UHD Graphics 770, while the i5-14450HX uses UHD Graphics 710. The 251TE also has a larger shared L3 cache (36 MB versus 20 MB) and a higher boost clock (5.40 GHz versus 4.80 GHz).

Specification Differences

The table below lists only the fields where the two processors differ, based on the recorded data.

| Field | Intel Core 7 251TE | Intel Core i5-14450HX |

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

| Series | (none) | Core 14th Gen |

| Cores | 24 | 10 |

| Threads | 32 | 16 |

| Base clock | 1.40 GHz | 2.40 GHz |

| Boost clock | 5.40 GHz | 4.80 GHz |

| TDP | 45 W | 55 W |

| Socket | Intel Socket 1700 | Intel BGA 1964 |

| Codename | Bartlett Lake | Raptor Lake-HX |

| Generation | Core 7 (Bartlett Lake) | Core i5 (Raptor Lake-HX Refresh) |

| Die size | 215 mm² | 257 mm² |

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

| L3 cache | 36 MB (shared) | 20 MB (shared) |

| Memory bandwidth | 89.6 GB/s | (not recorded) |

| Integrated graphics | UHD Graphics 770 | UHD Graphics 710 |

| Market segment | Desktop | Mobile |

| Release date | 2025-01-12 | 2024-01-07 |

| Launch MSRP | $384 | (not recorded) |

| Multiplier unlocked | No | Yes |

| Part number | SRQAXQ5ZG | SRMXK |

Both parts share the same manufacturer (Intel), process node (10 nm), foundry (Intel), L1 cache size (80 KB per core), memory support (DDR4, DDR5), memory bus (dual-channel), ECC support (true), PCIe configuration (Gen 5, 16 lanes), and production status (Active). The i5-14450HX has no recorded launch MSRP, while the 251TE lists a launch MSRP of $384.