Intel Core 7 251TE vs Intel Core Ultra 7 265HX Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive sweep for the Intel Core Ultra 7 265HX across all 17 head-to-head benchmark comparisons. The Intel Core 7 251TE does not register a single win in the database's measured tests. The most striking margin appears in PassMark's find prime numbers test, where the 265HX scores 406 versus 140 for the 251TE, a 65.5% advantage. This indicates a substantial gap in workloads that rely on rapid integer iteration and algorithmic efficiency.

Cinebench results follow a consistent pattern. The 265HX delivers 4096 points in Cinebench R15 multi-core versus 2572 for the 251TE, a 37.2% difference. Single-core in the same test shows 578 versus 362, also a 37.4% gap. The pattern repeats in Cinebench R20, R23, and R23 single-core, with the 265HX outperforming by 37.2% in every multi-core iteration and the single-core R23 test. The 265HX reaches 40642 in R23 multi-core, while the 251TE posts 25518. In R23 single-core, the 265HX scores 5737 against 3602.

PassMark's extended instructions test shows the largest relative gap after prime numbers. The 265HX scores 40741, which is 58.3% higher than the 251TE's 16974. This suggests a major advantage in AVX-style and vectorized workloads. Data encryption also shows a wide margin, with the 265HX at 39472 versus 22176 for the 251TE, a 43.8% lead. Floating-point math favors the 265HX by 47%, with scores of 161605 and 85607 respectively.

The narrowest margin appears in PassMark integer math. The 265HX scores 126954, only 1% ahead of the 251TE's 125739. This near-tie indicates that raw integer throughput is broadly comparable, despite the overall benchmark dominance of the 265HX. PassMark single-thread results show a 20.7% advantage for the 265HX, with 4500 versus 3568. Multi-thread PassMark shows a 37.4% lead, with 47985 versus 30022.

Other PassMark tests reinforce the pattern. Data compression favors the 265HX by 34.7%, with 511817 versus 334399. Physics scores show a 34.9% gap, with 2978 versus 1938. Random string sorting runs 36.5% faster on the 265HX, at 62458 versus 39643. The overall average benchmark score for the 265HX is 63173, placing it in the 93rd percentile of all CPUs, while the 251TE averages 41650 and sits in the 88th percentile.

The 265HX's closest rivals in the database include the Intel Core i7-13790F, which trails by only 0.1%, and the AMD Ryzen AI 7 450G, which leads by 0.2%. The 251TE's nearest rivals include the Intel Core Ultra 7 265H, which leads by 0.1%, and the Intel Core i7-14650HX, which leads by 0.2%. These comparisons show that while the 251TE is competitive within its own tier, the 265HX operates in a clearly higher performance class.

Architecture Differences

The two processors diverge fundamentally in process technology and design philosophy. The Intel Core 7 251TE uses a 10 nm process node fabricated by Intel, with a die size of 215 mm². Its codename is Bartlett Lake, and it belongs to the Core 7 generation. The 251TE is a desktop part on Intel Socket 1700. In contrast, the Intel Core Ultra 7 265HX uses a 3 nm process node fabricated by TSMC, with a die size of 243 mm². Its architecture is Arrow Lake, specifically Arrow Lake-HX, and it is a mobile part on Intel BGA 2114. The 265HX also carries 17,800 million transistors, a figure not recorded for the 251TE.

Core and thread counts differ significantly. The 251TE has 24 cores and 32 threads, while the 265HX has 20 cores and 20 threads. The 251TE relies on hyper-threading to reach 32 threads from 24 cores, while the 265HX runs with a one-to-one core-to-thread ratio. Despite fewer threads, the 265HX delivers higher benchmark scores, indicating that its per-core efficiency and newer architecture more than compensate for the lower thread count.

Cache hierarchies also differ. The 251TE has 80 KB of L1 cache per core, 1.25 MB of L2 cache per core, and 36 MB of shared L3 cache. The 265HX has 192 KB of L1 cache per core, 3 MB of L2 cache per core, and 30 MB of shared L3 cache. The 265HX provides more cache per core, which contributes to its single-thread advantage, while the 251TE offers a larger total L3 pool.

Memory support separates the two as well. The 251TE supports both DDR4 and DDR5 memory, with dual-channel configuration and a memory bandwidth of 89.6 GB/s. It also supports ECC memory. The 265HX supports only DDR5, also dual-channel, but with a higher bandwidth of 102.4 GB/s. ECC is not supported on the 265HX. PCIe lanes differ, with the 251TE offering Gen 5 with 16 CPU lanes, while the 265HX provides Gen 5 with 20 CPU lanes.

Integrated graphics differ notably. The 251TE includes UHD Graphics 770, while the 265HX uses Arc Xe-LPG Graphics with 64 execution units. The 265HX also has an unlocked multiplier, while the 251TE does not. The 265HX is part of the Core Ultra Series 2, while the 251TE has no series designation. Both processors were released on the same date, 2025-01-12, and both are listed as active in production.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core 7 251TE has 24 cores and 32 threads. The Intel Core Ultra 7 265HX has 20 cores and 20 threads.

Q: Which processor has a higher boost clock?

A: The Intel Core 7 251TE has a boost clock of 5.40 GHz, while the Intel Core Ultra 7 265HX boosts to 5.30 GHz. The 251TE is 0.10 GHz higher.

Q: Does the Intel Core Ultra 7 265HX support ECC memory?

A: No. The 265HX does not support ECC memory, while the Intel Core 7 251TE does support ECC.

Q: Which processor has a higher memory bandwidth?

A: The Intel Core Ultra 7 265HX has a memory bandwidth of 102.4 GB/s, compared to 89.6 GB/s for the Intel Core 7 251TE.

Q: Which processor has a larger L3 cache?

A: The Intel Core 7 251TE has 36 MB of shared L3 cache, while the Intel Core Ultra 7 265HX has 30 MB of shared L3 cache.

Q: Which processor has a higher average benchmark score?

A: The Intel Core Ultra 7 265HX has an average benchmark score of 63173, placing it in the 93rd percentile. The Intel Core 7 251TE averages 41650, placing it in the 88th percentile.

Q: Which processor has an unlocked multiplier?

A: The Intel Core Ultra 7 265HX has an unlocked multiplier. The Intel Core 7 251TE does not.

Specification Differences

| Field | Intel Core 7 251TE | Intel Core Ultra 7 265HX |

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

| Cores | 24 | 20 |

| Threads | 32 | 20 |

| Base Clock | 1.40 GHz | 2.60 GHz |

| Boost Clock | 5.40 GHz | 5.30 GHz |

| TDP | 45 W | 55 W |

| Socket | Intel Socket 1700 | Intel BGA 2114 |

| Codename | Bartlett Lake | Arrow Lake-HX |

| Generation | Core 7 (Bartlett Lake) | Ultra 7 (Arrow Lake-HX) |

| Process Node | 10 nm | 3 nm |

| Foundry | Intel | TSMC |

| Transistors | Not recorded | 17,800 million |

| Die Size | 215 mm² | 243 mm² |

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

| L2 Cache | 1.25 MB (per core) | 3 MB (per core) |

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

| Memory Support | DDR4, DDR5 | DDR5 |

| Memory Bandwidth | 89.6 GB/s | 102.4 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 5, 16 Lanes | Gen 5, 20 Lanes |

| Integrated Graphics | UHD Graphics 770 | Arc Xe-LPG Graphics 64EU |

| Market Segment | Desktop | Mobile |

| Launch MSRP | $384 | Not recorded |

| Multiplier Unlocked | No | Yes |

Where Each One Wins

The Intel Core Ultra 7 265HX wins every benchmark in the database. Its largest advantages appear in PassMark extended instructions (58.3% ahead), find prime numbers (65.5% ahead), and data encryption (43.8% ahead). These results indicate that the 265HX is the stronger choice for computation-heavy workloads, including cryptographic operations, vectorized scientific code, and any task that stresses SIMD execution units. The 265HX also leads in Cinebench multi-core and single-core tests by a consistent 37.2%, making it clearly superior for rendering, 3D modeling, and productivity applications that scale with both core count and per-core speed.

The 265HX's higher base clock of 2.60 GHz versus 1.40 GHz contributes to its responsiveness in single-threaded tasks. Its PassMark single-thread score of 4500 against 3568 confirms that interactive applications, legacy software, and lightly threaded games will run noticeably faster on the 265HX. The 265HX also benefits from a newer 3 nm process, larger per-core caches, and higher memory bandwidth, all of which support its benchmark dominance.

The Intel Core 7 251TE does not win any recorded test, but it retains several structural advantages. It offers more cores (24 versus 20) and more threads (32 versus 20), making it a candidate for workloads where thread count alone matters, such as heavily parallel server-style tasks that do not rely on per-core efficiency. Its larger 36 MB L3 cache could benefit certain data-heavy workloads that repeatedly access a large working set. The 251TE also supports ECC memory, which is a requirement for specific reliability-sensitive environments. Its support for DDR4 memory provides flexibility for systems that already use that standard. The 251TE's desktop socket (Intel Socket 1700) allows installation in standard desktop motherboards, while the 265HX uses a mobile BGA 2114 package that is typically soldered.

In practical terms, the data positions the 265HX as the superior performer for nearly all measured tasks. The 251TE remains relevant only in scenarios where its higher thread count, ECC support, or DDR4 compatibility are decisive factors. Benchmark results show that the 265HX delivers at least a 20.7% advantage in every test category, and often far more. The only near-parity result is integer math, where the 265HX leads by just 1%, suggesting that both processors handle basic arithmetic operations at similar rates. For all other workloads, the 265HX is the clear choice based on recorded performance.