Intel Core 7 251E vs Intel Core Ultra 7 265H Comparison

FAQ

Q: How do the core counts differ between the Intel Core 7 251E and the Intel Core Ultra 7 265H?

A: The Core 7 251E has 24 cores and 32 threads, while the Core Ultra 7 265H has 16 cores and 16 threads. The Core 7 251E offers 8 more cores and 16 more threads.

Q: What is the process node difference between these two processors?

A: The Core 7 251E is built on Intel's 10 nm process, while the Core Ultra 7 265H uses TSMC's 3 nm process. The Core Ultra 7 265H uses a significantly smaller manufacturing node.

Q: Which processor has a higher boost clock speed?

A: The Core 7 251E has a boost clock of 5.60 GHz, which is higher than the Core Ultra 7 265H's 5.30 GHz boost clock. The Core 7 251E also has a slightly lower base clock at 2.10 GHz compared to 2.20 GHz.

Q: How does the thermal design power (TDP) compare?

A: The Core 7 251E has a TDP of 65 watts, while the Core Ultra 7 265H has a TDP of 28 watts. The Core Ultra 7 265H is designed for much lower power consumption.

Q: What integrated graphics do these processors feature?

A: The Core 7 251E uses Intel UHD Graphics 770, while the Core Ultra 7 265H features Arc Graphics 140T. The Arc Graphics 140T is a more advanced integrated GPU.

Q: Which processor has a higher average benchmark score?

A: The Core Ultra 7 265H has an average benchmark score of 41621, while the Core 7 251E has no recorded benchmark data in the database. The Core Ultra 7 265H sits in the 88th percentile of all CPUs.

Architecture Differences

The Intel Core 7 251E and Intel Core Ultra 7 265H represent two fundamentally different approaches in Intel's lineup. The Core 7 251E, codenamed Bartlett Lake, is a desktop processor built on Intel's 10 nm process node. It uses the Intel Socket 1700 platform and features a large 24-core, 32-thread configuration. The die size measures 257 mm², and the processor relies on a per-core cache structure with 80 KB of L1 cache and 2 MB of L2 cache per core, alongside a shared 36 MB L3 cache.

The Core Ultra 7 265H, codenamed Arrow Lake-H, is a mobile processor built on TSMC's 3 nm process node. It belongs to the Core Ultra Series 2 generation and uses the Intel BGA 2049 socket. This chip features 16 cores and 16 threads, meaning it lacks simultaneous multithreading. The cache hierarchy is different as well, with 192 KB of L1 cache per core and 3 MB of L2 cache per core, but a smaller shared 24 MB L3 cache. The smaller process node and lack of SMT suggest a design focused on efficiency for mobile workloads.

The memory support differs substantially. The Core 7 251E supports both DDR4 and DDR5 memory in a dual-channel configuration, with a memory bandwidth of 89.6 GB/s. The Core Ultra 7 265H supports DDR5 and LPDDR5X memory, also dual-channel, but with a higher memory bandwidth of 102.4 GB/s. The Core Ultra 7 265H's support for LPDDR5X indicates a mobile-first design where power efficiency and compact memory solutions are prioritized.

PCIe connectivity also varies between the two. The Core 7 251E provides Gen 5 with 16 lanes from the CPU, while the Core Ultra 7 265H offers Gen 5 with only 8 lanes. This difference reflects the desktop versus mobile positioning, as desktop platforms typically require more expansion capability. Both processors support ECC memory, which is notable for reliability-focused workloads.

The integrated graphics differ significantly. The Core 7 251E uses UHD Graphics 770, a more established Intel graphics solution. The Core Ultra 7 265H features Arc Graphics 140T, which represents Intel's newer discrete-class integrated graphics architecture. The Arc solution is generally more capable for graphics workloads, though the database does not provide specific graphics benchmark scores for either processor.

The Verdict

The recorded data indicates that the Core Ultra 7 265H is the stronger performer in benchmark tests. With an average benchmark score of 41621 and a percentile ranking of 88 among all CPUs, it demonstrates solid multi-threaded and single-threaded capabilities. The Core 7 251E has no recorded benchmark scores in the database, making direct performance comparison impossible from the available data.

For users prioritizing raw performance, the Core Ultra 7 265H clearly delivers. The Cinebench R23 multi-core score of 19940 and single-core score of 2080 place it in a competitive position. The Passmark multi-thread score of 34027 further confirms its capability. The nearest rival data shows the Core Ultra 7 265H performing within 0.6% of the AMD Ryzen 9 5900X and within 0.1% of the Intel Core i7-14650HX, indicating strong competitive positioning.

The Core 7 251E, despite having more cores and threads, lacks benchmark data to substantiate performance claims. Its 24-core configuration with 32 threads suggests potential for heavily threaded workloads, but no measurements are available. The 65-watt TDP indicates a desktop-oriented design that can sustain higher power draw. The Core Ultra 7 265H, with its 28-watt TDP and 3 nm process, delivers confirmed performance at much lower power consumption.

The choice between these processors depends on the target platform. The Core 7 251E is a desktop processor for the Socket 1700 platform, while the Core Ultra 7 265H is a mobile processor for the BGA 2049 socket. They are not directly interchangeable. The data supports the Core Ultra 7 265H as the better-validated performer, particularly for mobile systems where the combination of high benchmark scores and low power draw is advantageous.

Specification Differences

The two processors differ across nearly every major specification category. The Core 7 251E has 24 cores and 32 threads, while the Core Ultra 7 265H has 16 cores and 16 threads. The Core 7 251E operates with a base clock of 2.10 GHz and a boost clock of 5.60 GHz. The Core Ultra 7 265H has a base clock of 2.20 GHz and a boost clock of 5.30 GHz. The TDP is 65 watts for the Core 7 251E versus 28 watts for the Core Ultra 7 265H.

The socket types are entirely different: Intel Socket 1700 for the Core 7 251E and Intel BGA 2049 for the Core Ultra 7 265H. The process nodes differ as well, with 10 nm for the Core 7 251E and 3 nm for the Core Ultra 7 265H. The Core 7 251E is fabricated by Intel, while the Core Ultra 7 265H is fabricated by TSMC.

Cache configurations show notable differences. The Core 7 251E has 80 KB of L1 cache per core, 2 MB of L2 cache per core, and 36 MB of shared L3 cache. The Core Ultra 7 265H has 192 KB of L1 cache per core, 3 MB of L2 cache per core, and 24 MB of shared L3 cache. The die size is recorded only for the Core 7 251E at 257 mm².

Memory support differs, with the Core 7 251E supporting DDR4 and DDR5, while the Core Ultra 7 265H supports DDR5 and LPDDR5X. Both use dual-channel memory buses, but the memory bandwidth is 89.6 GB/s for the Core 7 251E and 102.4 GB/s for the Core Ultra 7 265H. PCIe lanes are 16 for the Core 7 251E and 8 for the Core Ultra 7 265H, both at Gen 5.

The integrated graphics are UHD Graphics 770 for the Core 7 251E and Arc Graphics 140T for the Core Ultra 7 265H. The market segments differ: Desktop for the Core 7 251E and Mobile for the Core Ultra 7 265H. The production status for both is Active, and both were released on the same date. The Core 7 251E has a launch MSRP of $384, while the Core Ultra 7 265H has no recorded launch MSRP. Both processors have locked multipliers.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the Intel Core 7 251E and Intel Core Ultra 7 265H. The Core 7 251E has no recorded benchmark scores at all, while the Core Ultra 7 265H has an extensive benchmark suite. The wins count shows 0 for both processors in direct comparisons.

The Core Ultra 7 265H demonstrates strong performance across multiple benchmark categories. In Cinebench R15 multi-core, it scores 2989, with a single-core score of 307. The Cinebench R20 results show 12131 for multi-core and 1712 for single-core. The newer Cinebench R23 test yields 19940 for multi-core and 2080 for single-core. These scores indicate balanced performance across both multi-threaded and single-threaded workloads.

Passmark results for the Core Ultra 7 265H cover a wide range of tasks. The data compression score is 334711, data encryption is 26005, and extended instructions score 26805. Floating point math achieves 109123, integer math scores 85479, and find prime numbers completes at 335. The multithread score is 34027, physics score is 2497, and random string sorting is 40742. Single-thread performance is recorded at 4334.

The nearest rivals for the Core Ultra 7 265H provide context for its performance. The Intel Core 7 251TE has an average score of 41650, which is 0.1% higher than the Core Ultra 7 265H's 41621. The Intel Core i7-14650HX scores 41576, or 0.1% lower. The Intel Core i7-12850HX scores 41779, which is 0.4% higher. The AMD Ryzen 9 5900X scores 41376, putting the Core Ultra 7 265H 0.6% ahead.

The Core Ultra 7 265H's percentile ranking of 88 indicates it outperforms the vast majority of CPUs in the database. Its average benchmark score of 41621 places it in a competitive range against both Intel and AMD alternatives. The absence of benchmark data for the Core 7 251E means no performance validation exists for that processor in the database. The recorded information shows the Core Ultra 7 265H as a well-measured processor with consistent scores across multiple test suites, while the Core 7 251E remains unmeasured and unverified in terms of actual performance.