Intel Core 7 250H vs Intel Core Ultra 5 250KF Plus Comparison

The Intel Core 7 250H and the Intel Core Ultra 5 250KF Plus occupy different corners of the Intel lineup, one designed for mobile workloads and the other for desktop performance. The benchmark data shows a clear and consistent performance hierarchy, with the desktop part dominating every single recorded test. The Core Ultra 5 250KF Plus wins all 17 head-to-head comparisons, but the magnitude of those wins varies significantly depending on the workload, revealing a nuanced picture of where each processor excels.

Head-to-Head Benchmarks

The most striking difference appears in multi-threaded rendering tests. In Cinebench R23 multicore, the Core Ultra 5 250KF Plus scores 42718 against the Core 7 250H’s 16561, a delta of -61.2% for the mobile chip. This is the largest performance gap in the entire dataset, indicating a massive advantage for the desktop part in heavily threaded workloads. The Cinebench R20 multicore test shows a similar trend, with the Ultra 5 scoring 17941 versus 9697, a -46% difference.

Single-core performance also favors the Core Ultra 5 250KF Plus, though the margin is less extreme in some tests. In Cinebench R23 singlecore, the Ultra 5 scores 6030 against the Core 7’s 1931, a -68% delta, which is actually the second-largest gap recorded. However, in PassMark's single_thread test, the difference narrows considerably: the Ultra 5 scores 4698 versus 4148, a delta of only -11.7%. This suggests that while the desktop chip has a significant architectural advantage, the mobile chip’s high boost clock helps it remain competitive in lightly threaded, short-burst tasks.

The PassMark suite reveals where the Core Ultra 5 250KF Plus builds its largest leads. In find_prime_numbers, the Ultra 5 scores 452 against the Core 7’s 106, a -76.5% delta, the most lopsided result in the entire comparison. Floating_point_math also shows a dramatic gap, with the Ultra 5 at 159824 versus 65094, a -59.3% difference. The data_encryption test shows a -55.9% delta (41292 vs 18206), while extended_instructions shows -59.6% (42880 vs 17318). These results indicate that the desktop processor’s newer architecture and higher power envelope translate into substantially better throughput for compute-intensive operations.

Not every gap is as wide. The passmark_integer_math test shows the Ultra 5 at 123030 versus the Core 7’s 99100, a -19.5% delta, which is the smallest margin outside of the single-thread tests. This indicates that the mobile chip’s 14 cores and 20 threads can still deliver respectable integer performance, even against a much larger desktop part. Similarly, the multithread test shows a -46.1% delta (50146 vs 27030), and the physics test shows -42.7% (3183 vs 1824), both significant but not as extreme as the Cinebench multicore results. The data_compression test shows a -45.2% delta (553155 vs 303269), and random_string_sorting shows -49.2% (67209 vs 34136), both reinforcing the pattern of a clear but workload-dependent advantage for the desktop chip.

Architecture Differences

The two processors are built on fundamentally different designs. The Intel Core 7 250H uses the Raptor Lake architecture, specifically Raptor Lake-H, and is manufactured on a 10 nm process at Intel’s own foundry. It features 14 cores and 20 threads, with a base clock of 2.50 GHz and a boost clock of 5.40 GHz. Its cache hierarchy includes 80 KB of L1 per core, 2 MB of L2 per core, and 24 MB of shared L3 cache. The chip supports both DDR4 and DDR5 memory in a dual-channel configuration and includes integrated Iris Xe Graphics with 96 execution units. It is designed for the mobile segment, uses the Intel BGA 1744 socket, and has a TDP of 45 watts.

The Intel Core Ultra 5 250KF Plus is a desktop part from the Arrow Lake Refresh generation, built on a 3 nm process at TSMC. It has 18 cores and 18 threads, with a base clock of 4.20 GHz and a boost clock of 5.30 GHz. The cache hierarchy is larger across the board: 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3 cache. It supports only DDR5 memory in a dual-channel configuration with a memory bandwidth of 115.2 GB/s. The chip has no integrated graphics, uses the Intel Socket 1851, and has a TDP of 125 watts. It also includes 17,800 million transistors on a 243 mm² die and supports ECC memory.

The most consequential differences are the process node (3 nm vs 10 nm), the core configuration (18 cores with no hyper-threading vs 14 cores with 20 threads), and the power envelope (125 watts vs 45 watts). The desktop part also offers 20 PCIe Gen 5 lanes from the CPU, compared to 8 lanes on the mobile chip, which is a significant advantage for expansion and discrete GPU connectivity. The mobile chip’s integrated graphics is a key feature for laptops, while the desktop part requires a separate GPU.

FAQ

Q: Which processor has a higher boost clock?

A: The Intel Core 7 250H has a boost clock of 5.40 GHz, which is higher than the Core Ultra 5 250KF Plus’s 5.30 GHz.

Q: How many cores does each processor have?

A: The Intel Core 7 250H has 14 cores and 20 threads. The Intel Core Ultra 5 250KF Plus has 18 cores and 18 threads.

Q: What is the difference in average benchmark scores?

A: The Intel Core Ultra 5 250KF Plus has an average benchmark score of 66159, while the Intel Core 7 250H has an average score of 35728. The Ultra 5 also sits in the 93rd percentile of all CPUs, compared to the Core 7’s 85th percentile.

Q: Which processor supports ECC memory?

A: The Intel Core Ultra 5 250KF Plus supports ECC memory. The Intel Core 7 250H does not.

Q: What are the TDP ratings for these chips?

A: The Intel Core 7 250H has a TDP of 45 watts, while the Intel Core Ultra 5 250KF Plus has a TDP of 125 watts.

Q: Which processor has integrated graphics?

A: The Intel Core 7 250H includes Iris Xe Graphics with 96 execution units. The Intel Core Ultra 5 250KF Plus has no integrated graphics.

The Verdict

The data is unambiguous: the Intel Core Ultra 5 250KF Plus is the faster processor in every measured benchmark. Its average benchmark score of 66159 is nearly double the Core 7 250H’s 35728, and it wins all 17 head-to-head tests with deltas ranging from -11.7% to -76.5%. The desktop chip’s 93rd percentile ranking versus the mobile chip’s 85th percentile confirms its higher standing in the overall performance hierarchy. The Core 7 250H is not a weak processor, but it is designed for a different purpose, and the benchmark results reflect that.

The Core Ultra 5 250KF Plus is the clear choice for anyone building a desktop system where raw performance is the priority. Its lead in Cinebench multicore tests, PassMark integer math, and extended instructions makes it suitable for rendering, compilation, and other demanding workloads. The Core 7 250H, with its 45-watt TDP and integrated graphics, is the only option here for a mobile platform, and it delivers solid performance for a laptop chip, particularly in single-threaded tasks where its boost clock helps narrow the gap.

Specification Differences

• Cores: 14 (Core 7 250H) vs 18 (Core Ultra 5 250KF Plus)
• Threads: 20 vs 18
• Base Clock: 2.50 GHz vs 4.20 GHz
• Boost Clock: 5.40 GHz vs 5.30 GHz
• TDP: 45 watts vs 125 watts
• Socket: Intel BGA 1744 vs Intel Socket 1851
• Process Node: 10 nm vs 3 nm
• Foundry: Intel vs TSMC
• L1 Cache: 80 KB per core vs 192 KB per core
• L2 Cache: 2 MB per core vs 3 MB per core
• L3 Cache: 24 MB shared vs 30 MB shared
• Memory Support: DDR4, DDR5 vs DDR5 only
• Memory Bandwidth: Not specified vs 115.2 GB/s
• ECC Memory: No vs Yes
• PCIe Lanes: Gen 5, 8 Lanes vs Gen 5, 20 Lanes
• Integrated Graphics: Iris Xe Graphics 96EU vs N/A
• Market Segment: Mobile vs Desktop
• Unlocked Multiplier: No vs Yes
• Release Date: 2024-12-17 vs 2026-03-10

Where Each One Wins

The Intel Core Ultra 5 250KF Plus wins in every single recorded benchmark, so the question of where each one wins is defined by the degree of its dominance. The desktop chip’s largest wins are in multi-threaded rendering and compute-heavy tasks. In Cinebench R23 multicore, it beats the Core 7 250H by 61.2%, and in find_prime_numbers, it leads by 76.5%. These results make it the superior choice for video rendering, 3D modeling, scientific computing, and any workload that can utilize all 18 cores.

The Core Ultra 5 250KF Plus also wins decisively in floating_point_math (59.3% ahead), extended_instructions (59.6% ahead), and data_encryption (55.9% ahead), indicating a strong advantage in financial modeling, data analysis, and encryption workloads. Its smaller wins in passmark_integer_math (19.5% ahead) and passmark_single_thread (11.7% ahead) still represent clear victories, but they show that the Core 7 250H is comparatively more competitive in these areas.

The Intel Core 7 250H’s only wins are contextual. It is the only one of the two with integrated graphics, making it the sole option for a system without a discrete GPU. It also has a higher boost clock, which helps it stay closer in single-threaded performance. Its 45-watt TDP means it is the only chip here suitable for a laptop or a compact, low-power build. In terms of raw benchmark scores, it does not win any test, but its mobile design and integrated GPU give it a specific use case that the desktop part simply cannot fill. The desktop chip requires a separate graphics card and a motherboard with Socket 1851, while the mobile chip is a complete package for a portable system.