Intel Core Ultra 5 250K Plus vs Intel Core Ultra 7 265H Comparison

FAQ

Q: How do the two processors compare in overall average benchmark score?

A: The Intel Core Ultra 5 250K Plus records an average benchmark score of 66855, while the Intel Core Ultra 7 265H scores 41621. The desktop chip sits in the 93rd percentile of all CPUs, whereas the mobile chip lands in the 88th percentile.

Q: Which processor wins in multi-core workloads?

A: The Core Ultra 5 250K Plus wins every multi-core test in the database. Its Cinebench R23 multi-core score of 30867 is 54.8% ahead of the 265H's 19940. PassMark multithread results show 51596 versus 34027, a 51.6% advantage.

Q: Is the single-core performance gap as large as the multi-core gap?

A: No, the single-core advantage is narrower but still favors the Core Ultra 5 250K Plus. Cinebench R23 single-core shows 2261 versus 2080, an 8.7% lead. PassMark single-thread results show 4757 versus 4334, a 9.8% difference.

Q: What are the core and thread configurations of each chip?

A: The Core Ultra 5 250K Plus has 18 cores and 18 threads. The Core Ultra 7 265H has 16 cores and 16 threads. Neither processor uses simultaneous multithreading.

Q: Which chip offers higher memory bandwidth?

A: The Core Ultra 5 250K Plus provides 115.2 GB/s of memory bandwidth over dual-channel DDR5. The Core Ultra 7 265H delivers 102.4 GB/s, also dual-channel, but supports both DDR5 and LPDDR5X memory.

Q: Do both processors use the same manufacturing process?

A: Yes, both are built on TSMC's 3 nm process node. The Core Ultra 5 250K Plus is fabricated with 17,800 million transistors on a 243 mm² die, while the Core Ultra 7 265H does not have transistor or die size data recorded.

The Verdict

The recorded data presents a unidirectional performance relationship. The Intel Core Ultra 5 250K Plus wins all 17 head-to-head benchmark comparisons, with zero wins recorded for the Intel Core Ultra 7 265H. The desktop chip's average score of 66855 places it 60.6% above the mobile chip's 41621 average.

The Core Ultra 5 250K Plus is the appropriate selection for workloads demanding maximum throughput. Its Cinebench R23 multi-core result of 30867 exceeds the 265H's 19940 by a substantial margin, and the PassMark multithread score of 51596 versus 34027 confirms the pattern. The desktop part also carries a 125 W TDP, an unlocked multiplier, and 20 PCIe Gen 5 lanes, positioning it for high-end desktop builds.

The Core Ultra 7 265H serves a different role. Its 28 W TDP, BGA 2049 socket, and mobile market segment indicate a platform designed for laptops. The 16-core configuration still delivers respectable results, with a Cinebench R23 multi-core score of 19940 and an average benchmark score of 41621, placing it in the 88th percentile of all CPUs. Its nearest rival, the Intel Core 7 251TE, sits within 0.1% of its average score.

For a desktop system where power constraints are not the primary concern, the data supports the Core Ultra 5 250K Plus without qualification. For a mobile platform requiring integrated graphics with Arc Graphics 140T and LPDDR5X memory support, the Core Ultra 7 265H represents the only viable choice of these two parts, as the 250K Plus uses the Intel Socket 1851 and cannot be installed in a notebook.

Head-to-Head Benchmarks

The benchmark database records a clean sweep for the Core Ultra 5 250K Plus across all 17 tests. The widest margins appear in data compression and random string sorting. PassMark data compression shows 568721 for the desktop chip versus 334711 for the mobile chip, a 69.9% advantage. Random string sorting delivers 69090 versus 40742, a 69.6% gap. Data encryption follows at 62.1% ahead, with scores of 42144 and 26005 respectively.

Compute-heavy workloads show similarly large deltas. Extended instructions testing records 44565 versus 26805, a 66.3% lead. Cinebench R15 multi-core shows 4640 versus 2989, a 55.2% advantage. Cinebench R20 multi-core delivers 18442 versus 12131, a 52% gap, and Cinebench R23 multi-core confirms the trend at 54.8% ahead. PassMark multithread results show 51596 versus 34027, a 51.6% difference.

Integer and floating-point math also favor the desktop chip, though by slightly smaller margins. Floating-point math shows 162692 versus 109123, a 49.1% lead. Integer math records 125091 versus 85479, a 46.3% advantage. Prime number finding shows 486 versus 335, a 45.1% gap. Physics testing delivers 3494 versus 2497, a 39.9% margin.

The single-core results are far closer, indicating that the architectural efficiency of the two chips is comparable. Cinebench R15 single-core shows 328 versus 307, a 6.8% lead. Cinebench R20 single-core records 2603 versus 1712, a 52% gap that appears anomalous compared to the other single-core tests. Cinebench R23 single-core shows 2261 versus 2080, an 8.7% difference. PassMark single-thread results record 4757 versus 4334, a 9.8% gap.

The consistent 50% to 70% multi-core advantages reflect the desktop chip's higher core count, higher base clock, and higher power envelope. The 18-core 250K Plus at 4.20 GHz base clock and 5.30 GHz boost operates within a 125 W TDP. The 16-core 265H at 2.20 GHz base and 5.30 GHz boost operates within a 28 W TDP. The boost clocks are identical at 5.30 GHz, which explains the narrower single-core deltas.

Specification Differences

The two processors diverge on nearly every platform-level specification. The Core Ultra 5 250K Plus uses Intel Socket 1851, while the Core Ultra 7 265H uses Intel BGA 2049. The desktop chip has 18 cores and 18 threads; the mobile chip has 16 cores and 16 threads. Base clock rates differ substantially: 4.20 GHz for the 250K Plus versus 2.20 GHz for the 265H. Boost clocks match at 5.30 GHz for both.

TDP ratings represent the largest operational difference. The 250K Plus carries a 125 W TDP, while the 265H is rated at 28 W. This 97 W difference explains the sustained multi-core performance gap. The desktop part also features an unlocked multiplier, whereas the mobile part is locked.

Memory support differs in type and bandwidth. The 250K Plus supports DDR5 only, with 115.2 GB/s bandwidth. The 265H supports DDR5 and LPDDR5X, with 102.4 GB/s bandwidth. Both use dual-channel memory buses, and both support ECC memory.

PCIe lane counts differ significantly. The 250K Plus provides 20 PCIe Gen 5 lanes from the CPU. The 265H provides 8 PCIe Gen 5 lanes. This affects expansion capability for GPUs, NVMe storage, and other add-in devices.

Integrated graphics also differ. The 250K Plus uses Arc Xe-LPG Graphics with 64 execution units. The 265H uses Arc Graphics 140T. The release dates are separated by roughly 14 months, with the 265H released in January 2025 and the 250K Plus in March 2026. The 250K Plus has a launch MSRP of $199.

Architecture Differences

Both processors belong to the Core Ultra Series 2 and share the Arrow Lake architectural lineage. The 250K Plus carries the codename Arrow Lake Refresh and is classified under the Ultra 5 generation. The 265H uses the Arrow Lake codename with the Arrow Lake-H generation designation.

The manufacturing process is identical: TSMC's 3 nm node. The 250K Plus reports 17,800 million transistors on a 243 mm² die. The 265H does not have recorded transistor or die size data. The foundry for both is TSMC.

Cache hierarchies share the same per-core structure. Both chips provide 192 KB of L1 cache per core and 3 MB of L2 cache per core. The shared L3 cache differs: the 250K Plus has 30 MB, while the 265H has 24 MB. This 6 MB difference in last-level cache contributes to the desktop chip's performance advantage in cache-sensitive workloads.

The market segments are fundamentally different. The 250K Plus is a desktop processor with an active production status and part number SA4UZ. The 265H is a mobile processor, also active, with part number SRQAQ. These designations affect socket compatibility, thermal solutions, and platform integration.

The architecture differences are primarily about power delivery and scaling. The 250K Plus operates at a 125 W TDP with a 4.20 GHz base clock, allowing sustained high-frequency operation across all 18 cores. The 265H operates at 28 W with a 2.20 GHz base clock, requiring the boost to 5.30 GHz for peak performance but limiting sustained throughput. The identical 5.30 GHz boost clock suggests the same core microarchitecture, while the base clock and TDP differences reflect the thermal and power constraints of each platform.