Intel Core Ultra 5 250K Plus vs Intel Processor U303L Comparison

Intel Core Ultra 5 250K Plus vs Intel Processor U303L

The Intel Core Ultra 5 250K Plus and the Intel Processor U303L occupy entirely different segments of the processor market, as reflected in their recorded benchmarks and specifications. The Core Ultra 5 250K Plus is a desktop part with 18 cores, a boost clock of 5.30 GHz, and a 125 TDP, while the Intel Processor U303L is a mobile-oriented chip with 5 cores, a maximum clock of 2.60 GHz, and a 15 TDP. The benchmark database contains a full suite of scores for the Core Ultra 5 250K Plus, whereas the U303L has no recorded benchmark results, making direct numerical comparisons impossible. The analysis below relies on the available data for the Core Ultra 5 250K Plus, its nearest rivals, and the architectural specifications of both processors.

Head-to-Head Benchmarks

The database records no head-to-head benchmark entries between the Intel Core Ultra 5 250K Plus and the Intel Processor U303L. The U303L has an empty benchmark list, meaning no Cinebench or PassMark scores exist for this processor. Consequently, the only quantitative performance data available belongs to the Core Ultra 5 250K Plus, which delivers strong results across all recorded tests.

For the Core Ultra 5 250K Plus, the Cinebench R23 multi-core score reaches 30867, while the single-core score is 2261. In Cinebench R20, the multi-core result is 18442, and the single-core result is 2603. The older Cinebench R15 test shows a multi-core score of 4640 and a single-core score of 328. These figures indicate a processor capable of both high thread throughput and strong single-thread responsiveness, with the multi-core advantage being particularly pronounced.

PassMark results for the Core Ultra 5 250K Plus include a multi-thread score of 51596 and a single-thread score of 4757. The floating-point math score is 162692, while integer math reaches 125091. Data compression scores 568721, data encryption scores 42144, and extended instructions (SIMD) score 44565. Random string sorting completes at 69090, physics simulation scores 3494, and prime number finding scores 486. These numbers show a processor that excels in heavily parallel workloads, with the multi-thread score being roughly eleven times higher than the single-thread score.

The average benchmark score for the Core Ultra 5 250K Plus is 66855, placing it in the 93rd percentile of all CPUs in the database. Its nearest rivals are the AMD EPYC 4465P with an average score of 66925, the Intel Xeon 6515P at 67006, the Intel Core Ultra 9 275HX at 67469, and the Intel Core Ultra 5 250KF Plus at 66159. The delta percentages show the Core Ultra 5 250K Plus trails the EPYC 4465P by 0.1%, trails the Xeon 6515P by 0.2%, trails the Core Ultra 9 275HX by 0.9%, and leads the Core Ultra 5 250KF Plus by 1.1%. These margins are narrow, indicating that the Core Ultra 5 250K Plus performs at a level comparable to those server and high-end mobile parts, with no single rival holding a decisive edge.

The U303L, by contrast, has no benchmark scores and thus no average score or percentile rating beyond the 50th percentile listed in the database, which likely reflects its modest specifications rather than measured performance. Without recorded data, any head-to-head comparison must remain qualitative, based on core counts, clock speeds, and cache sizes.

Architecture Differences

The two processors differ fundamentally in architecture, process node, and intended platform. The Intel Core Ultra 5 250K Plus belongs to the Core Ultra Series 2, uses the Arrow Lake Refresh codename, and is built on a 3 nm process at TSMC. It contains 17,800 million transistors on a 243 mm² die. The processor has 18 cores and 18 threads, with no hyper-threading. Its base clock is 4.20 GHz, and the boost clock reaches 5.30 GHz. The cache hierarchy includes 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3 cache. Memory support is DDR5 with a dual-channel bus and a recorded bandwidth of 115.2 GB/s. ECC memory is supported. The PCIe interface is Gen 5 with 20 lanes from the CPU. Integrated graphics are Arc Xe-LPG with 64 execution units. The socket is Intel Socket 1851, and the multiplier is unlocked, allowing overclocking. The production status is active, with a release date of 2026-03-10.

The Intel Processor U303L uses the Raptor Lake architecture with the Raptor Lake-PS codename. It is fabricated on a 10 nm process at Intel. The processor has 5 cores and 6 threads, indicating that one core supports hyper-threading. The base clock is 1.20 GHz, and the boost clock is 2.60 GHz. Cache sizes are smaller: 80 KB of L1 per core, 1.25 MB of L2 per core, and 12 MB of shared L3 cache. Memory support includes both DDR4 and DDR5, with a dual-channel bus. No memory bandwidth figure is recorded. ECC memory is not supported. The PCIe interface is Gen 4 with 8 lanes from the CPU. Integrated graphics are UHD Graphics with 96 execution units, a higher EU count than the Core Ultra 5 250K Plus despite the latter being a newer part. The socket is Intel Socket 1700, and the multiplier is locked. The production status is active, with a release date of 2024-04-07.

The process node difference is stark: 3 nm versus 10 nm, giving the Core Ultra 5 250K Plus a significant transistor density advantage. The Core Ultra 5 250K Plus also has more than three times the cores, nearly double the L3 cache (30 MB versus 12 MB), and a much higher clock speed. The U303L, however, supports DDR4 memory, which the Core Ultra 5 250K Plus does not, and offers more integrated graphics execution units (96 versus 64). The U303L is a mobile part with a 15 TDP, while the Core Ultra 5 250K Plus is a desktop part with a 125 TDP, a difference that explains the clock and core disparities.

The launch MSRP for the Core Ultra 5 250K Plus is $199, while the U303L has a launch MSRP of $285. This pricing inversion is notable given the Core Ultra 5 250K Plus’s superior core count and performance, but the U303L’s mobile form factor and lower power envelope may justify its position in the database.

Where Each One Wins

Based on the recorded data, the Intel Core Ultra 5 250K Plus wins decisively in every measurable performance category. Its 18 cores and 18 threads, combined with a 5.30 GHz boost clock, produce Cinebench R23 multi-core scores of 30867 and single-core scores of 2261. The U303L, with 5 cores and 6 threads and a maximum clock of 2.60 GHz, would struggle to approach these numbers, though no direct benchmarks exist to quantify the gap. The Core Ultra 5 250K Plus’s 30 MB L3 cache and 115.2 GB/s memory bandwidth further support demanding workloads such as data compression and encryption, where it scores 568721 and 42144 respectively.

The U303L wins in areas related to power efficiency and platform flexibility. Its 15 TDP is dramatically lower than the Core Ultra 5 250K Plus’s 125 TDP, making it suitable for passively cooled or battery-powered systems. The U303L supports both DDR4 and DDR5 memory, offering upgrade paths for older platforms, while the Core Ultra 5 250K Plus requires DDR5 exclusively. The U303L’s UHD Graphics 96EU has more execution units than the Arc Xe-LPG 64EU in the Core Ultra 5 250K Plus, which could provide better integrated graphics performance for media playback or light gaming, though no benchmark scores confirm this.

For multi-threaded workloads such as rendering, simulation, or compilation, the Core Ultra 5 250K Plus is the clear choice based on its Cinebench and PassMark multi-core scores. For single-threaded tasks, the Core Ultra 5 250K Plus’s 5.30 GHz boost clock and 4757 PassMark single-thread score indicate strong responsiveness. The U303L, with no recorded scores, cannot be positioned as a performance leader in any tested category. Its strengths lie in its low power draw, memory compatibility, and integrated graphics EU count, which are qualitative advantages not reflected in the benchmark database.

The Verdict

The data shows that the Intel Core Ultra 5 250K Plus is a high-performance desktop processor, ranking in the 93rd percentile of all CPUs with an average benchmark score of 66855. Its nearest rivals, including the AMD EPYC 4465P and Intel Xeon 6515P, show delta percentages of -0.1% and -0.2%, meaning the Core Ultra 5 250K Plus is statistically tied with those server-class parts. The Core Ultra 5 250KF Plus, a similar variant, trails by 1.1%, confirming the 250K Plus’s position at the top of its immediate lineup.

The Intel Processor U303L has no benchmark data, making it impossible to state a performance verdict from measurements. Its specifications indicate a low-power mobile processor intended for efficiency rather than speed. The 5-core, 6-thread configuration and 2.60 GHz boost clock place it in a different class entirely. The U303L’s 50th percentile rating in the database, while lacking an average score, suggests an average position among all CPUs, but this is not supported by recorded benchmarks.

For users requiring maximum multi-threaded throughput, the Core Ultra 5 250K Plus delivers Cinebench R23 multi-core scores of 30867 and PassMark multi-thread scores of 51596. For users needing a low-power mobile processor with DDR4 and DDR5 support and a higher integrated graphics EU count, the U303L offers those features, but its performance cannot be quantified from the database. The Core Ultra 5 250K Plus is the only processor here with measured performance, and it performs exceptionally well.

FAQ

Q: Does the Intel Core Ultra 5 250K Plus have more cores than the Intel Processor U303L?

A: Yes. The Core Ultra 5 250K Plus has 18 cores and 18 threads, while the U303L has 5 cores and 6 threads.

Q: What is the maximum boost clock for each processor?

A: The Core Ultra 5 250K Plus boosts to 5.30 GHz, while the U303L boosts to 2.60 GHz.

Q: Which processor supports ECC memory?

A: The Core Ultra 5 250K Plus supports ECC memory. The U303L does not.

Q: What are the launch MSRP values for these processors?

A: The Core Ultra 5 250K Plus has a launch MSRP of $199, and the U303L has a launch MSRP of $285.

Q: Which processor has a higher integrated graphics execution unit count?

A: The U303L has UHD Graphics with 96 execution units, while the Core Ultra 5 250K Plus has Arc Xe-LPG Graphics with 64 execution units.

Q: What is the process node for each processor?

A: The Core Ultra 5 250K Plus is built on a 3 nm process at TSMC, while the U303L is built on a 10 nm process at Intel.

Q: Does the Core Ultra 5 250K Plus support DDR4 memory?

A: No. The Core Ultra 5 250K Plus supports DDR5 only. The U303L supports both DDR4 and DDR5.