Intel Core 7 251E vs Intel Core Ultra 7 255H Comparison
Intel Core 7 251E
Core Ultra 7 255H
PERFORMANCE BENCHMARKS
Analysis: Intel Core 7 251E vs Intel Core Ultra 7 255H
Head-to-Head Benchmarks
The database contains no shared benchmark submissions for the Intel Core 7 251E and the Intel Core Ultra 7 255H. Consequently, direct score-to-score comparisons cannot be derived from recorded measurements.
However, the Intel Core Ultra 7 255H has a substantial set of recorded benchmark results. Its average benchmark score is 33537, and its percentile versus all CPUs is 83. The Intel Core 7 251E shows an average benchmark score of 0 and a percentile versus all CPUs of 50, indicating that no performance data has been logged for this desktop part in the database.
For the Core Ultra 7 255H, the recorded Cinebench R23 multi-core score is 9240, while its single-core score is 1843. In Cinebench R20, the multi-core result is 6381 and the single-core result is 900. Cinebench R15 shows a multi-core score of 1515 and a single-core score of 251. Geekbench results for the Core Ultra 7 255H are 14024 in multi-core and 2335 in single-core.
PassMark results for the Core Ultra 7 255H span several workloads. The multi-thread score is 30703, and the single-thread score is 4317. Data compression produces 298850, data encryption produces 23395, and extended instructions produce 23755. The prime number finding test scores 303, floating-point math scores 98796, and integer math scores 77975. Physics testing yields 2254, and random string sorting yields 36058.
The nearest rivals for the Core Ultra 7 255H provide context for these numbers. The AMD Ryzen 5 240 has an average score of 33542, a delta of 0 percent from the Core Ultra 7 255H. The AMD Ryzen 7 8840HS and AMD Ryzen 5 7645HX both average 33667 and 33668 respectively, each sitting 0.4 percent behind the Core Ultra 7 255H. The Intel Core i5-12600HX averages 33375, which is 0.5 percent ahead of the Core Ultra 7 255H. These deltas show the Core Ultra 7 255H sits in a tight performance cluster, within half a percentage point of all four rivals.
FAQ
Q: Which processor has a higher boost clock?
A: The Intel Core 7 251E reaches a boost clock of 5.60 GHz, while the Intel Core Ultra 7 255H boosts to 5.10 GHz. The Core 7 251E leads by 0.5 GHz.
Q: How do the core counts differ between the two chips?
A: The Intel Core 7 251E has 24 cores and 32 threads. The Intel Core Ultra 7 255H has 16 cores and 16 threads. The Core 7 251E provides 8 more cores and 16 more threads.
Q: What is the process node for each processor?
A: The Intel Core 7 251E uses a 10 nm process from Intel. The Intel Core Ultra 7 255H uses a 3 nm process from TSMC.
Q: What memory types does each processor support?
A: The Intel Core 7 251E supports DDR4 and DDR5 memory. The Intel Core Ultra 7 255H supports DDR5 and LPDDR5X memory. Both use dual-channel memory buses.
Q: What integrated graphics are present in each chip?
A: The Intel Core 7 251E integrates UHD Graphics 770. The Intel Core Ultra 7 255H integrates Arc Graphics 140T.
Q: What are the socket types for these processors?
A: The Intel Core 7 251E uses Intel Socket 1700. The Intel Core Ultra 7 255H uses Intel BGA 2049. The Core 7 251E is a desktop part, and the Core Ultra 7 255H is a mobile part.
Where Each One Wins
The Intel Core 7 251E wins on raw thread count and peak frequency. With 24 cores and 32 threads versus 16 cores and 16 threads, the Core 7 251E provides a 50 percent core advantage and a 100 percent thread advantage. Its boost clock of 5.60 GHz exceeds the Core Ultra 7 255H by 0.5 GHz. The base clock is also higher at 2.10 GHz versus 2.00 GHz. For workloads that scale with core and thread counts, such as heavily parallel rendering or compilation tasks, the Core 7 251E has a structural advantage in the specification sheet.
The Core 7 251E also carries a larger shared L3 cache at 36 MB versus 24 MB on the Core Ultra 7 255H. This larger pool of shared cache can benefit workloads with large working sets that repeatedly access the same data. The per-core L2 cache is smaller on the Core 7 251E at 2 MB per core versus 3 MB per core on the Core Ultra 7 255H, a difference that may favor the Core Ultra 7 255H in single-threaded loops with high per-core locality.
The Intel Core Ultra 7 255H wins in the recorded benchmark database. Its average benchmark score of 33537 places it at the 83rd percentile among all CPUs, while the Core 7 251E sits at the 50th percentile with no logged benchmarks. The Core Ultra 7 255H also delivers a higher memory bandwidth of 102.4 GB/s versus 89.6 GB/s for the Core 7 251E. The Core Ultra 7 255H uses a smaller 3 nm process node from TSMC versus the 10 nm node from Intel, which typically indicates better power efficiency per transistor.
For mobile use cases, the Core Ultra 7 255H is the only viable option because it is a mobile part with a 28 W TDP. The Core 7 251E has a 65 W TDP and is a desktop part. The Core Ultra 7 255H also provides more PCIe lanes at Gen 5 with 20 lanes versus 16 lanes on the Core 7 251E. The Arc Graphics 140T integrated GPU in the Core Ultra 7 255H is a more modern graphics solution than UHD Graphics 770 in the Core 7 251E.
Specification Differences
The two processors differ in core count, thread count, clock speeds, TDP, socket, process node, foundry, die size, cache hierarchy, memory support, memory bandwidth, PCIe lanes, integrated graphics, market segment, and part number.
The Intel Core 7 251E has 24 cores and 32 threads. The Intel Core Ultra 7 255H has 16 cores and 16 threads. Base clocks are 2.10 GHz for the Core 7 251E and 2.00 GHz for the Core Ultra 7 255H. Boost clocks are 5.60 GHz and 5.10 GHz respectively. The TDP is 65 W for the desktop part and 28 W for the mobile part.
The Core 7 251E uses Intel Socket 1700, while the Core Ultra 7 255H uses Intel BGA 2049. The process node is 10 nm for the Core 7 251E and 3 nm for the Core Ultra 7 255H. The foundry is Intel for the Core 7 251E and TSMC for the Core Ultra 7 255H. The die size is 257 mm² for the Core 7 251E; no die size is recorded for the Core Ultra 7 255H.
Cache configurations differ at every level. The L1 cache is 80 KB per core on the Core 7 251E versus 192 KB per core on the Core Ultra 7 255H. The L2 cache is 2 MB per core versus 3 MB per core. The L3 cache is 36 MB shared versus 24 MB shared.
Memory support differs in type. The Core 7 251E supports DDR4 and DDR5. The Core Ultra 7 255H supports DDR5 and LPDDR5X. Both are dual-channel. Memory bandwidth is 89.6 GB/s for the Core 7 251E and 102.4 GB/s for the Core Ultra 7 255H. Both support ECC memory.
PCIe configurations differ. The Core 7 251E provides Gen 5 with 16 lanes from the CPU. The Core Ultra 7 255H provides Gen 5 with 20 lanes from the CPU. Integrated graphics are UHD Graphics 770 on the Core 7 251E and Arc Graphics 140T on the Core Ultra 7 255H.
The market segment is Desktop for the Core 7 251E and Mobile for the Core Ultra 7 255H. The part numbers are SRQDUQ657 and SRQAN respectively. Both processors have a locked multiplier. The Core 7 251E has a launch MSRP of $384; no launch MSRP is recorded for the Core Ultra 7 255H.
Architecture Differences
The Intel Core 7 251E is based on the Bartlett Lake codename and belongs to the Core 7 (Bartlett Lake) generation. The Intel Core Ultra 7 255H uses the Arrow Lake architecture with the Arrow Lake-H codename and belongs to the Core Ultra Series 2 generation. These are fundamentally different design families from Intel.
The process technology separates the two parts. The Core 7 251E uses a 10 nm node fabricated by Intel. The Core Ultra 7 255H uses a 3 nm node fabricated by TSMC. The smaller node on the Core Ultra 7 255H indicates a more advanced manufacturing process, which typically enables higher transistor density and improved power efficiency.
The core architecture differs in design philosophy. The Core 7 251E offers 24 cores with 32 threads, indicating that some cores support simultaneous multithreading. The Core Ultra 7 255H offers 16 cores with 16 threads, indicating no multithreading on any of its cores. The Core Ultra 7 255H has a larger L1 cache per core at 192 KB versus 80 KB on the Core 7 251E, and a larger L2 cache per core at 3 MB versus 2 MB. The Core 7 251E compensates with a larger shared L3 cache of 36 MB versus 24 MB.
The memory controller differs in supported types. The Core 7 251E supports both DDR4 and DDR5, reflecting its desktop heritage and compatibility with older memory standards. The Core Ultra 7 255H supports DDR5 and LPDDR5X, the latter being a low-power memory type suited for mobile platforms. The Core Ultra 7 255H achieves higher memory bandwidth at 102.4 GB/s versus 89.6 GB/s.
The integrated graphics architecture differs substantially. The Core 7 251E uses UHD Graphics 770, a previous-generation Intel graphics solution. The Core Ultra 7 255H uses Arc Graphics 140T, which belongs to Intel's Arc graphics family and represents a newer graphics architecture. The PCIe implementation also differs, with the Core Ultra 7 255H providing 20 Gen 5 lanes versus 16 on the Core 7 251E.
The power envelope reflects the intended deployment. The Core 7 251E has a 65 W TDP for desktop systems with active cooling. The Core Ultra 7 255H has a 28 W TDP for laptops and compact mobile devices. The Core 7 251E also carries a die size of 257 mm², while no die size is recorded for the Core Ultra 7 255H. Both parts are currently active in production and were released on the same date, January 12, 2025.