Intel Core 7 251E vs Intel Core Ultra 5 336H Comparison

Where Each One Wins

The recorded data presents a clear split between the two processors based on market segment and workload type. The Intel Core 7 251E is a desktop part with 24 cores and 32 threads, while the Intel Core Ultra 5 336H is a mobile processor with 16 cores and 16 threads. The benchmark database contains a full suite of results for the Core Ultra 5 336H, including Cinebench R15, R20, and R23 tests plus PassMark workloads. No benchmark scores are listed for the Core 7 251E, so direct head-to-head comparisons rely on the architectural and specification differences recorded in the database.

The Core Ultra 5 336H achieves an average benchmark score of 34485, placing it at the 84th percentile among all CPUs in the database. Its nearest rivals include the Intel Core i7-13700HX with an average score of 34554 and a delta of -0.2 percent, meaning the 336H trails that part by a negligible margin. The Core i5-13450HX scores 34333, a 0.4 percent advantage for the 336H. The AMD Ryzen 7 3700X scores 34260, with the 336H ahead by 0.7 percent. The AMD Ryzen AI 7 350 scores 34222, and the 336H leads by 0.8 percent. These deltas are all within roughly one percent, indicating that the Core Ultra 5 336H sits in a tightly contested performance band.

The Core 7 251E has no recorded benchmark scores and no nearest rivals in the database. Its percentile ranking of 50 places it at the median of all CPUs, but this value is based on the absence of measured results rather than observed performance. The database records zero wins for each processor in head-to-head tests, as no direct benchmark comparisons exist between the two parts.

For workloads focused on multi-threaded throughput, the Core Ultra 5 336H delivers strong results in the recorded data. Its Cinebench R23 multi-core score of 23991 indicates substantial parallel processing capability. The PassMark multithread score of 28545 reinforces this picture. Single-thread performance is also competitive, with a Cinebench R23 single-core score of 3387 and a PassMark single-thread score of 4013.

The Core 7 251E, by contrast, has no measured scores to analyze. Its advantage lies in its desktop-oriented configuration, which includes a higher base clock of 2.10 GHz, a boost clock of 5.60 GHz, and a thermal design power of 65 watts. The Core Ultra 5 336H operates at a base clock of 1.90 GHz, boosts to 4.60 GHz, and has a 25-watt TDP. The desktop part offers a larger shared L3 cache of 36 MB versus 18 MB on the mobile chip, and it supports ECC memory while the mobile part does not.

Architecture Differences

The two processors belong to different Intel generations and use distinct silicon designs. The Core 7 251E is built on the Bartlett Lake codename with a 10 nm process node, fabricated by Intel. Its die size is recorded as 257 mm². The Core Ultra 5 336H uses the Panther Lake architecture with a 3 nm process node, also fabricated by Intel, but no die size is recorded for this part.

The core and thread counts differ significantly. The Core 7 251E provides 24 cores and 32 threads, suggesting a hybrid configuration with performance and efficiency cores. The Core Ultra 5 336H provides 16 cores and 16 threads, indicating no hyper-threading support on this mobile part. The per-core cache structure also differs. The Core 7 251E has 80 KB of L1 cache per core and 2 MB of L2 cache per core. The Core Ultra 5 336H has 192 KB of L1 per core and 2.5 MB of L2 per core. The shared L3 cache is 36 MB on the desktop chip versus 18 MB on the mobile chip.

The integrated graphics differ as well. The Core 7 251E uses UHD Graphics 770, while the Core Ultra 5 336H features Intel Xe3 Graphics. Memory support shows a split: the desktop part supports DDR4 and DDR5, while the mobile part supports DDR5 and LPDDR5X. The memory bus is dual-channel for both, but memory bandwidth differs. The Core 7 251E achieves 89.6 GB/s, while the Core Ultra 5 336H reaches 115.2 GB/s. The mobile part benefits from faster memory technology despite having a smaller cache pool.

PCIe connectivity differs. The Core 7 251E provides Gen 5 with 16 lanes from the CPU, while the Core Ultra 5 336H provides Gen 5 with 12 lanes. The sockets are different: Intel Socket 1700 for the desktop part and Intel BGA 2540 for the mobile part. The release dates show the Core 7 251E launched on 2025-01-12, while the Core Ultra 5 336H launched on 2026-01-04. Both parts are currently active in production, and neither has an unlocked multiplier.

Head-to-Head Benchmarks

The database lists no direct head-to-head benchmark results between the Core 7 251E and the Core Ultra 5 336H. The wins counter shows zero for both processors. However, the Core Ultra 5 336H has a full set of recorded scores that can be interpreted against its nearest rivals.

In Cinebench R15 multi-core, the Core Ultra 5 336H scores 2418. The single-core score is 341. In Cinebench R20, multi-core reaches 10076 and single-core reaches 1422. The R23 results show a multi-core score of 23991 and a single-core score of 3387. These numbers indicate a strong balance between single-threaded responsiveness and multi-threaded throughput for a mobile processor.

PassMark results for the Core Ultra 5 336H cover a range of workloads. Data compression scores 280340, data encryption scores 21291, and extended instructions score 24542. Finding prime numbers scores 299, floating point math scores 82415, and integer math scores 62070. The multithread score is 28545, physics scores 2682, and random string sorting scores 34402. The single-thread score is 4013, recorded twice in the database with identical values.

The nearest rival comparisons show tight margins. The Intel Core i7-13700HX has an average score of 34554, which is 0.2 percent higher than the 336H. The Intel Core i5-13450HX scores 34333, putting the 336H 0.4 percent ahead. The AMD Ryzen 7 3700X scores 34260, with the 336H leading by 0.7 percent. The AMD Ryzen AI 7 350 scores 34222, and the 336H leads by 0.8 percent. These deltas suggest that the Core Ultra 5 336H performs essentially on par with the i7-13700HX while slightly outpacing the other three rivals.

The Core 7 251E has no benchmark scores to compare directly. Its average benchmark score is recorded as zero, and its percentile of 50 reflects the lack of measured data rather than a performance estimate. The database provides no basis for quantifying its performance against the Core Ultra 5 336H or any other processor.

Specification Differences

The core counts differ: the Core 7 251E has 24 cores, while the Core Ultra 5 336H has 16 cores. Thread counts are 32 versus 16. The base clocks are 2.10 GHz for the desktop part and 1.90 GHz for the mobile part. Boost clocks are 5.60 GHz and 4.60 GHz, respectively. The thermal design power is 65 watts for the Core 7 251E and 25 watts for the Core Ultra 5 336H.

The sockets differ: Intel Socket 1700 for the desktop chip and Intel BGA 2540 for the mobile chip. The process nodes are 10 nm and 3 nm, respectively. The codenames are Bartlett Lake and Panther Lake. The architectures are listed as null for the Core 7 251E and Panther Lake for the Core Ultra 5 336H. The generations are recorded as Core 7 (Bartlett Lake) and Ultra 5 (Panther Lake-H).

Cache configurations differ in all three levels. The L1 cache is 80 KB per core on the desktop part versus 192 KB per core on the mobile part. The L2 cache is 2 MB per core versus 2.5 MB per core. The L3 cache is 36 MB shared versus 18 MB shared. The die size is 257 mm² for the Core 7 251E, with no die size recorded for the Core Ultra 5 336H.

Memory support differs: the desktop part supports DDR4 and DDR5, while the mobile part supports DDR5 and LPDDR5X. Memory bandwidth is 89.6 GB/s for the desktop chip and 115.2 GB/s for the mobile chip. ECC memory support is true for the Core 7 251E and false for the Core Ultra 5 336H. PCIe lanes are 16 for the desktop part and 12 for the mobile part, both Gen 5.

The integrated graphics differ: UHD Graphics 770 on the desktop part versus Intel Xe3 Graphics on the mobile part. The market segments are Desktop and Mobile, respectively. The release dates are 2025-01-12 for the Core 7 251E and 2026-01-04 for the Core Ultra 5 336H. The launch MSRP for the Core 7 251E is $384, stated once here. No launch MSRP is recorded for the Core Ultra 5 336H. The part numbers are SRQDUQ657 for the desktop chip and SA4RD for the mobile chip.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core 7 251E has 24 cores and 32 threads. The Intel Core Ultra 5 336H has 16 cores and 16 threads.

Q: What is the performance percentile of the Core Ultra 5 336H?

A: The Core Ultra 5 336H ranks at the 84th percentile among all CPUs in the database, with an average benchmark score of 34485.

Q: How does the Core Ultra 5 336H compare to its nearest rivals?

A: It trails the Intel Core i7-13700HX by 0.2 percent, leads the Intel Core i5-13450HX by 0.4 percent, leads the AMD Ryzen 7 3700X by 0.7 percent, and leads the AMD Ryzen AI 7 350 by 0.8 percent.

Q: What memory types does each processor support?

A: The Core 7 251E supports DDR4 and DDR5. The Core Ultra 5 336H supports DDR5 and LPDDR5X. Both use a dual-channel memory bus.

Q: Does the Core Ultra 5 336H support ECC memory?

A: No, the Core Ultra 5 336H does not support ECC memory. The Core 7 251E does support ECC memory.

Q: What are the integrated graphics on each processor?

A: The Core 7 251E uses UHD Graphics 770. The Core Ultra 5 336H uses Intel Xe3 Graphics.

Q: What is the boost clock for each processor?

A: The Core 7 251E boosts to 5.60 GHz. The Core Ultra 5 336H boosts to 4.60 GHz.