Intel Core 7 253PE vs Intel Core Ultra X9 378H Comparison

Where Each One Wins

The benchmark data splits this comparison into a clear primary category and a single, narrow exception. The Intel Core Ultra X9 378H wins 16 of the 17 recorded head-to-head tests, while the Intel Core 7 253PE wins exactly one. That one victory is in PassMark integer math, where the Core 7 253PE posts 114158 against 92603 for the Ultra X9 378H, a 23.3% advantage. This suggests the desktop part has a specific strength in integer-heavy arithmetic workloads, likely related to its higher boost clock and differing core topology.

Everywhere else, the Ultra X9 378H dominates. Its wins span all Cinebench versions (R15, R20, R23) in both single-core and multi-core, plus a wide range of PassMark subtests: data compression, data encryption, extended instructions, prime number finding, floating-point math, multithreading, physics, random string sorting, and single-thread performance. The largest margins occur in prime number finding (61.3% ahead), physics (45.8% ahead), and data encryption (38.4% ahead). The smallest margin is in single-thread performance at 11.2%.

The use-case split is therefore straightforward. The Ultra X9 378H is the choice for general-purpose, multi-threaded, single-threaded, encryption, compression, and floating-point workloads. The Core 7 253PE is the choice only for integer math. The database also shows the Ultra X9 378H sits at the 89th percentile of all CPUs, while the Core 7 253PE sits at the 87th percentile, confirming that the mobile part occupies a slightly higher overall performance tier.

Architecture Differences

The two processors come from different Intel families and target different market segments. The Core 7 253PE is a desktop part using the Bartlett Lake architecture, built on Intel's 10 nm process, and fits the Intel Socket 1700. The Core Ultra X9 378H is a mobile part using the Panther Lake architecture (specifically Panther Lake-H), built on Intel's 3 nm process, and fits the Intel BGA 2540 socket. The process node difference is substantial: 10 nm versus 3 nm, which partly explains the Ultra X9 378H's superior efficiency and performance per watt.

Core and thread counts differ significantly. The Core 7 253PE has 10 cores and 20 threads, using simultaneous multithreading. The Core Ultra X9 378H has 16 cores but only 16 threads, meaning it does not use SMT. Despite fewer threads, the Ultra X9 378H still achieves higher multi-core scores, indicating its 16 physical cores deliver more aggregate throughput than the 20 threads of the Core 7 253PE. The base and boost clocks also differ: the Core 7 253PE runs at 2.50 GHz base and 5.50 GHz boost, while the Ultra X9 378H runs at 2.00 GHz base and 5.00 GHz boost. The desktop part has higher clocks, yet still loses in most tests.

Cache hierarchies are notably different. The Core 7 253PE has 80 KB of L1 per core, 2 MB of L2 per core, and 33 MB of shared L3. The Ultra X9 378H has 192 KB of L1 per core, 2.5 MB of L2 per core, and only 18 MB of shared L3. The larger per-core L1 and L2 on the Ultra X9 378H likely contribute to its higher single-thread scores, despite the smaller shared L3 pool.

Memory support diverges completely. The Core 7 253PE supports DDR4 and DDR5 in a dual-channel configuration with a memory bandwidth of 89.6 GB/s, and it supports ECC memory. The Ultra X9 378H supports only LPDDR5X, also dual-channel, with a much higher memory bandwidth of 153.6 GB/s, and no ECC support. The higher bandwidth on the mobile part is a clear advantage for memory-intensive workloads. PCIe connectivity also differs: the Core 7 253PE provides Gen 5 with 16 CPU lanes, while the Ultra X9 378H provides Gen 5 with only 4 CPU lanes. Integrated graphics differ too: the Core 7 253PE uses UHD Graphics 730, while the Ultra X9 378H uses Arc B390. The desktop part has a 65 W TDP, while the mobile part has a 25 W TDP, a significant power envelope difference.

Head-to-Head Benchmarks

Starting with Cinebench, the Ultra X9 378H wins every test by a nearly uniform margin. In Cinebench R15 multi-core, it scores 3281 against 2507, a 23.6% difference. In R15 single-core, it scores 462 against 354, a 23.4% difference. The pattern repeats in R20: multi-core 13672 versus 10449 (23.6% ahead), single-core 1929 versus 1475 (23.5% ahead). R23 shows the same consistency: multi-core 32553 versus 24880 (23.6% ahead), single-core 4595 versus 3512 (23.6% ahead). The near-identical deltas across all Cinebench versions indicate a stable performance gap that is independent of the workload scaling.

In PassMark, the margins vary more widely. Data compression shows the Ultra X9 378H at 386591 versus 339133, a 12.3% lead. Data encryption shows a much larger gap: 29840 versus 18385, or 38.4%. Extended instructions follow with 31315 versus 21806, a 30.4% difference. Prime number finding is the largest single gap: 357 versus 138, a 61.3% margin. Floating-point math shows the Ultra X9 378H at 114500 versus 80870, a 29.4% lead. Multithreaded performance shows 38298 versus 29271, a 23.6% margin. Physics shows 3404 versus 1845, a 45.8% gap. Random string sorting shows 44648 versus 32777, a 26.6% lead.

The only reverse result is PassMark integer math, where the Core 7 253PE scores 114158 versus 92603, a 23.3% advantage for the desktop part. This is the sole test where the Core 7 253PE's higher clock speed and desktop-oriented design translate into a win. Single-thread performance, however, still favors the Ultra X9 378H: 4453 versus 3955, an 11.2% lead. The same score appears twice in the database under slightly different test names (passmark_single_thread and passmark_singlethread), both confirming the same result.

The Verdict

The recorded data points to a clear overall winner: the Intel Core Ultra X9 378H. It wins 16 out of 17 comparisons, holds a higher average benchmark score (47468 versus 40557), and ranks at the 89th percentile versus the 87th percentile of the Core 7 253PE. Its nearest rivals in the database include the AMD Ryzen 9 PRO 5945 (0.1% ahead), the Intel Core i7-13700KF (0.3% behind), and the Intel Core Ultra 7 265T (0.5% ahead), placing it in the upper tier of mobile processors. The Core 7 253PE, by contrast, sits within 0.3% of the Intel Core 5 223PE and the AMD Ryzen 9 7940H, showing it is a mid-tier desktop part.

For users selecting between these two, the decision hinges on workload and platform. The Ultra X9 378H is the superior choice for nearly all measured tasks, including rendering, physics simulation, encryption, compression, and single-threaded applications. Its 3 nm process and 153.6 GB/s memory bandwidth clearly contribute to these results. The Core 7 253PE is only preferable in integer math, where its 23.3% lead in PassMark integer math is the single decisive factor. It also offers ECC memory support, DDR4 compatibility, and 16 PCIe Gen 5 lanes, which are platform features the Ultra X9 378H lacks. The desktop part has a 65 W TDP versus 25 W, so it is not an efficiency choice, but its socket and memory flexibility may matter for specific workstation builds.

FAQ

Q: Which CPU has the higher average benchmark score?

A: The Intel Core Ultra X9 378H has an average benchmark score of 47468, while the Intel Core 7 253PE has 40557.

Q: Does the Intel Core 7 253PE win any benchmark?

A: Yes, it wins PassMark integer math with a score of 114158 against 92603, a 23.3% advantage over the Ultra X9 378H.

Q: What is the largest performance gap between the two?

A: The largest gap is in PassMark find prime numbers, where the Ultra X9 378H scores 357 versus 138, a 61.3% lead.

Q: How do the core and thread counts compare?

A: The Core 7 253PE has 10 cores and 20 threads, while the Ultra X9 378H has 16 cores and 16 threads.

Q: What memory types do they support?

A: The Core 7 253PE supports DDR4 and DDR5 with ECC, while the Ultra X9 378H supports only LPDDR5X without ECC.

Q: Which CPU has the higher boost clock?

A: The Core 7 253PE has a boost clock of 5.50 GHz, while the Ultra X9 378H has a boost clock of 5.00 GHz.