Intel Core 7 253PE vs Intel Core Ultra 7 255HX Comparison

Head-to-Head Benchmarks

The benchmark data reveals a clear split between these two processors. The Intel Core Ultra 7 255HX wins 15 of the 17 recorded comparisons, while the Intel Core 7 253PE takes only 2. The most dramatic difference appears in Cinebench R15 multi-core, where the Ultra 7 255HX scores 4916 against 2507 for the Core 7 253PE, a 49% advantage. The gap narrows in Cinebench R23 multi-core, but the Ultra 7 255HX still leads by 23.7% with 32612 points versus 24880.

The single-core results tell a different story. In Cinebench R15 single-core, the Core 7 253PE wins by 8.3% (354 versus 327). The largest single-core margin in either direction is Cinebench R23 single-core, where the Core 7 253PE delivers 3512 points against 2163, a lead of 62.4%. The PassMark single-thread test, however, favors the Ultra 7 255HX at 4562 versus 3955, a 13.3% advantage. This inconsistency suggests that the two chips respond differently to specific workload characteristics, with the Core 7 253PE showing strength in some lightly threaded Cinebench runs while the Ultra 7 255HX dominates the PassMark single-thread metric.

Multi-threaded workloads consistently favor the Ultra 7 255HX. PassMark multi-thread shows 48234 versus 29271, a 39.3% lead. The data encryption test shows the largest multi-threaded gap: 39499 versus 18385, a 53.5% advantage for the Ultra 7 255HX. Prime number finding shows a 65.5% difference (400 versus 138), the largest relative margin in the entire comparison. Floating point math follows at 49.7% (160624 versus 80870), and random string sorting at 47.6% (62591 versus 32777). Extended instructions show a 47.1% gap (41247 versus 21806), while data compression is 34.2% ahead (515143 versus 339133). Integer math is the closest multi-threaded result, with the Ultra 7 255HX ahead by only 10.2% (127126 versus 114158). Physics simulation shows a 36.9% difference (2926 versus 1845).

Cinebench R20 results favor the Ultra 7 255HX in both multi-core and single-core. Multi-core shows 17187 versus 10449, a 39.2% gap, and single-core shows 2426 versus 1475, also 39.2%. The average benchmark score for the Ultra 7 255HX is 62738, placing it in the 93rd percentile of all CPUs, while the Core 7 253PE averages 40557 and sits in the 87th percentile.

FAQ

Q: Which processor wins more benchmark comparisons?

A: The Intel Core Ultra 7 255HX wins 15 of 17 head-to-head tests. The Intel Core 7 253PE wins 2, both in Cinebench single-core tests (R15 and R23).

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

A: The PassMark find prime numbers test shows the largest relative difference, with the Ultra 7 255HX scoring 400 versus 138 for the Core 7 253PE, a 65.5% advantage.

Q: How do the average benchmark scores compare?

A: The Ultra 7 255HX has an average benchmark score of 62738, while the Core 7 253PE averages 40557. This places the Ultra 7 255HX in the 93rd percentile and the Core 7 253PE in the 87th percentile of all CPUs.

Q: In which tests does the Core 7 253PE outperform the Ultra 7 255HX?

A: The Core 7 253PE wins Cinebench R15 single-core by 8.3% (354 versus 327) and Cinebench R23 single-core by 62.4% (3512 versus 2163).

Q: How close are the nearest rivals for each processor?

A: The Core 7 253PE's nearest rival is the Intel Core 5 223PE with an average score of 40585, a 0.1% difference. The Ultra 7 255HX's nearest rival is the AMD Ryzen AI Embedded P185 at 62839, a 0.2% difference.

Q: Does the Ultra 7 255HX lead in every PassMark test?

A: Yes. The Ultra 7 255HX wins all eight PassMark tests recorded, with margins ranging from 10.2% in integer math to 65.5% in prime number finding.

Architecture Differences

The two processors use fundamentally different designs. The Intel Core 7 253PE is built on Bartlett Lake architecture using a 10 nm process at Intel's foundry. It has 10 cores and 20 threads. The Intel Core Ultra 7 255HX uses Arrow Lake architecture (codename Arrow Lake-HX) on a 3 nm process manufactured by TSMC. It has 20 cores and 20 threads, meaning it doubles the core count while maintaining the same thread count. The Ultra 7 255HX contains 17,800 million transistors on a 243 mm² die, while the Core 7 253PE has no recorded transistor or die size data.

Cache configurations differ substantially. The Core 7 253PE has 80 KB of L1 cache per core, 2 MB of L2 per core, and 33 MB of shared L3. The Ultra 7 255HX has 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3. The per-core cache is larger on the Ultra 7 255HX, but the total L3 pool is 3 MB smaller. The Core 7 253PE supports both DDR4 and DDR5 memory, while the Ultra 7 255HX supports DDR5 only. Both use dual-channel memory buses. The measured memory bandwidth is 89.6 GB/s for the Core 7 253PE and 102.4 GB/s for the Ultra 7 255HX.

ECC memory support is present on the Core 7 253PE but absent on the Ultra 7 255HX. PCIe lane counts also differ: the Core 7 253PE provides 16 Gen 5 lanes from the CPU, while the Ultra 7 255HX provides 20 Gen 5 lanes. Integrated graphics differ as well, with the Core 7 253PE using UHD Graphics 730 and the Ultra 7 255HX using Arc Xe-LPG Graphics 64EU.

The Core 7 253PE is a desktop processor on Intel Socket 1700 with a locked multiplier. The Ultra 7 255HX is a mobile processor on Intel BGA 2114 with an unlocked multiplier. The production status for both is Active. The Core 7 253PE has a release date in March 2026, while the Ultra 7 255HX was released in January 2025.

Specification Differences

The core count difference is the most notable: 10 cores for the Core 7 253PE versus 20 cores for the Ultra 7 255HX, both with 20 threads. Base clocks are close, 2.50 GHz versus 2.40 GHz, but boost clocks favor the Core 7 253PE at 5.50 GHz versus 5.20 GHz. Thermal design power differs by 10 watts, with the Core 7 253PE rated at 65 W and the Ultra 7 255HX at 55 W.

The process node is a major differentiator: 10 nm for the Core 7 253PE versus 3 nm for the Ultra 7 255HX. The foundry also differs, with Intel producing the Core 7 253PE and TSMC producing the Ultra 7 255HX. Sockets are incompatible, Intel Socket 1700 versus Intel BGA 2114. The market segment differs, Desktop versus Mobile.

Cache specifications differ in L1, L2, and L3 as described above. Memory support differs in that the Core 7 253PE accepts DDR4 and DDR5 while the Ultra 7 255HX accepts DDR5 only. Memory bandwidth is higher on the Ultra 7 255HX at 102.4 GB/s versus 89.6 GB/s. ECC memory is supported only on the Core 7 253PE. PCIe lanes differ at 16 versus 20, both Gen 5. Integrated graphics differ in model and execution units. The Core 7 253PE has a locked multiplier; the Ultra 7 255HX is unlocked. The Core 7 253PE has a launch MSRP of $384; no launch MSRP is recorded for the Ultra 7 255HX.

The Verdict

The recorded data indicates that the Intel Core Ultra 7 255HX is the stronger processor in the majority of workloads. Its 93rd percentile ranking, average benchmark score of 62738, and 15 of 17 benchmark wins make it the clear choice for multi-threaded and mixed workloads. The 20-core count, higher memory bandwidth, and larger per-core caches support this dominance. It is also the newer design on a smaller process node, though it was released earlier in calendar time.

The Intel Core 7 253PE is not without merit. Its win in Cinebench R23 single-core by 62.4% is substantial, and its R15 single-core lead of 8.3% shows that in specific single-threaded Cinebench scenarios it can outperform the Ultra 7 255HX. Its 5.50 GHz boost clock and 33 MB of L3 cache may contribute to these results. The desktop socket, ECC memory support, and DDR4 compatibility make it suitable for systems requiring those features. Its 87th percentile ranking remains respectable, and its nearest rivals are within 0.3% of its average score, indicating tight competition at that performance tier.

The Ultra 7 255HX sits among rivals within 0.7% of its average score, including the Intel Core Ultra 7 265HX and the AMD Ryzen AI 9 PRO 465. The Core 7 253PE faces similar density at its level, with the Intel Core 5 223PE and AMD Ryzen 9 7940H within 0.3%. Neither processor dominates its immediate competitive tier by a wide margin, but the gap between the two processors themselves is large, roughly 54.7% in average benchmark score.

Where Each One Wins

The Intel Core Ultra 7 255HX is the pick for data-heavy workloads. It leads in data compression by 34.2%, data encryption by 53.5%, and random string sorting by 47.6%. Extended instruction workloads favor it by 47.1%, and floating point math by 49.7%. Prime number finding shows a 65.5% advantage. Physics simulation is 36.9% ahead. Integer math is closer at 10.2% but still favors the Ultra 7 255HX. Cinebench multi-core results across R15, R20, and R23 all favor it, with margins from 23.7% to 49%. PassMark multi-thread shows a 39.3% lead. The single-thread PassMark result also favors it by 13.3%. Any workload that scales with cores, memory bandwidth, or parallel execution should favor the Ultra 7 255HX.

The Intel Core 7 253PE wins specifically in Cinebench R15 single-core and Cinebench R23 single-core. The R23 result is particularly strong, a 62.4% margin that is the second-largest relative difference in the entire comparison. These wins indicate that in certain lightly threaded Cinebench scenarios, the Core 7 253PE's higher boost clock and larger L3 cache can overcome the Ultra 7 255HX's architectural advantages. For workloads that resemble those specific tests, the Core 7 253PE holds an edge. Additionally, its ECC memory support, DDR4 compatibility, and desktop socket may make it preferable for systems that require those specific capabilities, even if raw benchmark scores favor the mobile chip.

The data does not support the Core 7 253PE for multi-threaded productivity, scientific computing, or encryption-heavy tasks. The Ultra 7 255HX leads in every category that involves sustained parallel computation. The single-core picture is mixed, with each processor winning different single-thread tests, but the PassMark single-thread result favors the Ultra 7 255HX. The overall pattern is consistent: the Ultra 7 255HX is the higher-performing processor across the vast majority of recorded benchmarks, while the Core 7 253PE shows specific, narrow strengths in certain Cinebench single-core runs.