Intel Core 9 273PE vs Intel Core Ultra 9 275HX Comparison

Where Each One Wins

The recorded benchmark data splits these two processors into clearly different roles. The Intel Core 9 273PE wins only two of the seventeen head-to-head comparisons, but both victories are in single-core Cinebench tests. The first is Cinebench R15 single-core with a score of 445 against 334 for the Core Ultra 9 275HX, a 33.2% advantage. The second is Cinebench R23 single-core, where the 273PE posts 4417 versus 2204, a massive 100.4% lead. These results indicate the desktop part has a substantial per-thread performance advantage in older Cinebench workloads.

The Intel Core Ultra 9 275HX dominates the remaining fifteen comparisons. Its wins span every other category in the head-to-head set. In multi-core rendering, the 275HX leads Cinebench R15 by 43.9% (5619.5 versus 3153), Cinebench R20 by 34% (19899 versus 13140), and Cinebench R23 by 12.1% (35589 versus 31288). The mobile chip also wins every PassMark workload listed, including data compression (608381 versus 405885, a 33.3% lead), data encryption (47112 versus 22719, a 51.8% lead), extended instructions (47016 versus 24630, a 47.6% lead), and prime number finding (448 versus 203, a 54.7% lead). Floating-point math shows a 43.6% advantage for the 275HX, integer math shows a 10.2% advantage, and multithreaded PassMark shows a 34% advantage.

The use-case split is straightforward from the data. The Core 9 273PE is the choice for workloads that depend on single-threaded Cinebench performance, particularly the R23 variant where it doubles the rival's score. The Core Ultra 9 275HX is the choice for everything else in the measured set, including rendering, encryption, compression, and general math throughput. The overall average benchmark scores confirm this: the 275HX averages 67469 across the database, while the 273PE averages 49845. The 275HX also sits at the 94th percentile of all CPUs, while the 273PE sits at the 90th percentile.

Architecture Differences

The two processors come from different Intel families with different design goals. The Core 9 273PE uses the Bartlett Lake codename and is built on a 10 nm process at Intel's foundry. It is a desktop part on Intel Socket 1700 with 12 cores and 24 threads. The Core Ultra 9 275HX uses the Arrow Lake-HX codename, belongs to the Core Ultra Series 2, and is built on a 3 nm process at TSMC. It is a mobile part on Intel BGA 2114 with 24 cores and 24 threads. The 275HX has no hyperthreading, which explains why its thread count equals its core count. The 273PE has twice as many threads as cores.

Cache structures differ as well. The 273PE has 80 KB of L1 per core and 2 MB of L2 per core. The 275HX has 192 KB of L1 per core and 3 MB of L2 per core. Both share 36 MB of L3. The transistor counts are not listed for the 273PE, but the 275HX contains 17,800 million transistors on a 243 mm² die. Clock speeds also differ: the 273PE runs at a 2.30 GHz base and 5.70 GHz boost, while the 275HX runs at a 2.70 GHz base and 5.40 GHz boost. The 273PE has the higher top clock, which aligns with its single-core Cinebench wins. The 275HX has the higher base clock.

Memory support diverges. The 273PE supports DDR4 and DDR5 in a dual-channel configuration with 89.6 GB/s bandwidth and ECC memory support. The 275HX supports only DDR5, also dual-channel, but with higher bandwidth at 102.4 GB/s and no ECC support. PCIe lanes differ: the 273PE provides Gen 5 with 16 lanes from the CPU, while the 275HX provides Gen 5 with 20 lanes. Integrated graphics also differ, with the 273PE using UHD Graphics 730 and the 275HX using Arc Xe-LPG Graphics 64EU.

The production status for both is Active. The 273PE launched on March 8, 2026, with a launch MSRP of $549 and a locked multiplier. The 275HX launched on January 12, 2025, with an unlocked multiplier and no listed launch MSRP. The 273PE has a TDP of 65 watts, while the 275HX has a TDP of 55 watts, despite the mobile chip having double the cores.

The Verdict

The benchmark data indicates that the Intel Core Ultra 9 275HX is the stronger processor for the vast majority of measured workloads. It wins fifteen of seventeen head-to-head tests, including every multi-core Cinebench test and every PassMark test in the set. Its average benchmark score of 67469 is 35.3% higher than the 273PE's 49845. Its 94th percentile ranking versus all CPUs also exceeds the 273PE's 90th percentile. For rendering, encryption, compression, and general math throughput, the 275HX is the clear choice from the recorded data.

The Intel Core 9 273PE has one specific strength: single-threaded Cinebench performance. Its R15 single-core score of 445 beats the 275HX by 33.2%, and its R23 single-core score of 4417 beats the 275HX by 100.4%. These are large margins. However, the 275HX wins the R20 single-core test with 2809 versus 1855, a 34% advantage. The single-core picture is inconsistent across Cinebench versions, with the 273PE winning two and the 275HX winning one. In PassMark single-thread tests, the 275HX leads with 4713 versus 3650, a 22.6% advantage.

The data supports a simple verdict. Users who prioritize multi-threaded throughput across a broad set of workloads should select the Core Ultra 9 275HX. Users who specifically need the highest possible Cinebench R23 single-core score should select the Core 9 273PE. The 275HX also offers more cores, a smaller process node, higher memory bandwidth, and an unlocked multiplier. The 273PE offers ECC memory support, DDR4 compatibility, a higher boost clock, and a desktop socket. The choice depends on whether the workload matches the 273PE's narrow single-core advantage or the 275HX's broad multi-core dominance.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra 9 275HX has 24 cores and 24 threads. The Intel Core 9 273PE has 12 cores and 24 threads.

Q: Which processor wins in multi-core Cinebench R23?

A: The Intel Core Ultra 9 275HX scores 35589 in Cinebench R23 multi-core, while the Intel Core 9 273PE scores 31288. The 275HX leads by 12.1%.

Q: Which processor wins in single-core Cinebench R23?

A: The Intel Core 9 273PE scores 4417, while the Intel Core Ultra 9 275HX scores 2204. The 273PE leads by 100.4%.

Q: What is the average benchmark score for each processor?

A: The Intel Core Ultra 9 275HX has an average benchmark score of 67469. The Intel Core 9 273PE has an average benchmark score of 49845.

Q: Which processor supports ECC memory?

A: The Intel Core 9 273PE supports ECC memory. The Intel Core Ultra 9 275HX does not.

Q: Which processor has a higher boost clock?

A: The Intel Core 9 273PE has a boost clock of 5.70 GHz. The Intel Core Ultra 9 275HX has a boost clock of 5.40 GHz.

Head-to-Head Benchmarks

The largest victory in the recorded set belongs to the Core 9 273PE in Cinebench R23 single-core. Its score of 4417 is more than double the 275HX's 2204, a 100.4% advantage. This is the only test where the delta exceeds 100%. The next largest win for the 273PE is Cinebench R15 single-core, where 445 beats 334 by 33.2%. These two wins demonstrate that the desktop chip's per-thread performance in these specific tests is exceptional.

The Core Ultra 9 275HX counters with several large wins of its own. The biggest is data encryption, where 47112 beats 22719 by 51.8%. Prime number finding follows with a 54.7% lead (448 versus 203). Extended instructions show a 47.6% advantage (47016 versus 24630). Data compression shows a 33.3% lead (608381 versus 405885). Floating-point math shows a 43.6% lead (191186 versus 107884). Random string sorting shows a 39.3% lead (74320 versus 45098). The 275HX also wins both single-thread PassMark tests with 4713 versus 3650, a 22.6% margin.

Multi-core Cinebench results favor the 275HX consistently. R15 shows 5619.5 versus 3153, a 43.9% lead. R20 shows 19899 versus 13140, a 34% lead. R23 shows 35589 versus 31288, a 12.1% lead. The R23 margin is the smallest of the three, indicating the 273PE closes the gap as the workload scales. PassMark multithread follows the same trend with 55759 versus 36810, a 34% lead. PassMark physics shows a narrow 6.5% lead for the 275HX (3338 versus 3120). Integer math shows a 10.2% lead (155218 versus 139410).

The single-core Cinebench results are contradictory across versions. R15 and R23 favor the 273PE, while R20 favors the 275HX by 34% (2809 versus 1855). This inconsistency suggests the two architectures respond differently to the specific Cinebench versions. The 275HX wins the newer PassMark single-thread tests, which may reflect its higher base clock and different cache layout. The 273PE's wins in R15 and R23 single-core align with its 5.70 GHz boost clock, the highest in the comparison.

The overall win count is 15 for the 275HX and 2 for the 273PE. The average benchmark scores reinforce this: 67469 versus 49845. The 275HX also ranks higher at the 94th percentile of all CPUs, versus the 90th percentile for the 273PE. The 275HX's nearest rivals in the database include the Intel Xeon w5-3525 with a 0.3% higher average score, the AMD EPYC 4484PX with a 0.5% higher average, and the AMD Ryzen Threadripper PRO 5955WX with a 0.6% higher average. The 273PE's nearest rivals include the AMD Ryzen AI Max+ 388 with a 0.1% higher average and the Intel Core i5-14600KF with a 0.9% higher average, while the Intel Core i9-13980HX and AMD Ryzen AI 9 HX PRO 370 sit 1.1% and 1.2% higher, respectively. These comparisons place both processors in competitive positions within their respective performance tiers.