Intel Core Ultra 7 265 vs Intel Core Ultra 9 275HX Comparison

The Intel Core Ultra 9 275HX and Intel Core Ultra 7 265 are two faces of the same Arrow Lake architecture: one a mobile flagship soldered into BGA 2114, the other a desktop Socket 1851 part. The database records 17 head-to-head benchmarks, and the Core Ultra 9 275HX wins 14 of them, including every single PassMark test. The Core Ultra 7 265 strikes back hard in the newer Cinebench single-core runs, where it posts some of the largest margins on the page. Both sit in the same neighborhood overall: the 275HX averages 67469 against 64640 for the 265, placing them in the 94th and 93rd percentiles of all recorded CPUs respectively.

Head-to-Head Benchmarks

The Core Ultra 9 275HX owns sustained multi-threaded throughput. In Cinebench R15 multi-core it scores 5619.5 against 4255, a 32.1 percent lead. The margin explodes in Cinebench R20, where the 275HX posts 19899 multi-core and 2809 single-core versus 6268 and 884 for the 265, head-to-head advantages of 217.5 and 217.8 percent. Those are the two largest gaps in the entire dataset.

The PassMark suite repeats the pattern with smaller but consistent gaps. The 275HX leads in data compression (608381 versus 522983, 16.3 percent), data encryption (47112 versus 40456, 16.5 percent), extended instructions (47016 versus 41478, 13.4 percent), integer math (155218 versus 134773, 15.2 percent), floating point math (191186 versus 172776, 10.7 percent), prime number search (448 versus 418, 7.2 percent), string sorting (74320 versus 63833, 16.4 percent), physics (3338 versus 2923, 14.2 percent), and the overall multithread score (55759 versus 49682, 12.2 percent). Even in single-thread PassMark the 275HX edges ahead, 4713 to 4689, a 0.5 percent margin that is effectively a tie.

The Core Ultra 7 265's three wins all come from the newer Cinebench releases. In Cinebench R23 single-core it scores 5960 against 2204, a 63 percent victory, and in Cinebench R23 multi-core it lands 42216 against 35589, 15.7 percent ahead. It also takes Cinebench R15 single-core 600 to 334, a 44.3 percent margin. Note the internal inconsistency in the recorded Cinebench data: the R23 single-core result of 5960 exceeds the same chip's R20 single-core score of 884 by nearly seven times, an unusually wide spread between revisions that suggests differing run conditions or configurations in the database. Treat the cross-family Cinebench comparisons with that caveat in mind, while the PassMark suite, where both chips were scored on a consistent battery, points clearly to the 275HX.

Context from the rivals list reinforces how close these two are overall. The 275HX's average of 67469 sits within one percent of the Intel Xeon w5-3525 (67673), AMD EPYC 4484PX (67822), AMD Ryzen Threadripper PRO 5955WX (67868), and Intel Xeon 6515P (67006). The 265's 64640 is similarly bracketed by the AMD EPYC 4464P (64823), Intel Core Ultra 7 265F (64438), AMD EPYC 7343 (64202), and AMD EPYC 9124 (65104).

Architecture Differences

Both chips belong to Core Ultra Series 2 and share the Arrow Lake architecture, built on TSMC's 3 nm process with an identical 17,800 million transistors and a 243 mm² die. The core difference is segmentation: the 275HX is the Arrow Lake-HX codename aimed at the mobile segment, while the 265 is Arrow Lake-S for the desktop.

Thread resources differ meaningfully. The 275HX carries 24 cores and 24 threads against 20 cores and 20 threads on the 265, and that four-core advantage drives its multi-core leads. Clocks also favor the 275HX: a 2.70 base and 5.40 boost versus 2.40 base and 5.30 boost. Cache is identical per core, 192 KB of L1 and 3 MB of L2, but the shared L3 pool is larger on the 275HX at 36 MB versus 30 MB.

Platform characteristics diverge. The 275HX is a BGA 2114 mobile package that cannot be swapped, while the 265 uses the socketed Intel Socket 1851. The 275HX has a 55 TDP rating versus 65 for the 265, an advantage in efficiency for the mobile part. The 275HX is also multiplier unlocked; the 265 is not. Integrated graphics differ in scale: Arc Xe-LPG with 64 EU on the 275HX versus the same Arc Xe-LPG architecture with 32 EU on the 265. Shared traits include DDR5 support, dual-channel memory with 102.4 GB/s of bandwidth, PCIe Gen 5 with 20 CPU lanes, no ECC memory, and active production status. The 265 launched on 2025-01-06, the 275HX on 2025-01-12, less than a week apart. The 265 carries a launch MSRP of $394; no launch MSRP is recorded for the 275HX.

FAQ

Q: Which CPU is faster overall in the recorded benchmarks?

A: The Core Ultra 9 275HX, with 14 wins out of 17 head-to-head tests and an average benchmark score of 67469 versus 64640, roughly a 4 percent aggregate edge.

Q: Does the Core Ultra 7 265 win anything?

A: Yes. It takes Cinebench R23 single-core (5960 versus 2204, a 63 percent margin), Cinebench R23 multi-core (42216 versus 35589, 15.7 percent), and Cinebench R15 single-core (600 versus 334).

Q: How do they compare in single-threaded performance?

A: It depends on the suite. PassMark single-thread is a dead heat, 4713 versus 4689 in favor of the 275HX. Cinebench R15, R20, and R23 single-core results conflict with each other in the database: R20 favors the 275HX by 217.8 percent while R15 and R23 favor the 265 by 44.3 and 63 percent, so no definitive single-core verdict emerges from the Cinebench data.

Q: Which chip has more cores and cache?

A: The 275HX has 24 cores and 24 threads with 36 MB of shared L3 cache; the 265 has 20 cores and 20 threads with 30 MB of shared L3. Per-core L1 (192 KB) and L2 (3 MB) are identical.

Q: Can either CPU be overclocked?

A: Only the Core Ultra 9 275HX, which has an unlocked multiplier. The Core Ultra 7 265 does not.

Q: Which is more efficient on paper?

A: The 275HX is rated at 55 TDP versus 65 for the 265, despite having four more cores and higher clocks, giving the mobile part the better rated efficiency.

Specification Differences

| Field | Core Ultra 9 275HX | Core Ultra 7 265 |

|---|---|---|

| Cores / Threads | 24 / 24 | 20 / 20 |

| Base Clock | 2.70 GHz | 2.40 GHz |

| Boost Clock | 5.40 GHz | 5.30 GHz |

| TDP | 55 | 65 |

| Socket | Intel BGA 2114 | Intel Socket 1851 |

| Codename | Arrow Lake-HX | Arrow Lake-S |

| L3 Cache (shared) | 36 MB | 30 MB |

| Integrated Graphics | Arc Xe-LPG 64EU | Arc Xe-LPG 32EU |

| Market Segment | Mobile | Desktop |

| Release Date | 2025-01-12 | 2025-01-06 |

| Multiplier Unlocked | Yes | No |

| Part Number | SRVFK | SRQCX |

| Launch MSRP | Not recorded | $394 |

Everything else matches: Arrow Lake architecture, TSMC 3 nm, 17,800 million transistors, 243 mm² die, DDR5 dual-channel at 102.4 GB/s, PCIe Gen 5 with 20 CPU lanes, no ECC, and Arc Xe-LPG integrated graphics.

The Verdict

The data favors the Core Ultra 9 275HX for anyone whose workload scales with threads. It wins every PassMark test, including a 12.2 percent multithread advantage, a 16.5 percent encryption lead, and a 32.1 percent Cinebench R15 multi-core lead, all while drawing a lower rated TDP. It also offers the larger iGPU, the bigger L3 pool, an unlocked multiplier, and sits in the 94th percentile of all CPUs in the database, one point above the 265.

The Core Ultra 7 265 is the pick where the Cinebench R23 results match your workload profile, since it wins both the R23 multi-core and single-core runs there by 15.7 and 63 percent. It is also the only one of the two that is socketed, sitting in Socket 1851, which matters for a traditional desktop build, and its launch MSRP of $394 is recorded, while the 275HX ships only as a soldered mobile BGA part. Buyers comparing these two directly should weigh the 275HX's broad benchmark dominance against the 265's R23 results and desktop platform flexibility.

Where Each One Wins

The Core Ultra 9 275HX wins for heavy parallel workloads: rendering in Cinebench R15 (32.1 percent ahead), physics simulation (3338 versus 2923), integer and floating point math (15.2 and 10.7 percent ahead), compression and encryption (16.3 and 16.5 percent ahead), string sorting (16.4 percent ahead), and general multithreaded throughput (55759 versus 49682). Its 24 threads and 36 MB of L3 make it the stronger recorded performer for code compilation-style integer work, media encoding, and sustained compute on the move.

The Core Ultra 7 265 wins where the recorded Cinebench R23 data matters most: 5960 single-core points, 63 percent ahead of the 275HX, plus a 42216 multi-core score that leads by 15.7 percent. Its PassMark single-thread score of 4689 is within 0.5 percent of the 275HX, so lightly threaded desktop responsiveness is effectively a wash there. For a socketed desktop build with a discrete GPU, where R23-class performance and a standard Socket 1851 upgrade path dominate the decision, the 265 holds its ground. For everything else in the database, the 275HX is the faster chip.