Intel Core 9 273PTE vs Intel Core Ultra 7 265KF Comparison

Head-to-Head Benchmarks

The benchmark data presents a decisive outcome: the Intel Core Ultra 7 265KF wins every single recorded head-to-head comparison, 17 wins to 0 for the Intel Core 9 273PTE. The magnitude of the victory varies widely across workloads, from a 30.3% edge in single-threaded tests to a 70.8% lead in prime number finding.

The Cinebench suite shows a remarkably consistent gap. In Cinebench R23 multicore, the Core Ultra 7 265KF scores 49,736 against 20,445 for the Core 9 273PTE, a 58.9% advantage. The single-core R23 result tells the same story: 7,021 versus 2,886, again 58.9% ahead. This consistency repeats across R15 and R20, with the delta holding at 58.9% or 59.0% in every Cinebench iteration. The pattern indicates the performance gap is structural rather than workload-specific.

PassMark results reveal where the differences are largest. Data encryption shows a 70.4% lead for the Core Ultra 7 265KF (48,198 versus 14,253). Extended instructions widen further to 70.7% (54,513 versus 15,952). The largest delta appears in find prime numbers, where the Core Ultra 7 265KF scores 486 against 142, a 70.8% advantage. Floating point math follows at 68.0% ahead (189,431 versus 60,673). Random string sorting shows a 63.7% gap (79,735 versus 28,973), while data compression sits at 61.2% (666,589 versus 258,704).

The narrowest margins appear in PassMark single-thread tests. The Core Ultra 7 265KF scores 4,928 versus 3,433, a 30.3% lead. Integer math shows a 42.5% gap (143,351 versus 82,411), and physics a 47.2% gap (3,633 versus 1,917). The multi-thread PassMark result lands at 58.9% (58,518 versus 24,054), matching the Cinebench multicore delta exactly.

Average benchmark scores reinforce the overall picture. The Core Ultra 7 265KF averages 71,910 across all recorded benchmarks, placing it in the 94th percentile of all CPUs. The Core 9 273PTE averages 31,143, sitting in the 82nd percentile. The nearest rivals for each processor confirm the gap: the Core Ultra 7 265KF competes with the AMD Ryzen 7 8840HX (0.2% behind) and Intel Xeon 6517P (0.6% ahead), while the Core 9 273PTE sits within 0.5% of the Intel Core i7-12700F, AMD Ryzen 9 8945HS, and Intel Core i7-13700TE.

Architecture Differences

The two processors come from fundamentally different designs. The Core 9 273PTE uses the Bartlett Lake codename with a 10 nm process node fabricated by Intel. The Core Ultra 7 265KF uses the Arrow Lake-S codename with a 3 nm process node fabricated by TSMC. The manufacturing difference alone explains a substantial portion of the efficiency and performance gap.

Core counts differ sharply. The Core 9 273PTE provides 12 cores with 24 threads, relying on Hyper-Threading to double thread count. The Core Ultra 7 265KF provides 20 cores with 20 threads, meaning each core carries a single thread. Despite having 4 fewer threads, the Core Ultra 7 265KF delivers 58.9% higher multicore scores in Cinebench R23, indicating the individual cores are significantly stronger.

Cache hierarchies differ in total capacity and allocation. The Core 9 273PTE has 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3. The Core Ultra 7 265KF has 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3. The Core Ultra 7 265KF uses larger per-core caches, while the Core 9 273PTE has more total L3. The 3 nm process allows the Core Ultra 7 265KF to pack 17,800 million transistors into a 243 mm² die; the Core 9 273PTE does not have transistor or die size data recorded.

Memory support diverges as well. The Core 9 273PTE supports both DDR4 and DDR5 memory, while the Core Ultra 7 265KF supports DDR5 only. Both run dual-channel memory buses. The Core Ultra 7 265KF records 102.4 GB/s of memory bandwidth versus 89.6 GB/s for the Core 9 273PTE. ECC memory is supported on the Core 9 273PTE but not on the Core Ultra 7 265KF.

The Core 9 273PTE includes integrated graphics with UHD Graphics 730. The Core Ultra 7 265KF has no integrated graphics, indicated as N/A. PCIe connectivity also differs: the Core 9 273PTE provides Gen 5 with 16 CPU lanes, while the Core Ultra 7 265KF provides Gen 5 with 20 CPU lanes.

Where Each One Wins

The Core 9 273PTE does not win any recorded benchmark. Every head-to-head comparison in the database favors the Core Ultra 7 265KF. However, the Core 9 273PTE retains specific platform advantages that matter for certain deployments.

ECC memory support is exclusive to the Core 9 273PTE. Systems requiring error-correcting memory for data integrity cannot use the Core Ultra 7 265KF, which lacks ECC support entirely. This positions the Core 9 273PTE for reliability-focused desktop builds where memory errors are unacceptable.

Memory flexibility favors the Core 9 273PTE. Support for DDR4 and DDR5 means existing DDR4 modules can be reused, avoiding a forced platform migration. The Core Ultra 7 265KF requires DDR5, committing builders to newer memory technology. The dual-channel bus width is identical, but the bandwidth ceiling differs: 102.4 GB/s for the Core Ultra 7 265KF versus 89.6 GB/s for the Core 9 273PTE.

Integrated graphics give the Core 9 273PTE a practical edge for systems without a discrete GPU. The UHD Graphics 730 provides display output capability, while the Core Ultra 7 265KF requires a separate graphics card for any video output. This is a hard requirement, not a performance consideration.

The Core 9 273PTE also fits the Intel Socket 1700 platform, while the Core Ultra 7 265KF uses Intel Socket 1851. Socket compatibility determines motherboard selection, and the two are not interchangeable. The Core 9 273PTE ships with a locked multiplier, while the Core Ultra 7 265KF has an unlocked multiplier for overclocking.

Specification Differences

The two processors differ across nearly every physical and electrical specification. Core count: 12 versus 20. Thread count: 24 versus 20. Base clock: 1.40 GHz versus 3.90 GHz. Boost clock: 5.50 GHz for both. TDP: 45 W versus 125 W. Socket: Intel Socket 1700 versus Intel Socket 1851. Process node: 10 nm versus 3 nm. Foundry: Intel versus TSMC.

Cache configurations differ in both per-core and shared allocations. L1 per core: 80 KB versus 192 KB. L2 per core: 2 MB versus 3 MB. L3 shared: 36 MB versus 30 MB. The Core 9 273PTE has 6 MB more L3 overall, but the Core Ultra 7 265KF has more than double the L1 per core.

Memory specifications: the Core 9 273PTE supports DDR4 and DDR5, while the Core Ultra 7 265KF supports DDR5 only. Memory bandwidth: 89.6 GB/s versus 102.4 GB/s. ECC: supported versus not supported. PCIe: Gen 5 with 16 lanes versus Gen 5 with 20 lanes. Integrated graphics: UHD Graphics 730 versus N/A.

Release dates place the Core 9 273PTE significantly later in the market. The Core 9 273PTE released on March 8, 2026, while the Core Ultra 7 265KF released on October 23, 2024. Both processors remain in active production. The Core 9 273PTE has a launch MSRP of $549; the Core Ultra 7 265KF has a launch MSRP of $379.

The Core 9 273PTE lists a part number of SA4QJ, and the Core Ultra 7 265KF lists SRQCU. The Core Ultra 7 265KF belongs to the Core Ultra Series 2 and uses the Arrow Lake architecture, while the Core 9 273PTE lists no series and no architecture beyond the Bartlett Lake codename.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra 7 265KF has 20 cores, while the Intel Core 9 273PTE has 12 cores. The Core Ultra 7 265KF also has fewer threads (20 versus 24) because it does not use simultaneous multithreading.

Q: How much faster is the Core Ultra 7 265KF in Cinebench R23 multicore?

A: The Core Ultra 7 265KF scores 49,736 in Cinebench R23 multicore versus 20,445 for the Core 9 273PTE. The delta is 58.9% in favor of the Core Ultra 7 265KF.

Q: Does the Core 9 273PTE support ECC memory?

A: Yes, the Core 9 273PTE supports ECC memory. The Core Ultra 7 265KF does not support ECC memory.

Q: What process nodes do the two processors use?

A: The Core 9 273PTE uses a 10 nm process node fabricated by Intel. The Core Ultra 7 265KF uses a 3 nm process node fabricated by TSMC.

Q: Which processor has integrated graphics?

A: The Core 9 273PTE includes UHD Graphics 730. The Core Ultra 7 265KF has no integrated graphics, listed as N/A.

Q: What are the boost clocks of each processor?

A: Both processors have a boost clock of 5.50 GHz. The base clocks differ: 1.40 GHz for the Core 9 273PTE and 3.90 GHz for the Core Ultra 7 265KF.

The Verdict

The benchmark data is unambiguous: the Intel Core Ultra 7 265KF outperforms the Intel Core 9 273PTE in every recorded workload. The 30.3% to 70.8% margins across all tests, the 94th versus 82nd percentile standing, and the 71,910 versus 31,143 average benchmark score all point in the same direction. The Core Ultra 7 265KF delivers more than double the average performance while carrying a lower launch MSRP of $379 versus $549.

The Core 9 273PTE serves a narrower purpose. Its ECC memory support, DDR4 compatibility, integrated graphics, and 45 W TDP make it suitable for specific desktop configurations where those features are mandatory. The Intel Socket 1700 platform and locked multiplier further define its role as a functional, low-power option rather than a performance leader.

The Core Ultra 7 265KF is the correct choice for users who prioritize raw performance, single-thread speed, and multithreaded throughput. Its 20 cores, 3 nm process, 102.4 GB/s memory bandwidth, and unlocked multiplier provide the strongest recorded results in this comparison. The absence of integrated graphics and ECC support narrows its applicability, but for pure compute performance, the data favors it overwhelmingly. Users requiring ECC memory or an integrated GPU must select the Core 9 273PTE, accepting its substantial performance deficit.