Intel Core Ultra 7 265KF vs Intel Core Ultra 7 270HX Plus Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive performance advantage for the Intel Core Ultra 7 265KF across the vast majority of tested workloads. Of the 17 head-to-head benchmark comparisons, the 265KF wins 16, leaving the Intel Core Ultra 7 270HX Plus with a single victory. The margin of victory is not uniform, however, and the one loss reveals an interesting behavioral difference between the two processors.

Starting with the Cinebench suite, the 265KF establishes a clear lead in both multi-core and single-core rendering tests. In Cinebench R15 multi-core, the 265KF scores 5013 against 4224 for the 270HX Plus, a delta of 18.7%. The single-core R15 result follows the same pattern: 707 versus 596, an 18.6% advantage. This consistency carries through the newer Cinebench versions. In R20 multi-core, the 265KF posts 20889 versus 17603, again 18.7% ahead. The R20 single-core test shows 2948 versus 2485, an 18.6% gap. Cinebench R23 multi-core sees the 265KF at 49736 compared to 41913, with the same 18.7% delta, while the R23 single-core result is 7021 against 5917, also 18.7% ahead. The uniformity of these deltas across all six Cinebench tests indicates a consistent clock-for-clock or frequency-driven advantage rather than workload-specific scaling.

The Passmark suite reveals a wider spread of performance differences. The largest margin appears in Passmark extended instructions, where the 265KF scores 54513 versus 39283 for the 270HX Plus, a substantial 38.8% lead. Data compression shows the second-largest gap: 666589 versus 493179, a 35.2% difference. Random string sorting follows closely at 32.8% ahead, with scores of 79735 and 60020 respectively. Data encryption comes in at 27.5% ahead (48198 versus 37813). The multi-threaded Passmark test shows a 21.2% advantage for the 265KF, scoring 58518 against 48270. Integer math delivers a 17.1% lead (143351 versus 122449), and floating-point math shows a 15.8% edge (189431 versus 163567).

Single-threaded Passmark results are much closer. The 265KF scores 4928 against 4764 for the 270HX Plus, a modest 3.4% advantage. The find prime numbers test is nearly identical: 486 versus 482, a razor-thin 0.8% difference. These two results suggest that in purely scalar, low-complexity workloads, the two processors behave almost identically, with the 265KF holding only a marginal edge.

The single benchmark victory for the 270HX Plus comes in Passmark physics, where it scores 3843 against 3633 for the 265KF. This represents a 5.5% advantage for the mobile-oriented processor. This result stands out because physics simulations often respond to different scheduling or memory access patterns, and the 270HX Plus clearly has an architectural or firmware behavior that favors this specific workload.

Looking at the aggregate scores, the 265KF has an average benchmark score of 71910, while the 270HX Plus averages 61834. This places the 265KF at the 94th percentile of all CPUs in the database, with the 270HX Plus at the 93rd percentile. The nearest rival to the 265KF is the AMD Ryzen 7 8840HX, which averages 71797 and trails by just 0.2%, while the Intel Xeon Platinum 8270 is 0.8% behind at 71370. The 270HX Plus sits in a tighter cluster: the Intel Core i9-13900KF matches it exactly at 61841 (0% delta), the Core i9-13900K is 0.1% behind, and the Core i9-13900T is 0.2% behind.

The Verdict

The data clearly favors the Intel Core Ultra 7 265KF for any workload that benefits from higher sustained performance. Its 18.7% lead across all Cinebench versions indicates that rendering, video encoding, and other multi-threaded creative tasks will complete noticeably faster on the desktop part. The 38.8% advantage in extended instruction throughput and 35.2% lead in data compression further reinforce this for scientific computing, compression utilities, and encryption-heavy applications.

The 270HX Plus, however, is not without merit. Its 5.5% win in Passmark physics suggests that certain simulation or game physics workloads may run slightly better on the mobile processor. Additionally, its 55 W TDP against the 265KF's 125 W TDP means it delivers a substantial portion of the performance (roughly 80% of the average benchmark score) at less than half the power envelope. The 270HX Plus also includes integrated Arc Xe-LPG Graphics 64EU, whereas the 265KF has no integrated graphics at all, making the mobile part a more complete package for systems that do not use a discrete GPU.

The 265KF is the correct choice for desktop builders who want maximum compute throughput, particularly for rendering, data processing, and extended instruction workloads. The 270HX Plus suits mobile platforms where the power budget is constrained and integrated graphics are necessary, while still delivering 93rd percentile performance overall.

FAQ

Q: Which processor is faster in multi-core Cinebench tests?

A: The Intel Core Ultra 7 265KF wins all three multi-core Cinebench tests (R15, R20, R23) with a consistent 18.7% margin over the 270HX Plus.

Q: Does the 270HX Plus win any benchmarks?

A: Yes, the 270HX Plus wins Passmark physics with a score of 3843 versus 3633 for the 265KF, a 5.5% advantage.

Q: How close are the two processors in single-threaded performance?

A: The 265KF leads by 18.6% in Cinebench R15 single-core and 18.7% in R23 single-core, but the Passmark single-thread test shows only a 3.4% gap (4928 versus 4764).

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

A: The largest gap is in Passmark extended instructions, where the 265KF scores 54513 and the 270HX Plus scores 39283, a 38.8% difference.

Q: Do both processors have the same core and thread counts?

A: Yes, both have 20 cores and 20 threads.

Q: What is the average benchmark score difference?

A: The 265KF averages 71910 across all benchmarks, while the 270HX Plus averages 61834, a difference of roughly 16%.

Specification Differences

The two processors share several core specifications but differ in key operational parameters. Both have 20 cores and 20 threads, with identical cache configurations: 192 KB L1 per core, 3 MB L2 per core, and 30 MB shared L3. Both support DDR5 memory on a dual-channel bus with 102.4 GB/s bandwidth, and neither supports ECC memory. Both use PCIe Gen 5 with 20 CPU lanes, and both have unlocked multipliers.

The base clock differs substantially: the 265KF runs at 3.90 GHz, while the 270HX Plus runs at 2.40 GHz. Boost clocks are closer, with the 265KF at 5.50 GHz and the 270HX Plus at 5.30 GHz. The TDP is a major differentiator: the 265KF is rated at 125 W, while the 270HX Plus is rated at 55 W.

The socket and form factor separate them clearly. The 265KF uses Intel Socket 1851 and targets the desktop market, while the 270HX Plus uses Intel BGA 2114 and targets the mobile market. The 265KF has no integrated graphics, while the 270HX Plus includes Arc Xe-LPG Graphics 64EU.

Release timing also differs. The 265KF launched on 2024-10-23 with a launch MSRP of $379. The 270HX Plus has a later release date of 2026-03-16 and no launch MSRP recorded. The part numbers are SRQCU for the 265KF and SADST for the 270HX Plus.

Architecture Differences

Both processors are built on the same 3 nm process node at TSMC, with 17,800 million transistors on a 243 mm² die. They share the same L1, L2, and L3 cache structure, and both belong to the Core Ultra Series 2 family from Intel.

The architecture lineage differs in naming and target platform. The 265KF is based on Arrow Lake, specifically the Arrow Lake-S codename, and is listed under the Ultra 7 (Arrow Lake) generation. The 270HX Plus uses the Arrow Lake-HX Refresh codename and belongs to the Ultra 7 (Arrow Lake-HX) generation. This indicates the mobile part is a refresh variant of the same underlying silicon, adapted for lower power and mobile packaging.

The primary architectural consequence of this difference is the clock strategy. The 265KF's much higher base clock (3.90 GHz versus 2.40 GHz) and slightly higher boost clock (5.50 GHz versus 5.30 GHz) drive its substantial performance lead in most benchmarks. The 270HX Plus compensates with a much lower TDP, allowing it to fit into thermally constrained mobile chassis while still delivering competitive performance.

The integrated graphics difference is architectural as well: the 270HX Plus includes Arc Xe-LPG Graphics 64EU, while the 265KF has no integrated graphics unit. This means the desktop part requires a discrete GPU, whereas the mobile part can operate standalone.

Where Each One Wins

The Intel Core Ultra 7 265KF dominates in rendering and content creation workloads. Its 18.7% lead across all Cinebench versions makes it the stronger choice for 3D rendering, video encoding, and any task that leverages Cinebench-like multi-threaded scaling. The 38.8% advantage in extended instructions points to superiority in scientific computing, cryptography, and vectorized math-heavy applications. Data compression at 35.2% ahead and random string sorting at 32.8% ahead indicate better performance in database operations, file archiving, and data processing pipelines. The 21.2% lead in Passmark multithread solidifies its position for heavily parallel workloads.

The Intel Core Ultra 7 270HX Plus wins in Passmark physics with a 5.5% margin, suggesting it has an edge in physics simulation workloads that may appear in certain game engines or engineering simulation tools. Its 55 W TDP makes it the practical choice for laptops and compact mobile workstations where power consumption and heat dissipation are limiting factors. The integrated Arc Xe-LPG graphics also makes it a more self-contained solution for systems without discrete GPUs, though the benchmark data does not include graphics performance comparisons.

For single-threaded tasks, the 265KF leads, but the margin is small. The Cinebench single-core tests show an 18.7% gap, while Passmark single-thread shows only 3.4%. The find prime numbers test shows a negligible 0.8% difference, meaning the two processors are virtually indistinguishable in that specific workload. The 265KF is the better choice for users who prioritize raw compute throughput, while the 270HX Plus serves those who need 93rd percentile performance within a mobile power envelope.