Intel Core Ultra 7 265H vs Intel Core Ultra 7 356H Comparison

The Intel Core Ultra 7 265H and Intel Core Ultra 7 356H are both 16-core mobile processors from Intel, but they represent distinct architectural generations. The 265H is built on Arrow Lake-H, while the 356H uses the newer Panther Lake design. Benchmark data shows a near-even split, with the 265H winning 9 of 17 head-to-head tests and the 356H taking 8, making the choice heavily dependent on workload priorities rather than a clear overall victor.

FAQ

Q: Which processor has the higher boost clock speed?

A: The Intel Core Ultra 7 265H has a boost clock of 5.30 GHz, while the Intel Core Ultra 7 356H tops out at 4.70 GHz. This 0.60 GHz advantage contributes to the 265H’s wins in single-threaded tests.

Q: How do the two chips compare in Cinebench R23 multi-core performance?

A: The 265H scores 19,940 points in Cinebench R23 multi-core, which is 8.4% ahead of the 356H’s 18,395 points. This is the largest margin of victory for the 265H in any benchmark.

Q: Which processor offers better physics simulation performance?

A: The 356H wins the PassMark physics test decisively, scoring 2,895 against the 265H’s 2,497. That represents a 13.7% advantage for the 356H, its biggest win in the entire benchmark suite.

Q: Do both processors support the same memory types?

A: Yes, both support DDR5 and LPDDR5X memory with dual-channel buses. However, the 356H has a higher memory bandwidth of 115.2 GB/s compared to the 265H’s 102.4 GB/s.

Q: What is the difference in L3 cache capacity?

A: The 265H has 24 MB of shared L3 cache, while the 356H has 18 MB. The 265H also has a larger L2 cache at 3 MB per core versus 2.5 MB per core on the 356H.

Q: Which processor has a higher overall benchmark percentile ranking?

A: The 265H ranks in the 88th percentile against all CPUs, while the 356H sits in the 87th percentile. Their average benchmark scores are 41,621 for the 265H and 41,215 for the 356H, a difference of less than 1%.

Where Each One Wins

The Intel Core Ultra 7 265H is the stronger choice for compute-heavy, integer-focused workloads. Its wins in PassMark integer math (85,479 vs 83,111, a 2.8% lead) and floating-point math (109,123 vs 103,128, a 5.8% lead) indicate superior raw arithmetic throughput. The 265H also dominates in Cinebench R23 multi-core with an 8.4% edge, making it the better pick for long-running rendering tasks. Single-thread performance is another clear strength: the 265H leads PassMark single-thread by 6.4% (4,334 vs 4,072) and Cinebench R23 single-core by 2% (2,080 vs 2,040). For users running prime number calculations, the 265H’s 2.4% advantage in PassMark find prime numbers (335 vs 327) reinforces its suitability for scientific and mathematical workloads.

The Intel Core Ultra 7 356H, by contrast, excels in specific simulation and data-processing scenarios. Its standout result is PassMark physics, where it beats the 265H by 13.7% (2,895 vs 2,497), suggesting better performance in physics-based simulations or gaming physics. The 356H also wins PassMark extended instructions by 3.9% (27,898 vs 26,805), indicating better optimization for newer instruction sets. In data encryption, the 356H leads by 1.3% (26,345 vs 26,005), and in data compression it edges ahead by 0.4% (336,177 vs 334,711). The 356H also takes Cinebench R20 multi-core by a narrow 0.2% margin (12,153 vs 12,131) and Cinebench R20 single-core by the same 0.2% (1,715 vs 1,712), showing near-parity in those specific tests.

Architecture Differences

The two processors come from different architectural lineages. The 265H uses the Arrow Lake architecture, specifically the Arrow Lake-H codename, and belongs to Intel’s Core Ultra Series 2. The 356H is built on Panther Lake, codenamed Panther Lake, and is part of the Core Ultra Series 3. Both are manufactured on a 3 nm process node, but the foundries differ: the 265H is produced by TSMC, while the 356H is fabricated by Intel.

Cache hierarchies diverge noticeably. Both have 192 KB of L1 cache per core, but the 265H offers 3 MB of L2 per core versus 2.5 MB on the 356H. The L3 cache difference is even larger: 24 MB shared on the 265H versus 18 MB shared on the 356H. These cache advantages likely contribute to the 265H’s stronger multi-core rendering scores.

The integrated graphics solutions also differ. The 265H features Arc Graphics 140T, while the 356H uses Intel Xe3 Graphics. This represents a generational shift in GPU architecture, though benchmark data for graphics performance is not included in the comparison.

The 356H offers a more expansive PCIe configuration with Gen 5 and 12 lanes (CPU only), compared to Gen 5 and 8 lanes on the 265H. This could matter for users connecting multiple high-speed NVMe drives or external GPU enclosures. The 356H also supports a higher memory bandwidth of 115.2 GB/s versus 102.4 GB/s on the 265H.

Specification Differences

The core and thread counts are identical: both processors feature 16 cores and 16 threads. The base clocks differ, with the 265H starting at 2.20 GHz and the 356H at 1.90 GHz. Boost clocks show a larger gap, as the 265H reaches 5.30 GHz while the 356H peaks at 4.70 GHz.

Thermal design power (TDP) differs slightly, with the 265H rated at 28 W and the 356H at 25 W. Neither processor has an unlocked multiplier, so overclocking is not supported on either chip. The socket types are different: the 265H uses Intel BGA 2049, while the 356H uses Intel BGA 2540. This means they are not interchangeable in the same motherboard.

ECC memory support is present on the 265H but absent on the 356H. Both support DDR5 and LPDDR5X memory types with dual-channel buses. The 356H has a higher memory bandwidth figure of 115.2 GB/s compared to the 265H’s 102.4 GB/s. The part numbers also differ: SRQAQ for the 265H and SA4RGQ9EU for the 356H. Neither processor has a launch MSRP listed in the data.

Head-to-Head Benchmarks

The most significant win for the Intel Core Ultra 7 265H comes in Cinebench R23 multi-core, where it scores 19,940 against the 356H’s 18,395, an 8.4% advantage. This test is often indicative of sustained multi-threaded performance, and the margin is substantial. The 265H also wins Cinebench R23 single-core by 2% (2,080 vs 2,040), showing a consistent edge in the newer Cinebench suite.

PassMark single-thread results favor the 265H even more strongly, with a 6.4% lead (4,334 vs 4,072). This is mirrored in Cinebench R15 single-core, where the 265H wins by 1.3% (307 vs 303). The 265H also takes PassMark floating-point math by 5.8% (109,123 vs 103,128), PassMark integer math by 2.8% (85,479 vs 83,111), and PassMark find prime numbers by 2.4% (335 vs 327). Even the PassMark multithread test goes to the 265H, albeit by a razor-thin 0.1% (34,027 vs 33,978).

The Intel Core Ultra 7 356H counters with its own set of wins, led by the PassMark physics test where it scores 2,895 versus 2,497, a commanding 13.7% margin. This is the largest delta in either direction across all 17 benchmarks. The 356H also wins PassMark extended instructions by 3.9% (27,898 vs 26,805) and PassMark data encryption by 1.3% (26,345 vs 26,005). Smaller victories include PassMark random string sorting (40,990 vs 40,742, a 0.6% edge) and PassMark data compression (336,177 vs 334,711, a 0.4% lead).

The Cinebench R20 results are nearly tied. The 356H wins multi-core by just 0.2% (12,153 vs 12,131) and single-core by 0.2% as well (1,715 vs 1,712). Cinebench R15 multi-core also goes to the 356H by 2.2% (3,055 vs 2,989). These mixed results across different Cinebench versions highlight how benchmark methodology can influence outcomes, with the 265H dominating the R23 iteration while the 356H holds the edge in R15 and R20 multi-core tests.