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

Head-to-Head Benchmarks

The benchmark record shows a decisive overall victory for the Intel Core Ultra 7 265T, which wins 15 of the 17 recorded head-to-head tests. The largest margin appears in Cinebench R23 single-core, where the 265T scores 4455 against 2040 for the 356H, a 118.4% advantage. That is the single most dramatic gap in the entire comparison, and it signals a major difference in per-thread performance between the two parts.

Multi-core rendering also strongly favors the desktop chip. In Cinebench R23 multi-core, the 265T posts 31558 versus 18395, a 71.6% lead. Cinebench R20 multi-core shows a narrower but still clear 9.1% gap, with 13254 against 12153. Cinebench R15 multi-core sees a 4.1% edge for the 265T at 3180 versus 3055. The single-core R20 result mirrors the multi-core margin exactly at 9.1%, with 1871 against 1715, while R15 single-core shows a 48.2% gap favoring the 265T at 449 versus 303.

PassMark results reinforce the pattern. The 265T leads in floating point math by 25.9%, scoring 129817 against 103128. Integer math shows a 26.3% advantage at 104943 versus 83111. Data compression favors the 265T by 10.1% (370158 against 336177), and data encryption by 12.7% (29687 against 26345). The 265T also wins multithread by 9.1% (37084 against 33978), single-thread by 6.5% (4338 against 4072), random string sorting by 8.3% (44400 against 40990), and extended instructions by a smaller 2.5% (28609 against 27898).

The 356H takes two tests. The first is PassMark find prime numbers, where it scores 327 against 322, a 1.5% edge. The second is PassMark physics, where it posts 2895 against 2391, a 17.4% advantage. These are narrow or moderate wins in specialized workloads, and they do not offset the broader trend.

Average benchmark scores place the 265T at 47697, with a 90th percentile ranking among all CPUs. The 356H averages 41215, ranking in the 87th percentile. The 265T sits within 0.4% of the AMD Ryzen 9 PRO 5945 and within 0.5% of the Intel Core Ultra X9 378H, while trailing the AMD Ryzen 9 7900X3D by 0.4% and the AMD Ryzen 9 3900 by 0.5%. The 356H is effectively tied with the AMD Ryzen AI 5 PRO 440 at a 0% delta, sits 0.1% behind the Intel Core Ultra 7 366H, 0.4% behind the AMD Ryzen 9 5900X, and 0.6% ahead of the Intel Core Ultra X7 358H.

Architecture Differences

The two processors come from different Intel families. The Core Ultra 7 265T belongs to the Core Ultra Series 2, uses the Arrow Lake architecture with the Arrow Lake-S codename, and carries the Ultra 7 (Arrow Lake) generation label. It is a desktop part on Intel Socket 1851, launched on 2025-01-06 with a launch MSRP of $384. The Core Ultra 7 356H belongs to the Core Ultra Series 3, uses the Panther Lake architecture with the Panther Lake codename, and carries the Ultra 7 (Panther Lake-H) generation label. It is a mobile part on Intel BGA 2540 with a release date of 2026-01-04 and no recorded launch MSRP.

Core counts differ. The 265T has 20 cores and 20 threads, while the 356H has 16 cores and 16 threads. Neither chip enables simultaneous multithreading, so core and thread counts match. Base clocks favor the mobile chip at 1.90 GHz versus 1.50 GHz, but boost clocks favor the desktop chip at 5.30 GHz versus 4.70 GHz. The 265T carries a 35 W TDP, while the 356H is rated at 25 W.

Both chips are built on a 3 nm process, but the foundries differ. The 265T is fabricated by TSMC and has 17,800 million transistors on a 243 mm² die. The 356H is fabricated by Intel, and the database records no transistor count or die size for it.

Cache configurations also differ. Both use 192 KB of L1 per core. The 265T has 3 MB of L2 per core and 30 MB of shared L3. The 356H has 2.5 MB of L2 per core and 18 MB of shared L3. The larger L3 on the desktop chip aligns with its wider lead in multi-threaded rendering workloads.

Memory support shows a split. The 265T supports DDR5 on a dual-channel bus with 102.4 GB/s of bandwidth. The 356H supports both DDR5 and LPDDR5X on a dual-channel bus with 115.2 GB/s of bandwidth, a higher figure. Neither supports ECC memory. PCIe lanes also differ: the 265T provides Gen 5 with 20 lanes from the CPU, while the 356H provides Gen 5 with 12 lanes.

Integrated graphics differ by generation. The 265T uses Arc Xe-LPG Graphics with 64 execution units. The 356H uses Intel Xe3 Graphics. Both parts have locked multipliers, and both are listed as active in production.

The Verdict

The data points to the Intel Core Ultra 7 265T as the stronger processor in almost every measured category. It wins 15 of 17 head-to-head tests, including every Cinebench workload and the majority of PassMark workloads. Its 118.4% lead in Cinebench R23 single-core is the standout result, and its 71.6% lead in Cinebench R23 multi-core confirms that the advantage is not limited to lightly threaded tasks. The 265T also ranks higher overall, at the 90th percentile versus the 87th percentile, and its average benchmark score of 47697 is 15.7% above the 356H's 41215.

The 356H is not without merit. It wins PassMark physics by 17.4% and PassMark find prime numbers by 1.5%, and it offers a higher memory bandwidth figure at 115.2 GB/s. But those wins come in narrow or specialized tests, and the overall benchmark record does not favor the mobile chip.

The choice between the two depends on platform. The 265T is a desktop processor on Socket 1851 with a 35 W TDP and a $384 launch MSRP. The 356H is a mobile processor on BGA 2540 with a 25 W TDP. Desktop builders can use the 265T with its 20 CPU lanes and larger L3 cache. Mobile designs would rely on the 356H, which integrates Xe3 graphics and supports LPDDR5X memory. From a pure performance standpoint, the 265T is the clear winner in the recorded benchmarks.

FAQ

Q: Which processor is faster in single-core performance?

A: The Intel Core Ultra 7 265T wins all recorded single-core tests. It leads by 118.4% in Cinebench R23 single-core (4455 versus 2040), by 48.2% in Cinebench R15 single-core (449 versus 303), by 9.1% in Cinebench R20 single-core (1871 versus 1715), and by 6.5% in PassMark single-thread (4338 versus 4072).

Q: Does the mobile chip win any benchmark?

A: Yes. The Intel Core Ultra 7 356H wins PassMark physics by 17.4% (2895 versus 2391) and PassMark find prime numbers by 1.5% (327 versus 322).

Q: How do the core counts compare?

A: The Intel Core Ultra 7 265T has 20 cores and 20 threads. The Intel Core Ultra 7 356H has 16 cores and 16 threads. Neither processor supports simultaneous multithreading.

Q: What is the memory bandwidth difference?

A: The Intel Core Ultra 7 356H has a higher recorded memory bandwidth at 115.2 GB/s. The Intel Core Ultra 7 265T is rated at 102.4 GB/s. Both use a dual-channel memory bus, and neither supports ECC memory.

Q: Are these processors on the same manufacturing node?

A: Both are listed as 3 nm parts, but they use different foundries. The Intel Core Ultra 7 265T is fabricated by TSMC with 17,800 million transistors on a 243 mm² die. The Intel Core Ultra 7 356H is fabricated by Intel, with no transistor count or die size recorded.

Q: Which processor has more L3 cache?

A: The Intel Core Ultra 7 265T has 30 MB of shared L3 cache. The Intel Core Ultra 7 356H has 18 MB of shared L3 cache. The 265T also has 3 MB of L2 per core, while the 356H has 2.5 MB of L2 per core.

Where Each One Wins

The Intel Core Ultra 7 265T dominates rendering and compute-heavy workloads. Its Cinebench results are uniformly higher, with the largest margins in R23 multi-core (71.6%) and R23 single-core (118.4%). PassMark data compression, encryption, floating point math, integer math, multithread, single-thread, random string sorting, and extended instructions all favor the 265T. This makes it the better choice for users whose workloads rely on raw CPU throughput, large L3 cache (30 MB), and high boost clocks (5.30 GHz).

The Intel Core Ultra 7 356H wins in two specific areas: PassMark physics (2895 versus 2391) and PassMark find prime numbers (327 versus 322). Its higher base clock (1.90 GHz versus 1.50 GHz), higher memory bandwidth (115.2 GB/s versus 102.4 GB/s), and support for LPDDR5X memory give it a niche in memory-sensitive or physics-simulation tasks. Its lower 25 W TDP also makes it suitable for portable platforms where power draw matters more than peak performance.

For desktop users building a system around Socket 1851 with 20 PCIe Gen 5 lanes, the 265T is the stronger part in the recorded data. For mobile designs using BGA 2540 with 12 PCIe Gen 5 lanes and integrated Xe3 graphics, the 356H is the only option of the two, and its physics and prime-number wins provide some counterbalance to the 265T's broader lead. The benchmark record is clear: the 265T wins the majority of tests, often by substantial margins, while the 356H holds a narrow edge in a small set of specialized workloads.