AMD Ryzen 9 270 vs Intel Core Ultra 7 356H Comparison

The Intel Core Ultra 7 356H and AMD Ryzen 9 270 are two very different mobile processors, and the benchmark data shows a clear split in their strengths. The Intel part wins 11 of the 17 recorded head-to-head tests, while the AMD part takes 6, but the margins in each direction tell a more nuanced story than the raw win count suggests. Neither chip is a universal winner; each dominates in specific workloads, and the right choice depends entirely on the intended use case.

Head-to-Head Benchmarks

The most dramatic single result belongs to Intel in the PassMark find prime numbers test. The Core Ultra 7 356H scores 327 versus 88 for the Ryzen 9 270, a 271.6% advantage. This is not a typical workload, but it shows a massive difference in one specific algorithmic pattern. Similarly, in PassMark physics, Intel leads 2895 to 1365, a 112.1% margin, indicating a strong showing in simulated physics calculations.

In floating point math, Intel is again far ahead, scoring 103128 against 60122, a 71.5% lead. Data encryption also favors Intel, with 26345 versus 20852, a 26.3% advantage. The multi-threaded PassMark score goes to Intel as well, 33978 against 29089, a 16.8% win. The Cinebench R15 multi-core test shows Intel ahead at 3055 versus 2664, a 14.7% margin, and the R20 multi-core test follows the same pattern, with Intel at 12153 versus 11103, a 9.5% lead.

On the single-core side, the results are mixed. The Cinebench R20 single-core test goes to Intel, 1715 versus 1567, a 9.4% advantage. PassMark single-thread also favors Intel, 4072 versus 3784, a 7.6% lead. Extended instructions go to Intel by a smaller margin, 27898 versus 26729, a 4.4% difference.

AMD fights back hard in other areas. The Cinebench R23 multi-core test is a decisive AMD win, 26438 versus 18395, a 30.4% lead for the Ryzen 9 270. The R23 single-core result is even more lopsided, with AMD at 3732 versus Intel's 2040, a 45.3% margin. In the older R15 single-core test, AMD also wins, 376 versus 303, a 19.4% edge.

PassMark integer math goes to AMD, 98266 versus 83111, a 15.4% lead. Data compression favors AMD, 351398 versus 336177, a 4.3% margin, and random string sorting also goes to AMD, 42819 versus 40990, a 4.3% difference.

Looking at the overall averages, the two chips are extremely close. The Intel part has an average benchmark score of 41215, placing it in the 87th percentile of all CPUs. Its nearest rival in the database is the AMD Ryzen AI 5 PRO 440 at 41208, a 0% delta, and the Intel Core Ultra 7 366H at 41263, a -0.1% delta. The AMD Ryzen 9 270 has an average score of 40246, also in the 87th percentile. Its closest comparison is the Intel Core i9-13905H at 40313, a -0.2% delta, and the Intel Xeon 6369P at 40327, also -0.2%. The average scores are within 2.4% of each other, which means the overall throughput is comparable, but the workload-specific swings are enormous.

Architecture Differences

The two processors come from completely different design philosophies. The Intel Core Ultra 7 356H uses the Panther Lake architecture, built on a 3 nm process at Intel's own foundry. It has 16 cores and 16 threads. The AMD Ryzen 9 270 uses the Zen 4 architecture, codenamed Hawk Point, built on a 4 nm process at TSMC. It has 8 cores and 16 threads, relying on simultaneous multithreading to match the Intel thread count.

The cache layouts differ significantly. Intel allocates 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. AMD allocates 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. Despite the smaller per-core L2 on the AMD part, the total cache configuration favors Intel in L3 capacity, which can help in certain data-heavy workloads.

Clock speeds are another major divide. The Intel part has a base clock of 1.90 GHz and a boost clock of 4.70 GHz. The AMD part runs much higher, with a base clock of 4.00 GHz and a boost clock of 5.20 GHz. This explains the single-core Cinebench R23 result, where AMD's higher boost clock and Zen 4 IPC produce a 45.3% lead. However, the Intel part compensates with more physical cores and a lower thermal design power. The Intel TDP is 25 watts, while the AMD TDP is 45 watts, meaning the Intel chip draws less power under sustained loads.

Memory support also differs. Intel supports both DDR5 and LPDDR5X with a dual-channel memory bus and a memory bandwidth of 115.2 GB/s. AMD supports DDR5 with a dual-channel bus and a memory bandwidth of 89.6 GB/s. The Intel part has a higher theoretical memory bandwidth, which can benefit workloads that are memory-bound. PCIe connectivity differs as well: Intel offers Gen 5 with 12 CPU lanes, while AMD offers Gen 4 with 20 CPU lanes. The integrated graphics are different, with Intel using Xe3 Graphics and AMD using the Radeon 780M.

The Intel part is packaged on the Intel BGA 2540 socket, while the AMD part uses the AMD Socket FP8. Neither chip has an unlocked multiplier. The AMD part has a listed transistor count of 25,000 million and a die size of 178 mm², while the Intel database entry does not list transistor or die size figures. Both processors are active in production and target the mobile market segment.

The Verdict

The recorded data shows two distinct profiles. The Intel Core Ultra 7 356H is the better choice for workloads that stress encryption, floating point math, physics simulation, and prime number calculations. It also wins the PassMark multi-thread test and the older Cinebench R15 and R20 multi-core tests. If the primary use case involves these patterns, the Intel part has clear advantages, some of them by very large margins.

The AMD Ryzen 9 270 is the better choice for newer Cinebench versions, specifically R23, where it leads by 30.4% in multi-core and 45.3% in single-core. It also wins in integer math, data compression, and random string sorting. For users who rely on the R23 benchmark as a proxy for modern rendering and content creation performance, the AMD part is the stronger option. The higher boost clock of 5.20 GHz versus 4.70 GHz helps explain the single-core dominance.

The power envelope is a deciding factor for laptop buyers. The Intel part has a 25 watt TDP versus 45 watts for AMD, so the Intel chip is more efficient in terms of rated power draw. The AMD part uses more power to achieve its higher clock speeds and R23 scores. For thin-and-light machines, the Intel part is the more sensible choice, while the AMD part may fit better in larger laptops with stronger cooling.

The average benchmark scores are nearly identical, with Intel at 41215 and AMD at 40246, and both sit in the 87th percentile. There is no overall winner in raw throughput. The choice hinges on which benchmarks matter more to the user. The data does not support a universal recommendation.

FAQ

Q: Which CPU has more cores?

A: The Intel Core Ultra 7 356H has 16 cores, while the AMD Ryzen 9 270 has 8 cores. Both have 16 threads.

Q: What is the largest single benchmark lead in the head-to-head data?

A: The Intel Core Ultra 7 356H leads by 271.6% in the PassMark find prime numbers test, scoring 327 versus 88 for the AMD Ryzen 9 270.

Q: Which CPU has the higher boost clock?

A: The AMD Ryzen 9 270 has a boost clock of 5.20 GHz, while the Intel Core Ultra 7 356H has a boost clock of 4.70 GHz.

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

A: The AMD Ryzen 9 270 wins by 30.4%, scoring 26438 versus 18395 for the Intel Core Ultra 7 356H.

Q: Which CPU has higher memory bandwidth?

A: The Intel Core Ultra 7 356H has a memory bandwidth of 115.2 GB/s, while the AMD Ryzen 9 270 has 89.6 GB/s. Both use a dual-channel memory bus.

Q: Are both CPUs in the same performance percentile?

A: Yes, both are in the 87th percentile of all CPUs according to the database.

Where Each One Wins

The Intel Core Ultra 7 356H wins in 11 of the 17 head-to-head tests. Its strengths are concentrated in specialized compute tasks. The 271.6% lead in prime number finding and the 112.1% lead in physics calculations make it the obvious pick for scientific computing, engineering simulation, and any workload that involves heavy integer-based algorithms or physical modeling. The 71.5% lead in floating point math reinforces this, as does the 26.3% lead in data encryption. For security-related tasks like encryption and hashing, the Intel part is clearly superior. The PassMark multi-thread score of 33978 versus 29089 shows a 16.8% advantage in general multi-threaded throughput, and the older Cinebench R15 and R20 multi-core wins by 14.7% and 9.5% respectively indicate solid performance in legacy rendering workloads.

The AMD Ryzen 9 270 wins in 6 tests, but some of these wins are substantial. The 45.3% lead in Cinebench R23 single-core is the largest single-core margin, making it the better choice for lightly threaded applications that rely on high clock speeds, such as many games or older software. The 30.4% lead in Cinebench R23 multi-core is the largest multi-core margin, which is significant for modern rendering engines that scale well with the R23 workload. The 15.4% lead in integer math and the 4.3% leads in data compression and random string sorting give it an edge in general productivity tasks and file archiving. For users who prioritize the R23 benchmark as a measure of current-generation performance, the AMD part is the stronger option.

Specification Differences

The two processors differ in nearly every major specification category. The Intel Core Ultra 7 356H uses the Panther Lake architecture on a 3 nm process, while the AMD Ryzen 9 270 uses the Zen 4 architecture on a 4 nm process. Intel has 16 cores and 16 threads, AMD has 8 cores and 16 threads. The base clock is 1.90 GHz for Intel and 4.00 GHz for AMD, while the boost clock is 4.70 GHz for Intel and 5.20 GHz for AMD. The TDP is 25 watts for Intel and 45 watts for AMD.

The socket types are different: Intel uses Intel BGA 2540, AMD uses AMD Socket FP8. Cache allocations differ across all levels: Intel has 192 KB L1 per core, 2.5 MB L2 per core, and 18 MB shared L3; AMD has 64 KB L1 per core, 1 MB L2 per core, and 16 MB shared L3. Memory support is broader on Intel, with DDR5 and LPDDR5X, while AMD supports DDR5 only. The memory bus is dual-channel for both, but the bandwidth is 115.2 GB/s for Intel and 89.6 GB/s for AMD. PCIe support is Gen 5 with 12 CPU lanes for Intel and Gen 4 with 20 CPU lanes for AMD. The integrated graphics are Intel Xe3 Graphics for the Core Ultra and Radeon 780M for the Ryzen. Neither chip supports ECC memory. The AMD part has a listed transistor count of 25,000 million and a die size of 178 mm², while no such figures are recorded for Intel. Both are active mobile processors, with the Intel part released on 2026-01-04 and the AMD part on 2025-01-05.