Intel Core 5 320 vs Intel Core Ultra 7 356H Comparison

Intel Core 5 320 and Intel Core Ultra 7 356H are two mobile processors that appear close in name but are far apart in capability. The data shows a clear hierarchy, with the Core Ultra 7 356H dominating every single benchmark recorded in the database. The Core 5 320 is a 6-core, 6-thread part built on the Wildcat Lake architecture, while the Core Ultra 7 356H is a 16-core, 16-thread processor from the Panther Lake series. The benchmark results indicate that the Core Ultra 7 356H is not just faster, but often more than twice as fast in multi-threaded workloads, making the comparison less about nuance and more about scale.

Where Each One Wins

The Core Ultra 7 356H wins in every category measured, so the question is not which processor wins, but by how much in each type of workload. The largest margins appear in multi-threaded tasks. In Cinebench R23 multi-core, the Core Ultra 7 356H scores 18395 against 6197 for the Core 5 320, a 66.3% advantage. This pattern repeats across PassMark tests, with the Ultra 7 356H delivering 33978 in multithread versus 15450, 103128 in floating point math versus 42440, and 83111 in integer math versus 32323. These are all heavy parallel workloads where the 16-core part simply has more resources to draw on.

Single-threaded performance is closer, but the Ultra 7 356H still leads. In Cinebench R23 single-core, the Ultra 7 356H scores 2040 versus 1926, a 5.6% edge. The PassMark single thread test shows a narrower margin, 4072 versus 4045, which is only 0.7% apart. The Core 5 320 does not win any of the 17 recorded head-to-head benchmarks. Its best relative performance is in the single-threaded PassMark test where it trails by less than 1%. For workloads that are lightly threaded, the Core 5 320 is competitive, but for anything that scales across cores, the Ultra 7 356H pulls far ahead.

The data suggests the Core 5 320 is positioned for tasks where single-core speed matters most and power draw is a concern. The Ultra 7 356H is for users who need maximum throughput. The Core 5 320 has a 15 W TDP, while the Ultra 7 356H uses 25 W, so the smaller chip trades performance for efficiency. The benchmark results confirm this trade-off is substantial.

Architecture Differences

The two processors come from different Intel design families. The Core 5 320 uses the Wildcat Lake architecture, while the Core Ultra 7 356H uses Panther Lake. Both are built on a 3 nm process at Intel, but their internal configurations differ significantly. The Core 5 320 has 6 cores and 6 threads, meaning no hyperthreading. The Core Ultra 7 356H has 16 cores and 16 threads, also without hyperthreading, but with far more physical cores.

Cache allocation also differs. The Core 5 320 has 192 KB of L1 cache, 2.5 MB of L2 cache, and 6 MB of shared L3 cache. The Core Ultra 7 356H lists 192 KB of L1 per core and 2.5 MB of L2 per core, with 18 MB of shared L3 cache. The L3 difference is notable, 18 MB versus 6 MB, which helps the larger chip keep more working data close to the cores.

Memory support is another differentiator. The Core 5 320 uses a single-channel memory bus with 59.7 GB/s of bandwidth. The Core Ultra 7 356H uses a dual-channel bus with 115.2 GB/s, nearly double the bandwidth. Both support DDR5 and LPDDR5X memory. The wider memory bus on the Ultra 7 356H is critical for feeding its 16 cores, and the benchmark data reflects this in the multi-threaded results.

PCIe connectivity also differs. The Core 5 320 offers Gen 4 with 6 lanes (CPU only), while the Core Ultra 7 356H offers Gen 5 with 12 lanes (CPU only). The integrated graphics differ as well, with the Core 5 320 using Intel Xe3 Graphics with 2 Xe cores, while the Ultra 7 356H uses a full Intel Xe3 Graphics implementation. The sockets are different, BGA 1516 for the Core 5 320 and BGA 2540 for the Ultra 7 356H, meaning they are not interchangeable in a system design.

The base clock of the Core 5 320 is 1.50 GHz with a boost of 4.60 GHz. The Ultra 7 356H has a base clock of 1.90 GHz and a boost of 4.70 GHz. The boost clocks are close, but the Ultra 7 356H sustains higher performance across more cores, as the multi-core benchmarks show. The release dates differ, with the Ultra 7 356H launching on 2026-01-04 and the Core 5 320 on 2026-04-15.

Head-to-Head Benchmarks

The head-to-head data lists 17 benchmark comparisons, and the Core Ultra 7 356H wins all of them. The smallest margin is in the PassMark single thread test, where the Ultra 7 356H scores 4072 against 4045, a 0.7% difference. The Cinebench R23 single-core test shows a 5.6% lead for the Ultra 7 356H, 2040 versus 1926. These single-threaded results are close enough that real-world lightly threaded applications would feel similar.

The multi-threaded results tell a different story. In Cinebench R15 multi-core, the Ultra 7 356H scores 3055 versus 1054, a 65.5% lead. Cinebench R20 multi-core shows 12153 versus 5462, a 55.1% advantage. Cinebench R23 multi-core shows 18395 versus 6197, a 66.3% lead. The PassMark multithread test shows 33978 versus 15450, a 54.5% advantage. These are large, consistent margins across different rendering and compute workloads.

The PassMark suite shows the same pattern. Data compression: 336177 versus 148779, a 55.7% lead. Data encryption: 26345 versus 10984, a 58.3% lead. Extended instructions: 27898 versus 13262, a 52.5% lead. Find prime numbers: 327 versus 110, a 66.4% lead. Floating point math: 103128 versus 42440, a 58.8% lead. Integer math: 83111 versus 32323, a 61.1% lead. Physics: 2895 versus 1221, a 57.8% lead. Random string sorting: 40990 versus 18038, a 56% lead.

The average benchmark score reflects the overall gap. The Core 5 320 has an average benchmark score of 18023, while the Ultra 7 356H has an average of 41215. The percentile ranking also differs, with the Core 5 320 at the 72nd percentile of all CPUs and the Ultra 7 356H at the 87th percentile. The nearest rivals for the Core 5 320 include the AMD Ryzen 5 1600 with an average score of 17994 (0.2% delta) and the Intel Core i5-1334U with 18154 (-0.7% delta). The nearest rivals for the Ultra 7 356H include the AMD Ryzen AI 5 PRO 440 with 41208 (0% delta) and the Intel Core Ultra 7 366H with 41263 (-0.1% delta).

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra 7 356H has 16 cores and 16 threads, while the Intel Core 5 320 has 6 cores and 6 threads.

Q: How much faster is the Core Ultra 7 356H in multi-core rendering?

A: In Cinebench R23 multi-core, the Ultra 7 356H scores 18395 versus 6197 for the Core 5 320, a 66.3% advantage.

Q: Is the single-threaded performance difference large?

A: No, it is small. The PassMark single thread test shows 4072 for the Ultra 7 356H versus 4045 for the Core 5 320, a 0.7% difference. Cinebench R23 single-core shows a 5.6% lead for the Ultra 7 356H.

Q: What are the memory bandwidth differences?

A: The Core 5 320 uses a single-channel bus with 59.7 GB/s of bandwidth. The Core Ultra 7 356H uses a dual-channel bus with 115.2 GB/s of bandwidth.

Q: Do both processors support the same memory types?

A: Yes, both support DDR5 and LPDDR5X memory. Neither supports ECC memory.

Q: What is the TDP of each processor?

A: The Core 5 320 has a TDP of 15 W. The Core Ultra 7 356H has a TDP of 25 W.

The Verdict

The data is unambiguous. The Intel Core Ultra 7 356H is the faster processor in every recorded benchmark. For multi-threaded workloads such as rendering, data compression, encryption, and physics simulations, the Ultra 7 356H delivers roughly 55% to 66% higher scores across the board. The 16-core configuration, 18 MB of L3 cache, and dual-channel memory bandwidth are the structural reasons for this dominance.

The Intel Core 5 320 is not without merit. Its single-threaded performance is very close to the Ultra 7 356H, trailing by 5.6% in Cinebench R23 single-core and 0.7% in PassMark single thread. Its 15 W TDP is lower than the 25 W TDP of the Ultra 7 356H, which could matter for battery life in mobile systems. However, the 6-core configuration and single-channel memory limit its multi-threaded capability severely.

The launch MSRP of the Core 5 320 is $340. The Core Ultra 7 356H has no launch MSRP recorded in the database. The average benchmark score of the Ultra 7 356H is 41215, more than double the 18023 average of the Core 5 320. The percentile rankings, 87th versus 72nd, place the Ultra 7 356H in a higher performance tier overall.

For users who run heavily threaded applications, the Ultra 7 356H is the clear choice based on the recorded data. For users who prioritize single-threaded responsiveness and lower power draw, the Core 5 320 is competitive, but it cannot match the Ultra 7 356H in any scenario where multiple cores are utilized. The benchmark database records no wins for the Core 5 320 in any of the 17 head-to-head comparisons.

Specification Differences

| Specification | Intel Core 5 320 | Intel Core Ultra 7 356H |

| --- | --- | --- |

| Cores | 6 | 16 |

| Threads | 6 | 16 |

| Base Clock | 1.50 GHz | 1.90 GHz |

| Boost Clock | 4.60 GHz | 4.70 GHz |

| TDP | 15 W | 25 W |

| Socket | Intel BGA 1516 | Intel BGA 2540 |

| Architecture | Wildcat Lake | Panther Lake |

| Codename | Wildcat Lake | Panther Lake |

| Process Node | 3 nm | 3 nm |

| L1 Cache | 192 KB | 192 KB (per core) |

| L2 Cache | 2.5 MB | 2.5 MB (per core) |

| L3 Cache | 6 MB (shared) | 18 MB (shared) |

| Memory Bus | Single-channel | Dual-channel |

| Memory Bandwidth | 59.7 GB/s | 115.2 GB/s |

| PCIe | Gen 4, 6 Lanes (CPU only) | Gen 5, 12 Lanes (CPU only) |

| Integrated Graphics | Intel Xe3 Graphics (2 Xe) | Intel Xe3 Graphics |

| Release Date | 2026-04-15 | 2026-01-04 |

| Launch MSRP | $340 | None recorded |

| Part Number | SAE3H | SA4RGQ9EU |