AMD Ryzen 9 9955HX vs Intel Core Ultra X7 368H Comparison

Where Each One Wins

The benchmark data splits these two mobile processors into very different use cases. The AMD Ryzen 9 9955HX takes 11 of 15 head-to-head tests, and the Intel Core Ultra X7 368H wins 4. The AMD part dominates heavily threaded workloads, compression, encryption, and math-heavy tasks. The Intel part wins in single-core Cinebench tests, prime number finding, and physics simulations.

For content creation and productivity, the AMD Ryzen 9 9955HX is the clear choice. Its Cinebench R23 multicore score of 37159 versus 28221 for the Intel chip shows a 31.7% advantage in rendering workloads. Data compression results are even more lopsided: the AMD scores 731998 against 312927, a 133.9% gap. Integer math shows a 141.4% lead (212598 versus 88083). Extended instruction workloads favor AMD by 125.7% (57946 versus 25669).

The Intel Core Ultra X7 368H wins in specific latency-sensitive or lightly threaded scenarios. Its Cinebench R23 single-core score of 3984 beats the AMD's 2174 by 45.4%. In Cinebench R15 single-core, Intel scores 401 versus 336, a 16.2% win. The passmark physics test goes to Intel 2857 versus 2720, a 4.8% margin. Prime number finding favors Intel 321 versus 287, a 10.6% edge.

The overall average benchmark score tells the same story: AMD sits at 91199 with a 96th percentile ranking among all CPUs, while Intel sits at 40518 with an 87th percentile ranking. The AMD chip also holds a 9.7% lead in passmark single-thread scoring (4393 versus 4005), which suggests that even in some single-threaded tasks, the AMD part can win despite losing the Cinebench single-core tests.

Architecture Differences

The two processors come from fundamentally different design philosophies. The AMD Ryzen 9 9955HX uses the Zen 5 architecture on a 4 nm TSMC process, with the Fire Range codename. It is a 16-core, 32-thread part. The Intel Core Ultra X7 368H uses the Panther Lake architecture on Intel's 3 nm process, also with 16 cores but only 16 threads, meaning no simultaneous multithreading.

Cache configurations diverge significantly. AMD gives each core 80 KB of L1 and 1 MB of L2, with 64 MB of shared L3 cache. Intel gives each core 192 KB of L1 and 2.5 MB of L2, but only 18 MB of shared L3. The larger AMD L3 pool likely contributes to its strong compression and encryption results. Intel's larger per-core L1 and L2 helps its single-core performance in certain tests.

Memory support differs as well. AMD supports DDR5 with dual-channel configuration and 89.6 GB/s bandwidth. Intel supports LPDDR5X with dual-channel and 153.6 GB/s bandwidth. ECC memory is supported on AMD but not on Intel. PCIe lanes also differ: AMD provides 28 Gen 5 lanes from the CPU, while Intel provides only 4 Gen 5 lanes.

The integrated graphics differ. AMD uses the Radeon 610M, while Intel uses the Arc B390. The Intel part has a lower TDP of 25 watts versus AMD's 55 watts. AMD's multiplier is unlocked, while Intel's is locked. The AMD socket is AMD Socket FL1, and the Intel socket is Intel BGA 2540. AMD's transistor count is listed at 16,630 million across two 70.6 mm² dies, while Intel's transistor count and die size are not recorded.

Head-to-Head Benchmarks

The largest win for AMD comes in passmark integer math, where it scores 212598 against Intel's 88083, a 141.4% advantage. Data compression shows a 133.9% gap (731998 versus 312927). Extended instructions follow at 125.7% (57946 versus 25669). Cinebench R15 multicore shows a 107.6% gap (5905 versus 2844). Random string sorting goes to AMD by 104.5% (77890 versus 38093). Passmark multithread shows a 70.4% lead (56171 versus 32956). Data encryption favors AMD by 48% (37330 versus 25228). Cinebench R23 multicore favors AMD by 31.7% (37159 versus 28221). Floating point math favors AMD by 29.3% (136682 versus 105681). Passmark single-thread favors AMD by 9.7% (4393 versus 4005).

The biggest win for Intel is Cinebench R23 single-core, where it scores 3984 versus 2174, a 45.4% advantage. Cinebench R15 single-core goes to Intel by 16.2% (401 versus 336). Prime number finding favors Intel by 10.6% (321 versus 287). Passmark physics favors Intel by 4.8% (2857 versus 2720).

The Intel chip has no benchmark in the head-to-head set for Cinebench R20, but it does record standalone scores of 11852 multicore and 1673 single-core. The AMD chip has no R20 scores recorded.

The Verdict

The data points to a clear split. The AMD Ryzen 9 9955HX is the processor for multicore-heavy workloads: rendering, video encoding, data compression, encryption, and any task that can use its 32 threads. Its 96th percentile ranking and 91199 average score place it far above the Intel part, which sits at 87th percentile and 40518 average. The AMD chip also has a 9.7% single-thread win in passmark, meaning it is not purely a multicore specialist.

The Intel Core Ultra X7 368H wins in specific lightly threaded and latency-sensitive tests. Its Cinebench single-core scores are substantially higher, and it wins physics and prime number tests. However, its 16 threads versus 32 threads limits its multicore ceiling. The 25 watt TDP suggests it is designed for efficiency, but the recorded data shows lower raw performance in most workloads.

For a user who prioritizes rendering, compilation, or data processing, the AMD Ryzen 9 9955HX delivers 31.7% to 141.4% higher scores across the major multicore tests. For a user who needs maximum single-core responsiveness in lightly threaded applications, the Intel part offers a 45.4% advantage in Cinebench R23 single-core. The AMD part also carries ECC memory support and an unlocked multiplier, while the Intel part does not. The AMD part has a larger L3 cache (64 MB versus 18 MB), which likely explains its dominance in compression and encryption.

FAQ

Q: Which processor has more threads?

A: The AMD Ryzen 9 9955HX has 32 threads, while the Intel Core Ultra X7 368H has 16 threads. Both have 16 cores.

Q: What is the single-core performance difference in Cinebench R23?

A: The Intel Core Ultra X7 368H scores 3984, which is 45.4% higher than the AMD Ryzen 9 9955HX's 2174.

Q: Which processor wins in multicore rendering?

A: The AMD Ryzen 9 9955HX scores 37159 in Cinebench R23 multicore, a 31.7% advantage over the Intel's 28221. In Cinebench R15 multicore, AMD leads 5905 versus 2844, a 107.6% gap.

Q: How does memory bandwidth compare?

A: The Intel Core Ultra X7 368H supports LPDDR5X with 153.6 GB/s bandwidth. The AMD Ryzen 9 9955HX supports DDR5 with 89.6 GB/s bandwidth. Both use dual-channel configurations.

Q: Does either processor support ECC memory?

A: The AMD Ryzen 9 9955HX supports ECC memory. The Intel Core Ultra X7 368H does not.

Q: What are the cache sizes?

A: The AMD Ryzen 9 9955HX has 80 KB L1 and 1 MB L2 per core, with 64 MB shared L3. The Intel Core Ultra X7 368H has 192 KB L1 and 2.5 MB L2 per core, with 18 MB shared L3.

Specification Differences

| Specification | AMD Ryzen 9 9955HX | Intel Core Ultra X7 368H |

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

| Architecture | Zen 5 | Panther Lake |

| Process node | 4 nm | 3 nm |

| Foundry | TSMC | Intel |

| Cores | 16 | 16 |

| Threads | 32 | 16 |

| Base clock | 2.50 GHz | 2.00 GHz |

| Boost clock | 5.40 GHz | 5.00 GHz |

| TDP | 55 W | 25 W |

| L1 cache | 80 KB (per core) | 192 KB (per core) |

| L2 cache | 1 MB (per core) | 2.5 MB (per core) |

| L3 cache | 64 MB (shared) | 18 MB (shared) |

| Memory support | DDR5 | LPDDR5X |

| Memory bandwidth | 89.6 GB/s | 153.6 GB/s |

| ECC memory | Yes | No |

| PCIe | Gen 5, 28 lanes (CPU only) | Gen 5, 4 lanes (CPU only) |

| Integrated graphics | Radeon 610M | Arc B390 |

| Socket | AMD Socket FL1 | Intel BGA 2540 |

| Multiplier unlocked | Yes | No |

| Transistors | 16,630 million | Not recorded |

| Die size | 2x 70.6 mm² | Not recorded |