AMD Ryzen AI Max+ 392 vs Intel Core Ultra X9 388H Comparison

Head-to-Head Benchmarks

The recorded data splits cleanly between AMD and Intel strengths. The AMD Ryzen AI Max+ 392 wins 5 of the 11 compared workloads, while the Intel Core Ultra X9 388H takes 6. The margin of victory matters more than the count.

The largest single win belongs to AMD in integer math. The Ryzen AI Max+ 392 scores 152,414 against 90,882 for the Intel part, a 67.7% advantage. That is the biggest delta in the entire comparison and points to a substantial lead in general number crunching. Data compression follows a similar pattern: AMD scores 554,760 versus 361,763, a 53.3% lead. Extended instructions also favor AMD by 52.5%, with scores of 45,666 against 29,943. These three workloads are all heavily compute-bound, and AMD dominates them by wide margins.

Random string sorting goes to AMD at 59,487 versus 44,010, a 35.2% edge. Multithread performance also favors AMD, with 45,231 against 36,811, a 22.9% advantage. The multithread score is particularly informative because the Intel chip has more physical cores yet still trails in the aggregate threaded workload.

Intel answers in single-thread performance. The Core Ultra X9 388H scores 4,280 in single-thread, beating AMD's 3,927 by 8.2%. That advantage carries into several other tests. Floating point math goes to Intel at 112,550 versus 99,548, an 11.6% lead. Prime number finding favors Intel at 358 versus 320, a 10.6% edge. Physics simulation also goes Intel's way at 3,226 versus 2,887, a 10.5% margin. Data encryption is the narrowest Intel win: 28,490 versus 27,784, only 2.5% ahead.

The pattern is consistent. Intel wins where per-core efficiency and clock speed matter most, while AMD wins where thread scaling and instruction throughput dominate. The single-thread scores confirm this: Intel's 4,280 versus AMD's 3,927. The multithread scores reverse it: AMD's 45,231 versus Intel's 36,811.

The Verdict

The data supports a clear division of use cases. The AMD Ryzen AI Max+ 392 is the stronger processor for heavily threaded workloads, integer math, compression, and extended instruction sets. Its 67.7% lead in integer math and 53.3% lead in data compression are decisive. Any workload that scales across cores will favor AMD.

The Intel Core Ultra X9 388H is the stronger processor for single-threaded responsiveness, floating point math, physics simulation, and encryption. Its 8.2% single-thread lead and 11.6% floating point lead are meaningful for applications that depend on per-core speed rather than raw thread count.

Neither chip is a universal winner. The AMD part sits at the 96th percentile among all CPUs, while Intel sits at the 88th percentile. AMD's nearest rival, the Intel Xeon 654, is 0.2% behind in average score. Intel's nearest rival, the AMD Ryzen 5 7500X3D, is 0.2% behind. Both chips land in competitive territory, but AMD's overall average benchmark score of 90,541 more than doubles Intel's 44,466.

Architecture Differences

The two processors use fundamentally different designs. AMD builds on Zen 5 architecture with the Strix Halo codename, fabricated on a 4 nm process at TSMC. Intel uses Panther Lake architecture, fabricated on its own 3 nm process. The process node difference is small but real: Intel claims the smaller node.

Core counts diverge sharply. AMD uses 12 cores and 24 threads, relying on simultaneous multithreading to double thread count. Intel uses 16 cores and 16 threads, with no SMT support. This explains the multithread result: AMD's 24 threads outperform Intel's 16 threads by 22.9% despite Intel having more physical cores.

Cache layouts differ substantially. AMD provides 64 MB of shared L3 cache, while Intel provides 18 MB. Per-core L1 cache favors Intel at 192 KB per core versus AMD's 80 KB. Per-core L2 also favors Intel at 3 MB versus AMD's 1 MB. The total cache picture is complex, but AMD's much larger L3 pool likely helps in data-heavy workloads.

Memory architecture is another major split. AMD uses quad-channel LPDDR5X with 256.0 GB/s bandwidth and ECC support. Intel uses dual-channel LPDDR5X with 153.6 GB/s and no ECC. AMD's memory bandwidth is 66.7% higher, which contributes to its compression and integer math wins. ECC support is present on AMD only.

PCIe connectivity differs as well. AMD provides Gen 4 with 16 CPU lanes. Intel provides Gen 5 with 4 CPU lanes. The Intel lanes are faster per lane but far fewer in count. For expansion-heavy systems, AMD's lane count is more flexible.

Clock speeds favor Intel at the top end. Intel boosts to 5.10 GHz versus AMD's 5.00 GHz. Base clocks favor AMD at 3.20 GHz versus Intel's 2.10 GHz. The boost clock difference of 0.10 GHz is small, but the base clock difference of 1.10 GHz is substantial and helps explain AMD's sustained multithread performance.

Thermal design power favors Intel on paper: 25 W versus AMD's 55 W. The AMD part consumes more power and produces more heat, which is consistent with its higher base clock and larger cache. Socket types differ completely: AMD uses Socket FP11, Intel uses BGA 2540.

Integrated graphics also differ. AMD pairs with Radeon 8060S, Intel with Arc B390. The benchmark data does not include graphics tests, so no performance comparison is possible from the recorded measurements.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra X9 388H has 16 cores, while the AMD Ryzen AI Max+ 392 has 12 cores. However, AMD has 24 threads to Intel's 16, because AMD supports simultaneous multithreading.

Q: Which processor is faster in single-threaded workloads?

A: Intel is faster. The Core Ultra X9 388H scores 4,280 in the single-thread test, 8.2% ahead of AMD's 3,927.

Q: Which processor is faster in multithreaded workloads?

A: AMD is faster. The Ryzen AI Max+ 392 scores 45,231 in the multithread test, 22.9% ahead of Intel's 36,811.

Q: How does memory bandwidth compare?

A: AMD has 256.0 GB/s of memory bandwidth over a quad-channel LPDDR5X bus. Intel has 153.6 GB/s over a dual-channel LPDDR5X bus. AMD also supports ECC memory; Intel does not.

Q: What process nodes do these chips use?

A: AMD uses a 4 nm process at TSMC. Intel uses a 3 nm process at its own foundry.

Q: How do the overall benchmark scores compare?

A: AMD's average benchmark score is 90,541, placing it at the 96th percentile of all CPUs. Intel's average is 44,466, placing it at the 88th percentile.

Where Each One Wins

AMD wins in data compression, extended instructions, integer math, multithread performance, and random string sorting. These are workloads that benefit from thread count, large cache, and high memory bandwidth. The 53.3% compression lead and 67.7% integer math lead make AMD the clear choice for build servers, video encoding pipelines, scientific computing, and any batch processing that can utilize 24 threads.

Intel wins in data encryption, prime number finding, floating point math, physics simulation, and single-thread performance. These are workloads that benefit from high boost clocks and per-core efficiency. The 8.2% single-thread lead and 11.6% floating point lead make Intel the better option for interactive applications, lightly threaded design tools, and workloads where latency per operation matters more than total throughput.

The power envelope reinforces the split. Intel's 25 W TDP versus AMD's 55 W TDP means Intel fits into thinner, lighter systems with smaller cooling solutions. AMD's higher power budget supports its larger cache and quad-channel memory, but requires more substantial thermal management.

Specification Differences

| Specification | AMD Ryzen AI Max+ 392 | Intel Core Ultra X9 388H |

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

| Cores | 12 | 16 |

| Threads | 24 | 16 |

| Base clock | 3.20 GHz | 2.10 GHz |

| Boost clock | 5.00 GHz | 5.10 GHz |

| TDP | 55 W | 25 W |

| Socket | AMD Socket FP11 | Intel BGA 2540 |

| Architecture | Zen 5 | Panther Lake |

| Codename | Strix Halo | Panther Lake |

| Process node | 4 nm | 3 nm |

| Foundry | TSMC | Intel |

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

| L2 cache | 1 MB per core | 3 MB per core |

| L3 cache | 64 MB shared | 18 MB shared |

| Memory bus | Quad-channel | Dual-channel |

| Memory bandwidth | 256.0 GB/s | 153.6 GB/s |

| ECC memory | Yes | No |

| PCIe | Gen 4, 16 lanes | Gen 5, 4 lanes |

| Integrated graphics | Radeon 8060S | Arc B390 |