AMD Ryzen AI 7 450 vs Intel Core Ultra X9 388H Comparison

The Verdict

The benchmark data presents an unambiguous picture. The Intel Core Ultra X9 388H wins every recorded head-to-head comparison against the AMD Ryzen AI 7 450, taking all 15 benchmark tests. The Intel part holds a higher average benchmark score of 44466 compared to 39485 for the AMD, and it sits at the 88th percentile of all CPUs against the AMD's 87th. For any workload where raw performance is the deciding factor, the Intel Core Ultra X9 388H is the clear pick from this dataset.

The AMD Ryzen AI 7 450 is not without its own position. Its 8-core, 16-thread configuration with Zen 5 architecture and a 28 W TDP delivers competitive results in lightly threaded tasks, trailing the Intel part by only 2.6% in integer math and 3.1% in Cinebench R23 multi-core. The data suggests the AMD chip remains a viable choice for users who prioritize a lower thermal envelope and a smaller physical footprint, as it uses a 4 nm process from TSMC against the Intel's 3 nm process from its own foundry. However, for outright compute performance across every measured category, the Intel Core Ultra X9 388H dominates.

The Intel chip's advantage is most pronounced in floating point and encryption workloads, where it leads by margins exceeding 50%. The AMD part maintains competitive ground only in integer math and multi-core rendering, where the gap narrows to single digits. Users who need strong single-threaded responsiveness will also favor the Intel part, as it leads the AMD by 8.9% in PassMark single-thread and 7.4% in Cinebench R23 single-core.

Where Each One Wins

The Intel Core Ultra X9 388H wins every category in the recorded data, but the magnitude of those wins varies considerably. In integer-heavy workloads, the margin is slim. The Intel chip scores 90882 against 88531 in PassMark integer math, a lead of only 2.6%. In Cinebench R23 multi-core, the Intel part scores 18911 against 18316, a 3.1% advantage. These are the closest contests in the dataset and indicate that for general productivity and code compilation, the two processors perform at a similar level.

The Intel part's largest victories come in specialized compute tasks. In PassMark find prime numbers, the Intel chip scores 358 against 89, a 75.1% lead. Floating point math shows a 51.6% advantage, with the Intel part scoring 112550 against 54447. Data encryption shows a 43% lead at 28490 against 16247. These results indicate the Intel architecture handles scientific computing, cryptography, and mathematically intensive workloads far better than the AMD chip.

The AMD Ryzen AI 7 450 does not win any of the 15 head-to-head tests. Its closest relative performance appears in Cinebench R23 multi-core at a 3.1% deficit, which suggests that for heavily threaded rendering tasks, the AMD 8-core design with 16 threads is nearly as effective as the Intel 16-core design with 16 threads. The AMD part also comes within 8.9% in PassMark single-thread, indicating acceptable single-core performance for everyday applications.

Architecture Differences

The two processors use fundamentally different design philosophies. The AMD Ryzen AI 7 450 uses the Zen 5 architecture on a 4 nm process from TSMC, with the codename Gorgon Point. It belongs to the Ryzen AI 400 generation, which combines Zen 5 and Zen 5c cores. The chip has 8 cores and 16 threads, with a base clock of 2.00 GHz and a boost clock of 5.10 GHz. Its thermal design power is 28 W, and it uses the AMD Socket FP8.

The Intel Core Ultra X9 388H uses the Panther Lake architecture on a 3 nm process from Intel's own foundry. It belongs to the Core Ultra Series 3 and the Ultra X9 generation, specifically Panther Lake-H. The chip has 16 cores and 16 threads, with a base clock of 2.10 GHz and a boost clock of 5.10 GHz. Its thermal design power is 25 W, lower than the AMD part despite having twice the cores, and it uses the Intel BGA 2540 socket.

Cache configurations differ substantially. The AMD chip provides 80 KB of L1 cache per core, 1 MB of L2 per core, and 8 MB of L3 cache. The Intel chip provides 192 KB of L1 per core, 3 MB of L2 per core, and 18 MB of shared L3 cache. The Intel part's larger cache hierarchy, especially the 18 MB shared L3, contributes to its advantage in data-heavy workloads like compression and encryption.

Memory support also differs. The AMD chip supports both DDR5 and LPDDR5X memory with dual-channel bus and 89.6 GB/s of bandwidth, and it supports ECC memory. The Intel chip supports only LPDDR5X with dual-channel bus but delivers 153.6 GB/s of bandwidth, a 72% higher figure. The Intel part does not support ECC memory. The AMD chip uses PCIe Gen 4 with 16 CPU lanes, while the Intel chip uses PCIe Gen 5 with 4 CPU lanes. Integrated graphics differ as well: the AMD part uses Radeon 860M, and the Intel part uses Arc B390. Both are mobile market segments with active production status, and both were released on the same date.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra X9 388H has 16 cores and 16 threads. The AMD Ryzen AI 7 450 has 8 cores and 16 threads. Both chips feature simultaneous multithreading, but the Intel part has twice the physical core count.

Q: How do the base and boost clocks compare?

A: The AMD Ryzen AI 7 450 has a base clock of 2.00 GHz and a boost clock of 5.10 GHz. The Intel Core Ultra X9 388H has a base clock of 2.10 GHz and a boost clock of 5.10 GHz. The boost clocks are identical, while the Intel part has a slightly higher base clock.

Q: What is the difference in memory bandwidth?

A: The Intel Core Ultra X9 388H has a memory bandwidth of 153.6 GB/s, while the AMD Ryzen AI 7 450 has 89.6 GB/s. The Intel part provides significantly higher bandwidth, which supports its performance in memory-intensive workloads.

Q: Do both processors support ECC memory?

A: No. The AMD Ryzen AI 7 450 supports ECC memory, while the Intel Core Ultra X9 388H does not.

Q: Which processor has the larger L3 cache?

A: The Intel Core Ultra X9 388H has 18 MB of shared L3 cache. The AMD Ryzen AI 7 450 has 8 MB of L3 cache. The Intel part also has larger L1 and L2 caches per core.

Q: What are the manufacturing process nodes?

A: The AMD Ryzen AI 7 450 is built on a 4 nm process by TSMC. The Intel Core Ultra X9 388H is built on a 3 nm process by Intel.

Head-to-Head Benchmarks

The Intel Core Ultra X9 388H wins all 15 head-to-head benchmarks in the database. The most decisive victory comes in PassMark find prime numbers, where the Intel chip scores 358 against the AMD's 89, a 75.1% lead. This test highlights the Intel part's commanding advantage in integer-heavy algorithmic workloads. Floating point math shows a similar pattern: the Intel chip scores 112550 against 54447, a 51.6% lead. Physics simulation follows at 3226 against 1578, a 51.1% margin. Data encryption shows a 43% advantage at 28490 against 16247.

The Intel part also leads decisively in Cinebench R15 single-core, scoring 309.5 against 215, a 30.5% margin. This is the largest single-threaded gap in the dataset. In extended instructions, the Intel chip scores 29943 against 22400, a 25.2% lead. Random string sorting shows a 19% advantage at 44010 against 35648. Data compression results in a 12.7% lead at 361763 against 315906. PassMark multi-thread shows a 28.4% advantage at 36811 against 26350.

The narrowest margins appear in integer math, where the Intel chip scores 90882 against 88531, a 2.6% lead. Cinebench R23 multi-core is close as well: 18911 against 18316, a 3.1% margin. Cinebench R23 single-core shows a 7.4% lead at 2200.5 against 2038. PassMark single-thread shows an 8.9% lead at 4280 against 3901. Cinebench R15 multi-core shows an 8.2% lead at 2955 against 2713. Even in its weakest categories, the Intel part maintains a lead, and in its strongest categories, it more than doubles the AMD chip's performance.

Specification Differences

The AMD Ryzen AI 7 450 and Intel Core Ultra X9 388H differ across nearly every major specification. The AMD part has 8 cores and 16 threads, while the Intel part has 16 cores and 16 threads. The AMD base clock is 2.00 GHz, the Intel base clock is 2.10 GHz. Both boost to 5.10 GHz. The AMD TDP is 28 W, the Intel TDP is 25 W. The AMD socket is AMD Socket FP8, the Intel socket is Intel BGA 2540.

The process nodes differ: AMD uses 4 nm from TSMC, Intel uses 3 nm from its own foundry. The AMD die size is 195 mm², while the Intel die size is not recorded in the database. Cache configurations diverge sharply. The AMD chip has 80 KB L1 per core, 1 MB L2 per core, and 8 MB L3. The Intel chip has 192 KB L1 per core, 3 MB L2 per core, and 18 MB shared L3.

Memory support differs as well. The AMD chip supports DDR5 and LPDDR5X with dual-channel bus and 89.6 GB/s bandwidth, plus ECC support. The Intel chip supports only LPDDR5X with dual-channel bus and 153.6 GB/s bandwidth, without ECC support. PCIe connectivity differs: the AMD chip uses Gen 4 with 16 CPU lanes, the Intel chip uses Gen 5 with 4 CPU lanes. Integrated graphics differ: the AMD part uses Radeon 860M, the Intel part uses Arc B390. Both are mobile parts, both are in active production, and both were released on the same date.