AMD Ryzen AI 7 450 vs Intel Core Ultra X9 378H Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive sweep. The Intel Core Ultra X9 378H wins all 15 head-to-head benchmark comparisons against the AMD Ryzen AI 7 450, with no wins recorded for the AMD part. The largest margins appear in single-core and floating-point workloads, where the Intel processor leads by more than half in several tests.

In Cinebench R23 single-core, the Intel Core Ultra X9 378H scores 4595 against the AMD Ryzen AI 7 450's 2038, a delta of -55.6% for the AMD chip. The Cinebench R15 single-core test shows a similar pattern: 462 versus 215, a -53.5% delta. These single-threaded results indicate a substantial per-core performance advantage for the Intel architecture.

Multi-core rendering follows the same direction. The Intel part scores 32553 in Cinebench R23 multi-core versus 18316 for the AMD processor, a -43.7% delta. In Cinebench R15 multi-core, Intel leads 3281 to 2713, a narrower -17.3% margin. The multi-core gap is still significant, but the single-core gap is proportionally larger, suggesting the Intel advantage is not solely dependent on core count.

PassMark integer math shows the closest contest. Intel scores 92603 against AMD's 88531, a delta of only -4.4%. This near-parity in integer throughput stands in contrast to the rest of the field. Floating-point math, however, is lopsided: Intel scores 114500 versus 54447, a -52.4% delta. Prime number finding shows the largest relative gap: Intel scores 357 against AMD's 89, a -75.1% delta.

Data compression and encryption also favor Intel. The compression test shows 386591 against 315906, a -18.3% delta. Encryption shows 29840 versus 16247, a -45.6% delta. Extended instructions follow: 31315 versus 22400, a -28.5% delta. Random string sorting shows 44648 versus 35648, a -20.2% delta.

Physics and multithreaded PassMark tests reinforce the pattern. Physics scores 3404 for Intel against 1578 for AMD, a -53.6% delta. PassMark multithread shows 38298 versus 26350, a -31.2% delta. Single-thread PassMark results are closer: 4453 versus 3901, a -12.4% delta.

The average benchmark score in the database places the Intel part at 47468 versus 39485 for the AMD part. The Intel processor sits at the 89th percentile against all CPUs, while the AMD processor sits at the 87th percentile. The nearest rival data confirms the positioning: the AMD Ryzen AI 7 450's closest competitor is the AMD Ryzen 7 PRO 8840HS with an average score of 39603 and a -0.3% delta, while the Intel Core Ultra X9 378H's nearest rival is the AMD Ryzen 9 PRO 5945 with an average score of 47527 and a -0.1% delta.

Architecture Differences

The two processors diverge fundamentally in their internal designs. The AMD Ryzen AI 7 450 uses a Zen 5 architecture on a 4 nm TSMC process node, with the codename Gorgon Point and a generation designation of Ryzen AI 400 (Zen 5 / Zen 5c). The Intel Core Ultra X9 378H uses a Panther Lake codename, a 3 nm Intel process node, and belongs to the Ultra X9 (Panther Lake-H) generation within the Core Ultra Series 3.

Core counts differ sharply. The AMD part has 8 cores and 16 threads, indicating simultaneous multithreading. The Intel part has 16 cores and 16 threads, meaning no multithreading across those cores. Despite having twice the core count, the Intel processor does not double the thread count, which affects how workloads scale.

Cache hierarchies also differ. The AMD processor has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 8 MB of L3 cache. The Intel processor has 192 KB of L1 cache per core, 2.5 MB of L2 cache per core, and 18 MB of shared L3 cache. The larger L3 cache on the Intel part provides more shared storage for frequently accessed data across all cores.

Memory support differs in scope. The AMD processor supports both DDR5 and LPDDR5X memory, while the Intel part supports only LPDDR5X. Both use dual-channel memory buses. Memory bandwidth is notably higher on the Intel part: 153.6 GB/s versus 89.6 GB/s for the AMD processor. The AMD processor supports ECC memory, while the Intel part does not.

PCIe connectivity shows a different trade-off. The AMD processor provides PCIe Gen 4 with 16 lanes (CPU only), while the Intel part provides PCIe Gen 5 with 4 lanes (CPU only). The AMD part offers more lanes but at an older generation; the Intel part offers fewer lanes at a newer generation.

Integrated graphics also differ. The AMD processor uses a Radeon 860M, while the Intel part uses an Arc B390. Both target mobile segments and are currently active in production. The AMD processor uses an AMD Socket FP8, while the Intel part uses an Intel BGA 2540.

Clock speeds are close. Both have a base clock of 2.00 GHz. The AMD boost clock reaches 5.10 GHz, slightly higher than the Intel boost clock at 5.00 GHz. Thermal design power is similar: 28 W for the AMD part versus 25 W for the Intel part. Neither processor has an unlocked multiplier.

Release dates differ by a few months. The AMD processor was released on 2026-01-04, while the Intel processor was released on 2026-04-03. The AMD part has a known part number (100-000001868), while the Intel part's part number is listed as unknown.

FAQ

Q: Which processor has a higher single-core Cinebench R23 score?

A: The Intel Core Ultra X9 378H scores 4595 in Cinebench R23 single-core, while the AMD Ryzen AI 7 450 scores 2038. The Intel part leads by a -55.6% delta for the AMD chip.

Q: How do the two processors compare in multi-core rendering?

A: In Cinebench R23 multi-core, the Intel Core Ultra X9 378H scores 32553 versus 18316 for the AMD Ryzen AI 7 450, a -43.7% delta. The Intel part also leads in Cinebench R15 multi-core with 3281 versus 2713, a -17.3% delta.

Q: What is the closest benchmark result between the two?

A: The PassMark integer math test shows the smallest gap. The Intel Core Ultra X9 378H scores 92603, while the AMD Ryzen AI 7 450 scores 88531, a delta of only -4.4%.

Q: Does the AMD processor have any advantages in memory support?

A: The AMD Ryzen AI 7 450 supports both DDR5 and LPDDR5X memory, while the Intel Core Ultra X9 378H supports only LPDDR5X. The AMD part also supports ECC memory, which the Intel part does not.

Q: How do the core counts and threads differ?

A: The AMD Ryzen AI 7 450 has 8 cores and 16 threads. The Intel Core Ultra X9 378H has 16 cores and 16 threads. The Intel part has more physical cores but does not use simultaneous multithreading.

Q: Which processor has a higher memory bandwidth?

A: The Intel Core Ultra X9 378H has a memory bandwidth of 153.6 GB/s, while the AMD Ryzen AI 7 450 has 89.6 GB/s. Both use dual-channel memory buses.

Specification Differences

The two processors differ in the following recorded specifications:

• Cores: AMD Ryzen AI 7 450 has 8 cores; Intel Core Ultra X9 378H has 16 cores
• Threads: AMD has 16 threads; Intel also has 16 threads
• Boost clock: AMD boosts to 5.10 GHz; Intel boosts to 5.00 GHz
• TDP: AMD rated at 28 W; Intel rated at 25 W
• Socket: AMD uses Socket FP8; Intel uses BGA 2540
• Architecture: AMD uses Zen 5; Intel lists no architecture field
• Codename: AMD uses Gorgon Point; Intel uses Panther Lake
• Generation: AMD uses Ryzen AI 400 (Zen 5 / Zen 5c); Intel uses Ultra X9 (Panther Lake-H)
• Process node: AMD uses 4 nm from TSMC; Intel uses 3 nm from Intel
• Die size: AMD lists 195 mm²; Intel lists none
• L1 cache: AMD has 80 KB per core; Intel has 192 KB per core
• L2 cache: AMD has 1 MB per core; Intel has 2.5 MB per core
• L3 cache: AMD has 8 MB; Intel has 18 MB shared
• Memory support: AMD supports DDR5 and LPDDR5X; Intel supports LPDDR5X only
• Memory bandwidth: AMD has 89.6 GB/s; Intel has 153.6 GB/s
• ECC memory: AMD supports it; Intel does not
• PCIe: AMD has Gen 4 with 16 lanes; Intel has Gen 5 with 4 lanes
• Integrated graphics: AMD uses Radeon 860M; Intel uses Arc B390
• Release date: AMD released 2026-01-04; Intel released 2026-04-03
• Part number: AMD lists 100-000001868; Intel lists unknown

Both processors share a base clock of 2.00 GHz, dual-channel memory buses, mobile market segments, active production status, and locked multipliers.

The Verdict

The benchmark data is unambiguous. The Intel Core Ultra X9 378H wins every single head-to-head comparison in the database, with 15 wins and zero for the AMD Ryzen AI 7 450. The average benchmark score of 47468 for the Intel part versus 39485 for the AMD part confirms the overall performance gap.

The largest deltas appear in single-core and floating-point workloads, where the Intel processor leads by over half. The smallest delta, at -4.4% in integer math, still favors Intel. No workload in the recorded data favors the AMD processor.

The AMD Ryzen AI 7 450 does offer advantages in platform flexibility: dual memory types, ECC support, more PCIe lanes, and a lower process node from TSMC. These are architectural features, not performance wins in the measured benchmarks.

For workloads measured by these tests, the Intel Core Ultra X9 378H is the stronger processor. The data supports this conclusion across rendering, math, compression, encryption, and physics workloads.

Where Each One Wins

The Intel Core Ultra X9 378H wins in every recorded benchmark category. The largest relative wins are in prime number finding (-75.1% delta), single-core Cinebench R23 (-55.6% delta), and floating-point math (-52.4% delta). These results indicate strength in single-threaded integer logic, per-core throughput, and FP-heavy calculations.

The Intel part also wins decisively in physics (-53.6% delta), single-core Cinebench R15 (-53.5% delta), and data encryption (-45.6% delta). Multi-core Cinebench R23 shows a -43.7% delta, and multithreaded PassMark shows -31.2%. These wins span both synthetic rendering and real-world data processing workloads.

The AMD Ryzen AI 7 450 has no benchmark wins in the recorded data. However, its closest margins are in integer math (-4.4% delta) and single-thread PassMark (-12.4% delta), suggesting that in integer-heavy, single-threaded tasks, the gap narrows considerably. The data does not show any workload where the AMD processor takes the lead.

The Intel part also leads in memory bandwidth at 153.6 GB/s versus 89.6 GB/s, which likely contributes to its wins in data compression and encryption. The AMD processor's advantages are purely platform-level: ECC support, DDR5 compatibility, and 16 PCIe Gen 4 lanes versus 4 PCIe Gen 5 lanes. These features do not translate into benchmark wins in the measured tests.