AMD Ryzen 5 7400 vs Intel Core Ultra X9 388H Comparison

Where Each One Wins

The recorded benchmark data presents a clear, one-sided picture: the Intel Core Ultra X9 388H wins every single head-to-head test in the database, 11 wins to 0 for the AMD Ryzen 5 7400. This does not mean the AMD part has no role, but the division of labor is not based on benchmark victories. Instead, the use-case split comes from the platform and market positioning of each processor.

The AMD Ryzen 5 7400 is a desktop processor on AMD Socket AM5, built around the Zen 4 architecture with 6 cores and 12 threads. Its market segment is Desktop, and it has an unlocked multiplier, making it a candidate for systems where the user expects to adjust clock behavior. It also supports ECC memory, which the Intel part does not. That ECC support, combined with the desktop socket and the 24 PCIe Gen 5 lanes available from the CPU, positions the AMD chip for workstation-adjacent builds where memory integrity and expansion capacity matter more than raw multi-threaded throughput.

The Intel Core Ultra X9 388H is a mobile processor, soldered via Intel BGA 2540, with a 25 watt TDP. It belongs to the Panther Lake-H generation and targets the Mobile market segment. Its 16 cores and 16 threads (no hyperthreading) deliver substantially higher multi-threaded scores across the board. The Intel part also has a much higher boost clock of 5.10 GHz versus 4.30 GHz, and its memory bandwidth is nearly double at 153.6 GB/s versus 83.2 GB/s. For workloads that are bandwidth-hungry or heavily parallel, the Intel chip is the clear choice based on the data.

The AMD part wins only in the sense that it fits a different physical and electrical envelope: a socketed desktop CPU with a 65 watt TDP, an integrated Radeon Graphics solution, and ECC support. The Intel part is a low-power mobile BGA chip with integrated Arc B390 graphics. So the use-case split is not about performance wins; it is about desktop versus mobile, socketed versus soldered, and ECC versus non-ECC memory.

Architecture Differences

The two processors come from different architectural lineages and manufacturing processes. The AMD Ryzen 5 7400 uses Zen 4 architecture, codename Raphael, fabricated by TSMC on a 5 nm process. The die size is 71 mm² with 6,570 million transistors. The Intel Core Ultra X9 388H uses Panther Lake architecture, fabricated by Intel on a 3 nm process, though the database does not record a die size or transistor count for it.

Core and thread counts differ significantly: the AMD part has 6 cores and 12 threads, while the Intel part has 16 cores and 16 threads. The Intel part does not use simultaneous multithreading, so its 16 threads equal its 16 cores. The AMD part relies on 6 physical cores with 12 threads via SMT.

Cache hierarchies are structured differently. The AMD part has 64 KB of L1 per core, 1 MB of L2 per core, and 16 MB of shared L3. The Intel part has 192 KB of L1 per core, 3 MB of L2 per core, and 18 MB of shared L3. The Intel L3 is slightly larger in total, and its per-core L2 is three times larger, which likely contributes to its strong single-thread and multi-thread results.

Clock speeds also diverge: the AMD base clock is 3.30 GHz with a boost of 4.30 GHz, while the Intel base is 2.10 GHz with a boost of 5.10 GHz. The Intel part boosts significantly higher, but its base clock is much lower, reflecting a mobile power envelope with a 25 watt TDP versus 65 watts for the AMD desktop part.

Memory support differs: the AMD part uses DDR5 with dual-channel memory and 83.2 GB/s bandwidth, plus ECC support. The Intel part uses LPDDR5X with dual-channel memory and 153.6 GB/s bandwidth, but no ECC. The Intel memory bandwidth advantage is large, which shows up in data-heavy workloads.

PCIe connectivity also differs. The AMD part provides 24 PCIe Gen 5 lanes from the CPU, while the Intel part provides only 4 PCIe Gen 5 lanes from the CPU, which is typical for a mobile BGA part. Integrated graphics differ as well: the AMD part uses Radeon Graphics, while the Intel part uses Arc B390.

The AMD part has an unlocked multiplier, the Intel part is locked. The AMD part is marked Active in production status, as is the Intel part. The Intel part has a later release date in the database: 2026-01-04 versus 2025-09-15 for the AMD part.

Head-to-Head Benchmarks

The database records 11 head-to-head benchmark comparisons, all of which the Intel Core Ultra X9 388H wins. The largest margin is in the find prime numbers test, where the Intel part scores 358 versus 79, a delta of -77.9% from the AMD perspective. That is a massive gap, nearly a 4.5x advantage in that specific workload.

Floating point math shows a similar pattern: Intel scores 112550 versus 40784, a delta of -63.8%. Physics also heavily favors Intel: 3226 versus 1150, a delta of -64.4%. Data encryption favors Intel at 28490 versus 14865, a delta of -47.8%. The multithread test shows Intel at 36811 versus 21712, a delta of -41%. Extended instructions favor Intel at 29943 versus 19924, a delta of -33.5%. Random string sorting favors Intel at 44010 versus 31110, a delta of -29.3%. Integer math favors Intel at 90882 versus 64733, a delta of -28.8%. Data compression favors Intel at 361763 versus 261749, a delta of -27.6%. Single-thread tests show Intel at 4280 versus 3248, a delta of -24.1%, recorded twice as passmark_single_thread and passmark_singlethread with identical values.

The closest margin is the single-thread test at -24.1%, but even that is a decisive Intel advantage. The smallest percentage gap in the dataset is data compression at -27.6%, which is still a substantial lead. The Intel part does not merely win; it wins by wide margins in every measured category, with the prime number test being the most extreme outlier.

On the average benchmark score front, the Intel part records 44466 versus 42055 for the AMD part. The Intel part sits at the 88th percentile of all CPUs, and the AMD part also sits at the 88th percentile. The nearest rivals for the AMD part include the AMD Ryzen 9 PRO 8945HS at 41963 (delta 0.2%), the Intel Core i7-14700T at 41914 (delta 0.3%), the Intel Core i7-12850HX at 41779 (delta 0.7%), and the Intel Core i9-12900K at 42335 (delta -0.7%). The nearest rivals for the Intel part include the AMD Ryzen 5 7500X3D at 44573 (delta -0.2%), the Intel Core i9-13950HX at 44342 (delta 0.3%), the AMD Ryzen AI Max 385 at 44309 (delta 0.4%), and the Intel Core i5-13600 at 44240 (delta 0.5%). These rival comparisons show that both parts are competitive within their respective brackets, but the Intel part sits at a higher average score.

The Verdict

The data dictates a straightforward conclusion: the Intel Core Ultra X9 388H is the faster processor in every benchmark recorded in the database. Its 16 cores, higher boost clock, larger cache per core, and doubled memory bandwidth give it an overwhelming advantage across integer math, floating point, encryption, compression, physics, and single-threaded tasks. The AMD Ryzen 5 7400 cannot match it on any measured performance metric.

However, the choice between these two is not purely a performance comparison. The AMD part is a socketed desktop CPU with an unlocked multiplier, ECC memory support, and 24 PCIe Gen 5 lanes. It belongs to a desktop platform where users can upgrade, overclock, and use error-correcting memory. The Intel part is a soldered mobile BGA chip with a 25 watt TDP, no ECC, and only 4 PCIe Gen 5 lanes. It is designed for a sealed mobile system, not a build-your-own desktop.

So the verdict is conditional on the platform. For a desktop system where ECC memory, a socketed CPU, and high PCIe lane count are requirements, the AMD Ryzen 5 7400 is the only viable option in this comparison, despite its lower benchmark scores. For a mobile system where raw performance per watt and maximum multi-threaded throughput are the priorities, the Intel Core Ultra X9 388H is the clear winner. The data does not support any scenario where the AMD part wins on raw speed, but it does support a scenario where the AMD part wins on platform features.

The average benchmark score difference is 44466 versus 42055, about a 5.7% gap in favor of Intel. That is not a small margin, but it is also not as large as the individual workload deltas, which range from -24.1% to -77.9%. The Intel part is particularly dominant in prime number finding, physics, and floating point, which suggests its architecture and memory bandwidth are especially well-suited to those workloads.

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 5 7400 has 6 cores and 12 threads.

Q: What is the single-thread performance difference?

A: The Intel part scores 4280 in the passmark single-thread test, while the AMD part scores 3248, a delta of -24.1% in favor of Intel.

Q: Does the AMD Ryzen 5 7400 support ECC memory?

A: Yes, the AMD part has ECC memory support. The Intel Core Ultra X9 388H does not support ECC memory.

Q: What is the memory bandwidth for each processor?

A: The AMD part has 83.2 GB/s of memory bandwidth with DDR5 support. The Intel part has 153.6 GB/s with LPDDR5X support.

Q: Which processor has a higher boost clock?

A: The Intel Core Ultra X9 388H boosts to 5.10 GHz, while the AMD Ryzen 5 7400 boosts to 4.30 GHz.

Q: Which part is unlocked for overclocking?

A: The AMD Ryzen 5 7400 has an unlocked multiplier. The Intel Core Ultra X9 388H is locked.

Q: How many PCIe Gen 5 lanes does each CPU provide?

A: The AMD part provides 24 PCIe Gen 5 lanes from the CPU. The Intel part provides 4 PCIe Gen 5 lanes from the CPU.