AMD Ryzen 9 7940HX vs Intel Core Ultra X7 358H Comparison

Head-to-Head Benchmarks

The recorded head-to-head data shows a decisive multi-threaded advantage for the AMD Ryzen 9 7940HX, which wins 8 of the 13 shared benchmark comparisons. The most extreme gap appears in PassMark integer math, where the AMD part scores 202,883 against 83,147 for the Intel Core Ultra X7 358H, a 144% lead. Data compression shows a similar pattern: 693,741 versus 332,508, a 108.6% advantage. Random string sorting follows with 81,775 against 40,357, a 102.6% difference. Extended instructions also favor AMD heavily at 51,029 versus 27,274, an 87.1% margin.

In Cinebench R23 multi-core, the AMD Ryzen 9 7940HX records 29,400 points, while the Intel part manages 18,747, a 56.8% gap. PassMark multithread confirms the trend: 53,204 versus 33,802, a 57.4% difference. Data encryption shows a 61.2% lead for AMD (41,974 versus 26,046), and floating-point math is closer but still AMD-favored at 121,383 versus 103,842, a 16.9% margin.

The Intel Core Ultra X7 358H wins the remaining five comparisons, and its victories are concentrated in single-thread and scalar workloads. Cinebench R23 single-core is its strongest result: 2,080 versus 1,807, a 13.1% advantage. PassMark find prime numbers shows a 19% lead (337 versus 273), and PassMark physics delivers a 24% margin (3,021 versus 2,297). In PassMark single-thread, the Intel part scores 4,124 versus 3,942, a 4.4% edge. The two single-thread entries in the database (passmark_single_thread and passmark_singlethread) both record identical values, confirming the same result.

The average benchmark score in the database places the AMD part at 69,875, ranking in the 94th percentile of all CPUs. The Intel part averages 40,967 and sits in the 87th percentile. The AMD chip's nearest rivals by average score are the AMD Ryzen 7 9700F (69,996, a 0.2% difference), Intel Core i7-14700KF (70,163, a 0.4% difference), AMD Ryzen 9 7950X (69,515, a 0.5% difference), and Intel Core i7-14700K (69,355, a 0.7% difference). The Intel chip's nearest rivals include the AMD Ryzen AI 5 PRO 440 (41,208, a 0.6% difference), Intel Core Ultra 7 356H (41,215, a 0.6% difference), AMD Ryzen AI 5 PRO 435G (40,718, a 0.6% difference), and Intel Core Ultra 7 366H (41,263, a 0.7% difference).

FAQ

Q: Which processor wins the majority of head-to-head benchmark comparisons?

A: The AMD Ryzen 9 7940HX wins 8 of the 13 recorded head-to-head tests, while the Intel Core Ultra X7 358H wins 5.

Q: What is the largest single benchmark gap between the two processors?

A: The largest gap is in PassMark integer math, where the AMD part leads by 144% (202,883 versus 83,147). The second-largest is data compression at 108.6% (693,741 versus 332,508).

Q: Where does the Intel Core Ultra X7 358H outperform the AMD Ryzen 9 7940HX?

A: The Intel part wins Cinebench R23 single-core by 13.1% (2,080 versus 1,807), PassMark find prime numbers by 19% (337 versus 273), PassMark physics by 24% (3,021 versus 2,297), and PassMark single-thread by 4.4% (4,124 versus 3,942).

Q: How do the two processors compare in multi-threaded performance?

A: The AMD part leads in Cinebench R23 multi-core by 56.8% (29,400 versus 18,747) and in PassMark multithread by 57.4% (53,204 versus 33,802). Its wins in integer math, data compression, and random string sorting further confirm a strong multi-thread advantage.

Q: What is the overall performance percentile for each processor?

A: The AMD Ryzen 9 7940HX ranks in the 94th percentile of all CPUs, while the Intel Core Ultra X7 358H ranks in the 87th percentile.

Q: How close are the two processors to their nearest rivals in average score?

A: The AMD part's closest rival is the AMD Ryzen 7 9700F with an average score of 69,996, a 0.2% difference. The Intel part's closest rival is the AMD Ryzen AI 5 PRO 435G at 40,718, also a 0.6% difference.

Architecture Differences

The AMD Ryzen 9 7940HX uses the Zen 4 architecture under the Dragon Range codename, belonging to the 7000 series and the Ryzen 9 generation. It is built on a 5 nm process at TSMC, with 13,140 million transistors across a dual-chip die size of 2x 71 mm². The Intel Core Ultra X7 358H relies on the Panther Lake codename and belongs to the Core Ultra Series 3, with the generation listed as Ultra X7 (Panther Lake-H). It uses a 3 nm process at Intel's own foundry; the database does not list transistor count or die size for this part.

Cache organization differs substantially. The AMD chip provides 64 KB of L1 per core, 1 MB of L2 per core, and 64 MB of L3. The Intel chip provides 192 KB of L1 per core, 3 MB of L2 per core, and 18 MB of shared L3. This means the Intel part has larger per-core L1 and L2 caches, while the AMD part carries a much larger L3 pool.

The AMD processor supports DDR5 memory on a dual-channel bus with 83.2 GB/s of bandwidth. The Intel processor supports LPDDR5X on a dual-channel bus with 153.6 GB/s of bandwidth. Both support PCIe Gen 5, but the lane counts differ sharply: the AMD part provides 28 CPU lanes, while the Intel part provides only 4 CPU lanes.

Integrated graphics also differ. The AMD chip uses a Radeon 610M, while the Intel chip uses an Arc B390. Neither processor supports ECC memory. The AMD processor has an unlocked multiplier, while the Intel processor is locked. The AMD part carries part number 100-000001486 and uses AMD Socket FL1; the Intel part carries part number SA4RAQ9ET and uses Intel BGA 2540.

Specification Differences

The two processors share the same core count of 16, but thread counts diverge: the AMD Ryzen 9 7940HX supports 32 threads, while the Intel Core Ultra X7 358H supports 16 threads. Base clocks are 2.40 GHz for AMD and 1.90 GHz for Intel. Boost clocks are 5.20 GHz for AMD and 4.80 GHz for Intel. Thermal design power differs by a wide margin: 55 W for AMD versus 25 W for Intel.

The AMD chip's architecture is listed as Zen 4, while the Intel chip's architecture field is null in the database. Codename, generation, process node, foundry, and release dates all differ. The AMD part released on 2024-01-16, while the Intel part released on 2026-01-04. The AMD part's cache totals are 64 MB of L3, whereas the Intel part has 18 MB of shared L3. Per-core L1 and L2 values also differ as described above.

Memory support, bandwidth, PCIe lane count, integrated GPU, socket, multiplier lock state, and part number all differ between the two parts. No launch MSRP is listed for either processor. The production status is Active for both.

The Verdict

The recorded data shows two processors with distinct strengths. The AMD Ryzen 9 7940HX is the clear choice for workloads that scale with threads: Cinebench R23 multi-core, PassMark multithread, integer math, data compression, random string sorting, encryption, extended instructions, and floating-point math all favor AMD by margins ranging from 16.9% to 144%. Its 32 threads and 64 MB of L3 cache align with these results. Its 94th percentile ranking among all CPUs, with an average score of 69,875, places it in the company of desktop-class parts like the AMD Ryzen 9 7950X and Intel Core i7-14700K, which sit within 0.7% of its average score.

The Intel Core Ultra X7 358H delivers a different profile. It wins single-thread tests, physics, and prime-number finding, with its strongest lead being 24% in PassMark physics and 13.1% in Cinebench R23 single-core. Its larger per-core L2 cache and higher single-core score suggest a design tuned for latency-sensitive, lightly threaded tasks. Its 87th percentile ranking and average score of 40,967 place it near the AMD Ryzen AI 5 PRO 440 and Intel Core Ultra 7 356H, both within 0.6% of its score.

The data indicates that the AMD part is superior for heavily parallel rendering, encoding, and data-heavy workloads, while the Intel part is superior for single-threaded responsiveness and physics-based calculations. The AMD chip's much higher power envelope of 55 W versus 25 W, along with its higher boost clock of 5.20 GHz versus 4.80 GHz, aligns with its larger multi-thread lead. The Intel part's higher memory bandwidth of 153.6 GB/s versus 83.2 GB/s does not translate into wins in the memory-sensitive tests recorded here, as AMD dominates data compression and random string sorting.

For users selecting between these two mobile processors, the decision rests on workload type. Multi-threaded throughput points firmly to the AMD Ryzen 9 7940HX. Single-thread and physics performance points to the Intel Core Ultra X7 358H. The benchmark database provides no evidence that the Intel part can close the multi-thread gap, and the AMD part cannot match the Intel part's single-thread or physics results. Each processor wins in its intended domain, and the 8 to 5 win split reflects that specialization rather than an overall victor.