AMD Ryzen AI Max+ 392 vs Intel Core 5 120U Comparison

The Verdict

The AMD Ryzen AI Max+ 392 is the dominant processor in this comparison. It wins every single head-to-head benchmark recorded in the database, 11 wins to 0. Its average benchmark score of 90541 places it in the 96th percentile of all CPUs, while the Intel Core 5 120U sits in the 72nd percentile with an average score of 17898. The data shows a clear performance class separation: the Ryzen AI Max+ 392 competes with workstation-class parts like the Intel Xeon 654 (average score 90717, 0.2% behind) and the AMD Ryzen 9 9955HX (average score 91199, 0.7% behind), while the Core 5 120U sits in the same bracket as the AMD Ryzen 5 3600XT (average score 17891, 0% delta) and the Intel Core 5 221TE (average score 17860, 0.2% ahead).

The Intel Core 5 120U is a low-power mobile part with a 15 W TDP, designed for efficiency in thin-and-light laptops. The AMD Ryzen AI Max+ 392 is a 55 W mobile flagship with 12 cores and 24 threads, built on a 4 nm TSMC process. The benchmark results indicate that the Ryzen AI Max+ 392 is over 400% faster in some compute-heavy workloads, making it the clear choice for anyone who needs serious processing power in a laptop. The Core 5 120U remains viable for basic productivity and light workloads where battery life and low heat output matter more than raw performance.

Architecture Differences

The two processors come from different design philosophies. The AMD Ryzen AI Max+ 392 uses the Zen 5 architecture, codenamed Strix Halo, built on a 4 nm process at TSMC. The Intel Core 5 120U uses the Raptor Lake architecture, codenamed Raptor Lake-U, built on a 10 nm process at Intel. The AMD part features 12 cores and 24 threads, while the Intel part has 10 cores and 12 threads. Both have the same boost clock of 5.00 GHz, but the AMD base clock is 3.20 GHz versus 1.40 GHz for the Intel.

Cache configurations differ substantially. The AMD Ryzen AI Max+ 392 has 80 KB of L1 cache per core, 1 MB of L2 cache per core, and 64 MB of shared L3 cache. The Intel Core 5 120U has 80 KB of L1 cache per core, 1.25 MB of L2 cache per core, and only 12 MB of shared L3 cache. The AMD part's 64 MB L3 cache is five times larger than the Intel's 12 MB, which benefits workloads that repeatedly access large datasets.

Memory support also sets them apart. The AMD processor supports LPDDR5X memory with a quad-channel memory bus and a recorded memory bandwidth of 256.0 GB/s. It also supports ECC memory. The Intel part supports both DDR4 and DDR5, uses a dual-channel memory bus, and has no recorded memory bandwidth figure in the database. ECC memory is not supported on the Intel part. The AMD's quad-channel memory and much higher bandwidth directly contribute to its large leads in memory-intensive benchmarks.

The integrated graphics differ as well. The AMD Ryzen AI Max+ 392 pairs with the Radeon 8060S, while the Intel Core 5 120U uses the Iris Xe Graphics 80EU. PCIe connectivity also differs: the AMD offers Gen 4 with 16 lanes (CPU only), while the Intel offers Gen 4 with 8 lanes (CPU only). The AMD part is newer, with a release date of 2026-01-05, compared to the Intel's 2024-01-07. Both use different sockets: AMD Socket FP11 for the Ryzen AI Max+ 392 and Intel BGA 1744 for the Core 5 120U.

Head-to-Head Benchmarks

The database records 11 head-to-head benchmark comparisons, and the AMD Ryzen AI Max+ 392 wins all 11. The largest margin comes in the passmark_find_prime_numbers test, where the AMD scores 320 versus the Intel's 53, a delta of 503.8%. This test measures pure integer throughput in prime number generation, and the AMD's 12 cores with 24 threads and higher base clock produce a fivefold advantage.

The passmark_extended_instructions test shows the second-largest gap. The AMD scores 45666, while the Intel scores 9299, a delta of 391.1%. This benchmark covers specialized instruction set extensions, where the Zen 5 architecture's support for modern SIMD and crypto instructions gives it a massive edge over the older Raptor Lake design.

In passmark_data_compression, the AMD scores 554760 versus 166432, a 233.3% delta. This workload benefits from the AMD's large 64 MB L3 cache and high memory bandwidth. The passmark_random_string_sorting test shows a 212.1% delta (59487 versus 19060), again favoring the AMD's memory subsystem and core count.

The passmark_multithread score is 45231 for the AMD versus 15042 for the Intel, a 200.7% delta. This test scales with core count, and the AMD's 24 threads versus 12 threads explains much of the gap. The passmark_physics test shows a 208.1% delta (2887 versus 937), reflecting the AMD's stronger floating-point capabilities.

Integer math shows a 191.5% delta (152414 versus 52280), and floating-point math shows a 176.3% delta (99548 versus 36026). The passmark_data_encryption test shows a 165.8% delta (27784 versus 10453), indicating the AMD's AES and encryption throughput is significantly higher.

The narrowest margin is in single-thread performance. The passmark_single_thread score is 3927 for the AMD versus 3479 for the Intel, a 12.9% delta. Both processors boost to 5.00 GHz, but the Zen 5 architecture delivers better per-clock performance than Raptor Lake. This smaller gap suggests that for lightly-threaded tasks, the difference is noticeable but not overwhelming.

FAQ

Q: Which processor has a higher single-thread score?

A: The AMD Ryzen AI Max+ 392 scores 3927 in passmark_single_thread, which is 12.9% higher than the Intel Core 5 120U's score of 3479. Both have a 5.00 GHz boost clock, but the Zen 5 architecture provides better per-core efficiency.

Q: How large is the L3 cache difference?

A: The AMD Ryzen AI Max+ 392 has 64 MB of shared L3 cache, while the Intel Core 5 120U has 12 MB of shared L3 cache. This is a 52 MB difference, or roughly 5.3 times more L3 cache on the AMD part.

Q: Does the Intel Core 5 120U support ECC memory?

A: No, the Intel Core 5 120U does not support ECC memory. The AMD Ryzen AI Max+ 392 does support ECC memory, which is an important feature for workstation and server use cases.

Q: What is the memory bandwidth of each processor?

A: The AMD Ryzen AI Max+ 392 has a recorded memory bandwidth of 256.0 GB/s with a quad-channel LPDDR5X memory bus. The Intel Core 5 120U has no recorded memory bandwidth figure in the database, but it uses a dual-channel DDR4 or DDR5 memory bus.

Q: Which processor has more PCIe lanes?

A: The AMD Ryzen AI Max+ 392 offers Gen 4 with 16 lanes (CPU only), while the Intel Core 5 120U offers Gen 4 with 8 lanes (CPU only). The AMD part provides twice the PCIe lane count.

Q: What is the release date difference?

A: The AMD Ryzen AI Max+ 392 has a release date of 2026-01-05, and the Intel Core 5 120U has a release date of 2024-01-07. The AMD part is roughly two years newer.

Where Each One Wins

The AMD Ryzen AI Max+ 392 wins in every benchmark category recorded. Its largest advantages are in compute-intensive and memory-bound workloads. The 503.8% lead in prime number finding, 391.1% lead in extended instructions, and 233.3% lead in data compression indicate that this processor is suited for scientific computing, data analysis, encryption, and content creation. The 12 cores, 24 threads, 64 MB L3 cache, and 256.0 GB/s memory bandwidth make it a strong choice for heavy multitasking, virtualization, and any workload that scales with parallel execution.

The Intel Core 5 120U has no benchmark wins in the database. However, its characteristics suggest specific use cases where it would be preferred. Its 15 W TDP versus the AMD's 55 W TDP means it generates less heat and consumes less power, which is critical for fanless or ultraportable designs. The dual-channel DDR4 and DDR5 memory support offers flexibility in system integration. The 10 nm process from Intel, while older than the AMD's 4 nm TSMC process, is a mature node that can be manufactured at lower cost in high volume. The smaller 12 MB L3 cache and lower core count also mean a smaller die, which reduces production cost. The Core 5 120U is positioned for basic office work, web browsing, and media playback where the performance delta versus the AMD part is not needed.

For a laptop user who prioritizes battery life, low fan noise, and light weight, the Intel Core 5 120U is the rational choice. For anyone who needs maximum CPU throughput, large memory bandwidth, or ECC support, the AMD Ryzen AI Max+ 392 is the only viable option among these two. The data shows no scenario where the Intel part outperforms the AMD part in raw compute, so the decision rests entirely on power efficiency and system cost versus raw performance.

Specification Differences

The two processors differ in nearly every major specification. The AMD Ryzen AI Max+ 392 has 12 cores and 24 threads, while the Intel Core 5 120U has 10 cores and 12 threads. The AMD base clock is 3.20 GHz versus 1.40 GHz for the Intel, though both share a 5.00 GHz boost clock. The TDP differs significantly: 55 W for the AMD versus 15 W for the Intel.

The manufacturing process differs: the AMD uses 4 nm at TSMC, while the Intel uses 10 nm at its own foundry. Cache configurations diverge: the AMD has 80 KB L1 per core and 1 MB L2 per core, while the Intel has 80 KB L1 per core and 1.25 MB L2 per core. The L3 cache is 64 MB shared on the AMD versus 12 MB shared on the Intel.

Memory support differs: the AMD uses LPDDR5X with a quad-channel bus and 256.0 GB/s bandwidth, while the Intel uses DDR4 and DDR5 with a dual-channel bus and no recorded bandwidth. ECC memory is supported on the AMD but not on the Intel. PCIe connectivity differs: the AMD has Gen 4 with 16 lanes, the Intel has Gen 4 with 8 lanes.

The integrated graphics differ: the AMD uses Radeon 8060S, the Intel uses Iris Xe Graphics 80EU. The sockets differ: AMD Socket FP11 versus Intel BGA 1744. The release dates differ: 2026-01-05 for the AMD versus 2024-01-07 for the Intel. The part numbers are 100-000001979 for the AMD and SRM7P for the Intel. Neither processor has a recorded launch MSRP in the database, and neither has an unlocked multiplier.