AMD Ryzen AI Max+ 392 vs Intel Core Ultra 9 285 Comparison

The AMD Ryzen AI Max+ 392 and Intel Core Ultra 9 285 represent two different philosophies for high-performance computing, one targeting mobile efficiency with integrated graphics, the other targeting desktop throughput. The benchmark data shows a clear split: the Intel chip wins the vast majority of synthetic tests, while the AMD chip holds a narrow lead in one specific instruction test and offers a unique architectural feature set. The Core Ultra 9 285 secures 10 wins in the head-to-head comparison, with the Ryzen AI Max+ 392 taking only 1, but the nature of those wins and the platform differences define their respective use cases.

Where Each One Wins

The Intel Core Ultra 9 285 dominates across nearly every PassMark subtest, establishing itself as the stronger raw performer in most workloads. Its largest margins come in floating-point math, where it scores 194988 against 99548, a 48.9% advantage. It also leads heavily in data encryption (46949 vs 27784, a 40.8% gap), prime number finding (459 vs 320, a 30.3% gap), and single-thread performance (4881 vs 3927, a 19.5% gap). These results indicate a processor that excels at both general desktop tasks and compute-heavy applications, from scientific simulations to cryptographic operations.

The Ryzen AI Max+ 392 wins only the extended instructions test, scoring 45666 against 45357, a slim 0.7% margin. This is a narrow but real victory in a niche area, suggesting slightly better efficiency in specialized instruction sets. However, the AMD chip loses all other head-to-head matchups, including multithread (45231 vs 56602, a 20.1% deficit), physics (2887 vs 3598, a 19.8% deficit), and random string sorting (59487 vs 73651, a 19.2% deficit). The Intel part is the clear performance leader in the recorded data, but the AMD chip's win in extended instructions shows it is not without some strengths.

Architecture Differences

The two processors diverge fundamentally in their design targets. The AMD Ryzen AI Max+ 392 uses a mobile platform, built on the Zen 5 architecture with the Strix Halo codename, and fits into AMD Socket FP11. It features 12 cores and 24 threads, with a base clock of 3.20 GHz and a boost clock of 5.00 GHz. The chip is manufactured on a 4 nm process at TSMC, with a die size of 2x 70.6 mm². Its cache layout includes 80 KB of L1 per core, 1 MB of L2 per core, and 64 MB of shared L3. Memory support is LPDDR5X over a quad-channel bus, providing 256.0 GB/s of bandwidth. It also supports ECC memory and carries a Radeon 8060S integrated GPU.

The Intel Core Ultra 9 285 is a desktop part, using the Arrow Lake architecture with the Arrow Lake-S codename, socketed in Intel Socket 1851. It has 24 cores and 24 threads, with a base clock of 2.50 GHz and a boost clock of 5.60 GHz. The process node is 3 nm at TSMC, and the die size is 243 mm² with 17,800 million transistors. Cache sizes are larger per core: 192 KB of L1, 3 MB of L2, but the shared L3 is smaller at 36 MB. Memory support is DDR5 over a dual-channel bus, yielding 102.4 GB/s of bandwidth, less than half of the AMD part. ECC memory is supported, and the integrated graphics is Arc Xe-LPG Graphics 64EU. The Intel chip also uses PCIe Gen 5 with 20 lanes, while the AMD chip uses Gen 4 with 16 lanes.

These differences explain the performance gap. The Intel chip has twice the cores (24 vs 12) and a higher boost clock (5.60 vs 5.00 GHz), which drives its multithread and single-thread wins. The AMD chip compensates with a larger L3 cache (64 MB vs 36 MB) and much higher memory bandwidth (256.0 GB/s vs 102.4 GB/s), which supports its integrated graphics and data-heavy workloads, even if the CPU benchmarks do not reflect a general advantage.

Head-to-Head Benchmarks

The most decisive Intel win is in floating-point math, where the Core Ultra 9 285 scores 194988 versus 99548 for the Ryzen AI Max+ 392, a 48.9% lead. This is the largest delta in the entire comparison and indicates a substantial advantage for scientific and engineering applications that rely on floating-point calculations. Data encryption shows a similar story: Intel scores 46949 against 27784, a 40.8% lead, which points to faster cryptographic workloads and secure data handling.

Intel also wins multithread by a significant margin, scoring 56602 against 45231, a 20.1% difference. This aligns with its 24-core count versus the AMD chip's 12 cores, though both have 24 threads. The physics test follows the same pattern, with Intel at 3598 and AMD at 2887, a 19.8% gap. Single-thread performance favors Intel as well, with a score of 4881 versus 3927, a 19.5% lead, despite the AMD chip's higher base clock of 3.20 GHz versus 2.50 GHz. The Intel boost clock of 5.60 GHz evidently carries more weight in this metric.

Random string sorting goes to Intel, 73651 versus 59487, a 19.2% difference, and prime number finding favors Intel, 459 versus 320, a 30.3% lead. Data compression is closer, with Intel at 602121 and AMD at 554760, a 7.9% gap, while integer math shows Intel at 164869 versus 152414, a 7.6% lead. The only AMD win is extended instructions, 45666 versus 45357, a 0.7% margin. This single test suggests that in specific vector or specialized instruction workloads, the Zen 5 architecture can edge out Arrow Lake, but the effect is minimal in the broader picture.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra 9 285 has 24 cores, while the AMD Ryzen AI Max+ 392 has 12 cores. Both support 24 threads.

Q: What are the memory bandwidth differences?

A: The AMD Ryzen AI Max+ 392 uses quad-channel LPDDR5X with 256.0 GB/s of bandwidth. The Intel Core Ultra 9 285 uses dual-channel DDR5 with 102.4 GB/s of bandwidth.

Q: How do they compare in single-thread performance?

A: The Intel Core Ultra 9 285 scores 4881 in the PassMark single-thread test, while the AMD Ryzen AI Max+ 392 scores 3927, giving Intel a 19.5% lead.

Q: Which chip has a larger L3 cache?

A: The AMD Ryzen AI Max+ 392 has 64 MB of shared L3 cache, while the Intel Core Ultra 9 285 has 36 MB of shared L3 cache.

Q: What is the process node for each?

A: The AMD Ryzen AI Max+ 392 is built on a 4 nm process, and the Intel Core Ultra 9 285 is built on a 3 nm process, both at TSMC.

Q: Which processor supports ECC memory?

A: Both the AMD Ryzen AI Max+ 392 and the Intel Core Ultra 9 285 support ECC memory.

Specification Differences

The two processors differ in nearly every core specification. The AMD Ryzen AI Max+ 392 has 12 cores and 24 threads, while the Intel Core Ultra 9 285 has 24 cores and 24 threads. Base clocks are 3.20 GHz for AMD and 2.50 GHz for Intel, but boost clocks are 5.00 GHz for AMD and 5.60 GHz for Intel. The TDP is 55 watts for AMD and 65 watts for Intel. The AMD chip uses AMD Socket FP11, while Intel uses Socket 1851. Architecture is Zen 5 (Strix Halo) for AMD and Arrow Lake for Intel, with process nodes of 4 nm and 3 nm, respectively. The die size is 2x 70.6 mm² for AMD and 243 mm² for Intel, with Intel listing 17,800 million transistors.

Cache layouts are distinct: AMD has 80 KB L1 per core, 1 MB L2 per core, and 64 MB shared L3. Intel has 192 KB L1 per core, 3 MB L2 per core, and 36 MB shared L3. Memory support is LPDDR5X for AMD and DDR5 for Intel, with bus widths of quad-channel and dual-channel, yielding 256.0 GB/s and 102.4 GB/s of bandwidth. PCIe is Gen 4 with 16 lanes for AMD and Gen 5 with 20 lanes for Intel. Integrated graphics are Radeon 8060S for AMD and Arc Xe-LPG Graphics 64EU for Intel. The market segment is mobile for AMD and desktop for Intel. Release dates are 2026-01-05 for AMD and 2024-12-31 for Intel. The Intel chip has a launch MSRP of $579, while the AMD chip has none recorded.

The Verdict

The data points to the Intel Core Ultra 9 285 as the stronger CPU for raw compute performance. It wins 10 of 11 head-to-head benchmarks, with decisive leads in floating-point math, encryption, multithread, and single-thread tests. Its 24 cores and higher boost clock deliver measurable advantages across most workloads, making it the better choice for users who prioritize processing power above all else. The chip also benefits from a 3 nm process node, which contributes to its performance efficiency, and it holds a 95th percentile ranking versus all CPUs.

The AMD Ryzen AI Max+ 392, despite losing most benchmarks, has its own justification. Its 256.0 GB/s memory bandwidth, quad-channel LPDDR5X support, and larger 64 MB L3 cache make it a more capable platform for integrated graphics and memory-intensive tasks. Its 96th percentile ranking is slightly higher than Intel's 95th, and it wins the extended instructions test, showing a niche advantage. The mobile form factor and lower 55 watt TDP also indicate a design aimed at portable systems, where the Intel desktop chip cannot compete physically.

For a desktop builder seeking maximum benchmark scores, the Intel Core Ultra 9 285 is the clear choice based on the recorded data. For a mobile or compact system that needs both CPU and GPU capability without a discrete card, the AMD Ryzen AI Max+ 392 offers superior memory bandwidth and a competitive feature set, even if its CPU scores lag. The verdict depends on the platform: Intel for raw throughput, AMD for integrated graphics and bandwidth.