AMD Ryzen AI Max+ 395 vs Intel Core Ultra 9 285K Comparison

The Intel Core Ultra 9 285K and AMD Ryzen AI Max+ 395 represent two very different philosophies in high-end computing: one is a desktop flagship with a traditional socket, the other a mobile part with a massive integrated GPU. The benchmark data from the database shows a clear overall winner, but the single AMD victory reveals a distinct area of strength. This analysis breaks down where each processor excels, based strictly on recorded measurements.

Head-to-Head Benchmarks

The Intel Core Ultra 9 285K dominates the head-to-head comparison, winning 16 out of 17 recorded benchmarks. The largest margin comes in passmark floating point math, where Intel scores 224,324 against AMD's 128,682, a 74.3% advantage. This suggests a significant edge in workloads that rely heavily on vectorized floating-point operations, which are common in scientific computing and certain rendering tasks.

Another massive win for Intel is in passmark find prime numbers, a test that stresses integer throughput and branch prediction. Here the 285K scores 541 versus 303 for the Ryzen AI Max+ 395, a 78.5% difference. This is the largest percentage gap in the entire comparison, indicating that the Intel part handles this specific type of tightly looped integer workload far more efficiently.

Data encryption is another area of clear Intel superiority. The 285K posts 57,745 in passmark data encryption, while the AMD chip manages only 35,455, a 62.9% lead. This could translate to faster disk encryption and VPN throughput in real-world use. Similarly, passmark multithread shows a 22.4% advantage for Intel (67,260 vs. 54,934), reinforcing its strength in heavily threaded general-purpose tasks.

Cinebench results follow the same pattern. In Cinebench R23 multicore, the Intel chip scores 42,522 against 35,314 for AMD, a 20.4% lead. The single-core test shows a 16.3% gap (2,377 vs. 2,044). Geekbench multicore gives Intel a 27.2% edge (26,702 vs. 20,992), and single-core a 16.5% advantage (2,870 vs. 2,464). These consistent single-thread wins indicate that the 285K has higher per-core performance, which matters for responsiveness and lightly threaded applications.

The only benchmark where AMD wins is passmark integer math. Here the Ryzen AI Max+ 395 scores 200,665 versus 172,379 for Intel, a 14.1% advantage. This is a notable outlier, suggesting that the Zen 5 architecture has a particular strength in pure integer arithmetic, which can benefit tasks like database operations, compression algorithms, and certain types of financial modeling.

Other Intel wins include passmark data compression (790,052 vs. 690,650, a 14.4% lead), passmark extended instructions (62,277 vs. 56,346, a 10.5% lead), passmark physics (3,938 vs. 3,481, a 13.1% lead), and passmark random string sorting (94,927 vs. 76,177, a 24.6% lead). The Cinebench R15 tests also go to Intel, with an 18.9% multicore win (6,494 vs. 5,463) and a 13.6% single-core win (359 vs. 316).

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core Ultra 9 285K has an average benchmark score of 83,807, while the AMD Ryzen AI Max+ 395 scores 77,740. This places the Intel part in the 96th percentile of all CPUs, compared to the 95th percentile for AMD.

Q: How does the Intel Core Ultra 9 285K compare to its closest rivals?

A: The database shows it is 0.2% behind the Intel Core Ultra 9 290K Plus, 0.9% ahead of the AMD EPYC 4584PX, 1% ahead of the AMD EPYC 9135, and 1.5% behind the AMD EPYC 7F72. These are all within a narrow band, indicating the 285K is tightly competitive with top-tier server and desktop parts.

Q: What is the single biggest performance gap in the head-to-head tests?

A: The largest percentage difference is in passmark find prime numbers, where the Intel Core Ultra 9 285K leads by 78.5%. The second largest is in passmark floating point math, with a 74.3% advantage for Intel.

Q: Is the AMD Ryzen AI Max+ 395 competitive in any workload?

A: Yes, it wins in passmark integer math with a score of 200,665, which is 14.1% higher than the Intel chip's 172,379. This is the only benchmark where AMD takes the lead.

Q: How do the single-threaded scores compare?

A: Intel wins in every single-thread test. In Cinebench R23 single-core, it scores 2,377 vs. 2,044 for AMD (16.3% lead). In Geekbench single-core, it scores 2,870 vs. 2,464 (16.5% lead). In passmark single thread, it scores 5,087 vs. 4,147 (22.7% lead).

Q: What does the 96th percentile ranking for Intel mean?

A: It means the Core Ultra 9 285K outperforms 96% of all CPUs in the database. The AMD Ryzen AI Max+ 395, at the 95th percentile, is also a top-tier performer, but it sits just below the Intel part in overall standing.

Architecture Differences

The two processors are built on different architectures and process nodes. The Intel Core Ultra 9 285K uses the Arrow Lake architecture, specifically Arrow Lake-S, and is fabricated on a 3 nm process by TSMC. The AMD Ryzen AI Max+ 395 uses Zen 5, codenamed Strix Halo, on a 4 nm process, also by TSMC. This node difference likely contributes to the Intel chip's higher clock speeds and per-core performance.

The core configurations are fundamentally different. Intel uses 24 cores and 24 threads, while AMD uses 16 cores and 32 threads. This means the AMD chip has simultaneous multithreading, doubling its thread count, while the Intel part operates with one thread per core. Despite having fewer physical cores, the AMD chip's 32 threads compete well in some multithreaded workloads, though it still loses to Intel in most of them.

Cache hierarchies also differ. The Intel chip has 192 KB of L1 cache per core, 3 MB of L2 cache per core, and 36 MB of shared L3 cache. The AMD chip has 80 KB of L1 per core, 1 MB of L2 per core, and a larger 64 MB of shared L3 cache. The larger L3 on the AMD part could help with certain data-heavy workloads, but the benchmark results suggest that Intel's cache arrangement, combined with higher clocks, is more effective overall.

The die sizes are notably different. Intel's chip has a die size of 243 mm², while the AMD chip uses two dies, each 70.6 mm², for a combined area of 141.2 mm². Intel also lists a transistor count of 17,800 million, while AMD does not provide a comparable figure in the database. The memory interfaces differ as well: Intel supports DDR5 with a dual-channel bus and 102.4 GB/s bandwidth, while AMD uses LPDDR5X with a quad-channel bus and 256.0 GB/s bandwidth. The AMD chip's double bandwidth is a significant architectural advantage, though it does not translate into benchmark wins in the recorded tests.

The integrated graphics are also different. Intel has Arc Xe-LPG Graphics with 64 execution units, while AMD has Radeon 8060S. The database does not include graphics benchmarks, so this cannot be compared directly, but the AMD part's mobile segment suggests a focus on integrated GPU performance.

Specification Differences

The two processors differ in several key specifications. The Intel Core Ultra 9 285K has a base clock of 3.70 GHz and a boost clock of 5.70 GHz, while the AMD Ryzen AI Max+ 395 has a base clock of 3.00 GHz and a boost clock of 5.10 GHz. Intel runs at a 125 W TDP, whereas AMD is rated at 55 W, reflecting its mobile design.

The sockets are incompatible: Intel uses Socket 1851, while AMD uses Socket FP11. The Intel part supports PCIe Gen 5 with 20 lanes (CPU only), while the AMD chip supports PCIe Gen 4 with 16 lanes (CPU only). Intel's multiplier is unlocked, allowing overclocking, while AMD's is locked.

The Intel chip has a launch MSRP of $589. The AMD part has no launch MSRP recorded in the database. The Intel part was released on October 23, 2024, while the AMD chip was released on January 5, 2025. Intel lists a part number of SRQD5, while AMD lists 100-000001099.

The market segments differ: Intel is a desktop part, while AMD is a mobile part. Both support ECC memory, which is a point of similarity. Intel supports DDR5 memory, while AMD supports LPDDR5X. Intel's memory bus is dual-channel, while AMD's is quad-channel, giving AMD a theoretical bandwidth advantage.

The Verdict

The data is unambiguous: the Intel Core Ultra 9 285K is the faster processor in nearly every recorded benchmark. It wins 16 of 17 head-to-head tests, has a higher average benchmark score (83,807 vs. 77,740), and sits at a higher percentile (96th vs. 95th). The margins are not trivial. In floating point math, Intel leads by 74.3%. In prime number finding, it leads by 78.5%. In data encryption, it leads by 62.9%. These are substantial gaps that would be noticeable in any workload that relies on these operations.

However, the AMD Ryzen AI Max+ 395 is not without merit. Its 14.1% win in integer math is a real strength, and its 55 W TDP suggests it achieves this performance at significantly lower power draw, though the database does not include power measurements. The AMD chip also has a larger L3 cache (64 MB vs. 36 MB) and double the memory bandwidth (256.0 GB/s vs. 102.4 GB/s), which could be advantages in specific scenarios not captured by the benchmark suite.

For a desktop builder who wants maximum performance across a wide range of tasks, the Intel Core Ultra 9 285K is the clear choice based on the data. Its single-thread dominance and multicore leads in Cinebench and Geekbench make it versatile. For a mobile user who needs a processor with strong integer performance and a lower TDP, the AMD Ryzen AI Max+ 395 is the only option, as the Intel part is desktop-only.

Where Each One Wins

The Intel Core Ultra 9 285K wins in 16 distinct benchmark categories. These include all Cinebench tests, all Geekbench tests, and most Passmark tests. Specifically, it wins in data compression (14.4% lead), data encryption (62.9% lead), extended instructions (10.5% lead), find prime numbers (78.5% lead), floating point math (74.3% lead), multithread (22.4% lead), physics (13.1% lead), random string sorting (24.6% lead), and single thread (22.7% lead). This makes it the better choice for general computing, single-threaded applications, floating-point-heavy workloads such as scientific simulations, and tasks requiring strong encryption performance.

The AMD Ryzen AI Max+ 395 wins in exactly one benchmark: passmark integer math, with a 14.1% advantage. This suggests it is the better choice for workloads that are heavily dependent on integer arithmetic, such as certain database operations, file compression, and some types of financial calculations. The AMD chip also has architectural advantages in memory bandwidth (256.0 GB/s vs. 102.4 GB/s) and L3 cache size (64 MB vs. 36 MB), which the benchmark suite may not fully reflect. For users who prioritize integer math and require a mobile form factor with a 55 W TDP, the Ryzen AI Max+ 395 has a clear niche. For everyone else, the Intel Core Ultra 9 285K is the superior performer.