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

The Intel Core Ultra 9 285 and AMD Ryzen AI Max+ 395 sit remarkably close in aggregate performance: the Intel part averages 75400 across all benchmark scores, while the AMD part averages 75265, a delta of just 0.2%. Yet that near-tie in overall standing masks a sharp divergence in workload-specific behavior. The Intel chip wins 14 of 17 head-to-head comparisons, including every Cinebench test, while the AMD chip claims three decisive victories in integer-heavy and compression workloads. This is not a story of one clearly superior processor; it is a study in how architecture and memory design shape performance in very different directions.

Head-to-Head Benchmarks

The most lopsided wins belong to Intel in PassMark floating-point math: 194988 versus 123833, a 57.5% margin. The gap is even more extreme in prime-number finding, where Intel scores 459 against AMD's 298, a 54% advantage. Encryption also favors Intel heavily, 46949 versus 34086, a 37.7% lead. These are not marginal differences; they indicate fundamentally different execution strengths.

In single-threaded workloads, Intel is consistently ahead. PassMark single-thread shows 4881 versus 4123, an 18.4% advantage. Cinebench R23 single-core follows the same pattern: 6788 versus 6385, a 6.3% lead. That single-core edge carries over to multi-core rendering as well. Across all three Cinebench versions (R15, R20, R23), Intel wins multi-core by exactly 6.3%: R15 4847 vs 4558, R20 20196 vs 18995, R23 48087 vs 45228. PassMark multithread also goes to Intel, 56602 versus 53137, a 6.5% margin. Physics and random string sorting round out Intel's wins with smaller but still positive deltas: 4.4% (3598 vs 3448) and 1% (73651 vs 72894) respectively.

AMD's three wins are concentrated in areas where its architecture and memory subsystem excel. Data compression is a clear AMD victory: 656891 versus 602121, an 8.3% higher score. Extended instructions (SIMD-heavy code) sees AMD ahead by 14.4% (52958 vs 45357). Integer math is AMD's largest win at 15.5% (195223 vs 164869). These are not minor niches; they represent common server and scientific workloads.

The aggregate benchmark average puts Intel slightly ahead, but the nearestRivals data shows how close the overall picture is. Intel's average of 75400 is 0.2% above AMD's 75265. In the rival lists, each processor appears as the other's closest competitor, with deltas of -0.2% and +0.2% respectively. That near-tie is the backdrop for all the individual test results.

Where Each One Wins

The benchmark pattern splits cleanly along workload type. Intel dominates in tasks that rely on high clock speeds, strong single-thread performance, and floating-point throughput. Rendering (Cinebench), encryption, prime-number generation, physics simulation, and general multithreaded productivity all fall to Intel. The 5.60 GHz boost clock versus AMD's 5.10 GHz is a likely factor, as is Intel's 24-core configuration (even without simultaneous multithreading) versus AMD's 16 cores with 32 threads.

AMD's wins are in integer math, data compression, and extended instruction sets. These are workloads that benefit from AMD's larger shared L3 cache (64 MB versus 36 MB) and its quad-channel LPDDR5X memory, which delivers 256.0 GB/s of bandwidth—more than double Intel's 102.4 GB/s. The AMD chip also has a lower TDP (55 W vs 65 W) and is built on a 4 nm process versus Intel's 3 nm, yet still manages to outpace Intel in these specific areas.

For a desktop user, Intel's wins in Cinebench and single-thread tasks make it the obvious choice for content creation and everyday responsiveness. For a mobile or edge device where compression, integer processing, and memory bandwidth are critical, the AMD chip holds a distinct advantage. The fact that AMD is classified as a mobile processor while Intel is desktop-only further emphasizes the different intended use cases.

Architecture Differences

The two CPUs are built on different architectures with different design philosophies. Intel's Arrow Lake-S (codename Arrow Lake) uses a 3 nm TSMC process and packs 24 cores with 24 threads—no SMT. Each core has 192 KB of L1 and 3 MB of L2, with a shared 36 MB L3. The memory interface is dual-channel DDR5, providing 102.4 GB/s of bandwidth. PCIe is Gen 5 with 20 CPU lanes. The integrated graphics are Arc Xe-LPG with 64 execution units. The socket is Intel Socket 1851, and the TDP is 65 W.

AMD's Ryzen AI Max+ 395 (codename Strix Halo) uses a 4 nm TSMC process and has 16 cores with 32 threads thanks to SMT. Each core has 80 KB of L1 and 1 MB of L2, with a much larger shared 64 MB L3. Memory support is LPDDR5X over a quad-channel bus, yielding 256.0 GB/s—a massive bandwidth advantage. PCIe is Gen 4 with 16 CPU lanes. The integrated graphics are Radeon 8060S, and the socket is AMD Socket FP11, typical for mobile platforms. The TDP is 55 W, and the release date is January 5, 2025.

The differences in cache hierarchy are notable: Intel's per-core L1 and L2 are larger, while AMD's L3 is nearly double. The memory bandwidth gap is the most striking architectural differentiator—256 GB/s versus 102.4 GB/s—and likely explains AMD's wins in data compression and integer math, which can be memory-bound. Intel's higher boost clock (5.6 vs 5.1 GHz) and 3 nm process give it the edge in single-thread and floating-point tasks.

FAQ

Q: Which processor has higher single-thread performance?

A: The Intel Core Ultra 9 285, by a significant margin. PassMark single-thread shows 4881 versus 4123, an 18.4% lead. Cinebench R23 single-core also favors Intel: 6788 versus 6385, a 6.3% gap.

Q: How do they compare in multi-threaded rendering?

A: Intel wins every Cinebench multi-core test by 6.3%: R15 4847 vs 4558, R20 20196 vs 18995, R23 48087 vs 45228. PassMark multithread also goes to Intel, 56602 vs 53137, a 6.5% margin.

Q: Which is better for data compression?

A: AMD wins PassMark data compression decisively: 656891 versus 602121, an 8.3% higher score. This is one of AMD's three benchmark victories.

Q: What about memory bandwidth?

A: AMD has a clear advantage: 256.0 GB/s from quad-channel LPDDR5X versus Intel's 102.4 GB/s from dual-channel DDR5. That's more than double the bandwidth, which likely contributes to AMD's wins in compression and integer math.

Q: Are both CPUs ECC-capable?

A: Yes, both support ECC memory. The FACT PACK lists ECC memory as true for both the Intel and AMD parts.

Q: Which has a higher boost clock?

A: Intel, with a boost of 5.60 GHz versus AMD's 5.10 GHz. The base clocks differ too: Intel at 2.50 GHz and AMD at 3.00 GHz, but the boost is what matters for burst workloads.

The Verdict

The data points to a clear split. The Intel Core Ultra 9 285 is the stronger all-around desktop processor. It wins 14 of 17 head-to-head tests, leads in every Cinebench benchmark, and has a higher aggregate average score (75400 vs 75265). Its advantages in single-thread performance (18.4% in PassMark), floating-point math (57.5%), and encryption (37.7%) make it the choice for rendering, scientific computing, and general productivity. The 3 nm process and 5.6 GHz boost clock deliver tangible benefits.

The AMD Ryzen AI Max+ 395, however, is not a weak competitor. It wins in integer math (15.5%), data compression (8.3%), and extended instructions (14.4%). Its quad-channel LPDDR5X memory with 256.0 GB/s bandwidth is a major asset for memory-intensive workloads. As a mobile-class chip with a 55 W TDP, it offers exceptional performance per watt in specific tasks. For users whose workloads are dominated by compression, integer processing, or large data sets, the AMD part is the better fit—even though it loses the overall benchmark count.

Given the near-identical average scores, the decision should hinge on workload. If the priority is single-thread responsiveness, rendering, or floating-point tasks, the Intel Core Ultra 9 285 is the data-backed pick. If the priority is memory bandwidth, integer throughput, or compression, the AMD Ryzen AI Max+ 395 is the one to choose. The Intel part is a desktop chip; the AMD part is a mobile chip, so the platform also matters. In short, Intel wins the majority, but AMD wins where it counts for certain users.

Specification Differences

| Field | Intel Core Ultra 9 285 | AMD Ryzen AI Max+ 395 |

|-------|------------------------|------------------------|

| Cores | 24 | 16 |

| Threads | 24 | 32 |

| Base Clock | 2.50 GHz | 3.00 GHz |

| Boost Clock | 5.60 GHz | 5.10 GHz |

| TDP | 65 W | 55 W |

| Socket | Intel Socket 1851 | AMD Socket FP11 |

| Architecture | Arrow Lake | Zen 5 |

| Codename | Arrow Lake-S | Strix Halo |

| Process Node | 3 nm | 4 nm |

| Die Size | 243 mm² | 2x 70.6 mm² |

| L1 Cache (per core) | 192 KB | 80 KB |

| L2 Cache (per core) | 3 MB | 1 MB |

| L3 Cache (shared) | 36 MB | 64 MB |

| Memory Support | DDR5 | LPDDR5X |

| Memory Bus | Dual-channel | Quad-channel |

| Memory Bandwidth | 102.4 GB/s | 256.0 GB/s |

| PCIe | Gen 5, 20 Lanes (CPU only) | Gen 4, 16 Lanes (CPU only) |

| Integrated Graphics | Arc Xe-LPG Graphics 64EU | Radeon 8060S |

| Market Segment | Desktop | Mobile |

| Release Date | Not specified | 2025-01-05 |

| Launch MSRP | $579 | Not specified |

| Part Number | SRQD4 | 100-000001099 |

| Percentile vs All CPUs | 97th | 96th |