AMD Ryzen AI 5 340 vs Intel Core Ultra 9 285 Comparison

The AMD Ryzen AI 5 340 and Intel Core Ultra 9 285 occupy different corners of the processor market, and the benchmark data reflects a complete sweep for the Intel part. Across every recorded test, the Core Ultra 9 285 posts a higher score. The most decisive margin appears in Cinebench R23 multi-core, where Intel scores 48945 against AMD's 12532, a delta of -74.4% for the Ryzen chip. This pattern repeats in PassMark integer math, where the Intel part scores 164869 versus 63078, a -61.7% difference. The Intel processor also leads in floating-point math by a wide margin, scoring 194988 against 39967, a -79.5% gap.

Single-threaded performance tells a similar story, though the gap is narrower. In PassMark single-thread, the Core Ultra 9 285 scores 4881 while the Ryzen AI 5 340 scores 3683, a -24.5% delta. The Cinebench R23 single-core result shows Intel at 6909 and AMD at 1915.5, a -72.3% difference. The data shows a consistent advantage for the Intel processor in both lightly threaded and heavily threaded workloads.

Head-to-Head Benchmarks

The Intel Core Ultra 9 285 wins all 15 head-to-head benchmark comparisons in the database. The largest single delta is in PassMark find prime numbers, where Intel scores 459 against AMD's 72, a -84.3% difference. That workload depends heavily on integer throughput and clock speed, and the Intel part's advantage is substantial.

Cinebench R15 multi-core shows Intel at 4933 versus AMD at 1915, a -61.2% delta. The single-core variant shows Intel at 696 versus 242.6, a -65.1% delta. These results indicate that the Core Ultra 9 285 delivers roughly two and a half to three times the throughput in these rendering benchmarks.

PassMark data compression shows Intel at 602121 versus AMD at 229796, a -61.8% delta. Data encryption shows Intel at 46949 versus 11470, a -75.6% delta. Extended instructions show Intel at 45357 versus 16440, a -63.8% delta. The Intel part leads in every PassMark subtest, including physics (3598 versus 1095, -69.6%), random string sorting (73651 versus 24970, -66.1%), and multi-thread (56602 versus 19506, -65.5%).

The smallest relative deficit for the AMD processor is in PassMark single-thread, where the delta is -24.5%. Even there, Intel maintains a clear lead. The average benchmark score for the Intel part is 75488, placing it in the 95th percentile of all CPUs in the database. The AMD part averages 25981, placing it in the 78th percentile. The nearest rival to the AMD chip is the Intel Core i7-14701TE with an average score of 26013, a -0.1% delta, which means the Ryzen AI 5 340 sits in a competitive range for mid-range processors. The Core Ultra 9 285 sits near AMD EPYC server parts, with its closest rival being the EPYC 8224P at 75582, a -0.1% delta.

Architecture Differences

The two processors are built on different process nodes and use different core architectures. The AMD Ryzen AI 5 340 uses Zen 5 architecture on a 4 nm node from TSMC, with a die size of 195 mm². The Intel Core Ultra 9 285 uses Arrow Lake architecture on a 3 nm node, also from TSMC, with a die size of 243 mm² and 17,800 million transistors.

Core counts differ sharply. The AMD part has 6 cores and 12 threads. The Intel part has 24 cores and 24 threads, with no hyperthreading. The cache layouts also diverge. AMD provides 80 KB of L1 per core, 1 MB of L2 per core, and 8 MB of L3. Intel provides 192 KB of L1 per core, 3 MB of L2 per core, and 36 MB of shared L3. The larger L3 cache on the Intel part likely contributes to its advantage in workloads that reuse data sets.

Clock speeds favor Intel as well. The AMD base clock is 2.00 GHz with a boost of 4.80 GHz. The Intel base clock is 2.50 GHz with a boost of 5.60 GHz. The thermal design power also differs: AMD is rated at 28 W, while Intel is rated at 65 W. The Intel part is a desktop processor on Socket 1851, while the AMD part is a mobile processor on Socket FP8.

Memory support differs. The AMD part supports DDR5 and LPDDR5X in a dual-channel configuration with 89.6 GB/s bandwidth. The Intel part supports DDR5 only, also dual-channel, with 102.4 GB/s bandwidth. The Intel part supports ECC memory; the AMD part does not. PCIe support also differs: AMD provides Gen 4 with 16 lanes, while Intel provides Gen 5 with 20 lanes.

Integrated graphics differ as well. AMD uses the Radeon 840M, while Intel uses Arc Xe-LPG Graphics 64EU. The Intel part has a launch MSRP of $579. The AMD part has no recorded launch MSRP. The AMD release date is 2025-01-05, and the Intel release date is 2024-12-31.

Where Each One Wins

The recorded data shows no benchmark category where the AMD Ryzen AI 5 340 outperforms the Intel Core Ultra 9 285. Every test in the head-to-head set, from Cinebench R15 and R23 to all PassMark subtests, is won by Intel. The closest contest is PassMark single-thread, where the AMD part trails by -24.5%, a notable result given the large core count difference. That suggests the Zen 5 architecture is competitive on a per-thread basis, but the Intel part still leads.

For workloads that depend on multi-core throughput, the Intel part is in a different class. Cinebench R23 multi-core shows a -74.4% delta, and PassMark multi-thread shows -65.5%. Rendering, video encoding, compilation, and other parallel workloads will favor the Intel processor by a large margin.

For single-threaded tasks such as general desktop responsiveness, light productivity, and older software that uses one or two cores, the Intel part still leads, but the gap narrows. The PassMark single-thread score of 3683 for AMD versus 4881 for Intel is the smallest relative difference in the dataset.

The AMD part's lower core count, lower clock speeds, and 28 W TDP indicate it is designed for mobile systems where power efficiency matters. The Intel part, with 65 W TDP and a desktop socket, is positioned for high-throughput desktop workloads. The data does not show any scenario where the AMD part wins, so the use-case split is defined by the platform and power envelope rather than by performance advantages.

The Verdict

The benchmark data is unambiguous. The Intel Core Ultra 9 285 outperforms the AMD Ryzen AI 5 340 in every recorded test. The Intel part leads by at least -24.5% in PassMark single-thread and by as much as -84.3% in PassMark find prime numbers. The average benchmark score for Intel is 75488, placing it in the 95th percentile, while AMD averages 25981, placing it in the 78th percentile.

The Intel processor is the correct choice for workloads that demand maximum multi-core throughput, given its 24 cores, 36 MB of shared L3 cache, and 5.60 GHz boost clock. The AMD processor, with 6 cores, 8 MB of L3, and a 4.80 GHz boost clock, is suited to a lower-power mobile platform. The 28 W TDP versus 65 W TDP difference reinforces this.

The AMD part's nearest rivals in the database are mid-range desktop and mobile chips like the Intel Core i7-14701TE and AMD Ryzen 5 8640HS, with average scores within 0.7% of the Ryzen AI 5 340. The Intel part's nearest rivals are AMD EPYC server processors, with average scores within 0.3%. The Core Ultra 9 285 competes in a much higher performance tier.

For a desktop build where performance is the priority, the data points to the Intel Core Ultra 9 285. For a mobile system where power draw and platform type matter more, the AMD Ryzen AI 5 340 is the only one of the two that fits, since it uses Socket FP8. The recorded benchmarks provide no reason to choose the AMD part on performance grounds.

FAQ

Q: Which processor has the higher multi-core Cinebench R23 score?

A: The Intel Core Ultra 9 285 scores 48945, while the AMD Ryzen AI 5 340 scores 12532, a -74.4% delta for AMD.

Q: How large is the single-thread performance gap?

A: In PassMark single-thread, Intel scores 4881 and AMD scores 3683, a -24.5% delta. In Cinebench R23 single-core, Intel scores 6909 and AMD scores 1915.5, a -72.3% delta.

Q: What are the core and thread counts?

A: The AMD Ryzen AI 5 340 has 6 cores and 12 threads. The Intel Core Ultra 9 285 has 24 cores and 24 threads.

Q: Which processor supports ECC memory?

A: The Intel Core Ultra 9 285 supports ECC memory. The AMD Ryzen AI 5 340 does not.

Q: What is the L3 cache size for each processor?

A: The AMD part has 8 MB of L3 cache. The Intel part has 36 MB of shared L3 cache.

Q: What is the memory bandwidth for each?

A: The AMD part has 89.6 GB/s, while the Intel part has 102.4 GB/s. Both use dual-channel memory, but AMD supports DDR5 and LPDDR5X while Intel supports DDR5 only.

Specification Differences

| Specification | AMD Ryzen AI 5 340 | Intel Core Ultra 9 285 |

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

| Cores | 6 | 24 |

| Threads | 12 | 24 |

| Base Clock | 2.00 GHz | 2.50 GHz |

| Boost Clock | 4.80 GHz | 5.60 GHz |

| TDP | 28 W | 65 W |

| Socket | AMD Socket FP8 | Intel Socket 1851 |

| Architecture | Zen 5 | Arrow Lake |

| Process Node | 4 nm | 3 nm |

| Die Size | 195 mm² | 243 mm² |

| Transistors | Not recorded | 17,800 million |

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

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

| L3 Cache | 8 MB | 36 MB (shared) |

| Memory Support | DDR5, LPDDR5X | DDR5 |

| Memory Bandwidth | 89.6 GB/s | 102.4 GB/s |

| ECC Memory | No | Yes |

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

| Integrated Graphics | Radeon 840M | Arc Xe-LPG Graphics 64EU |

| Market Segment | Mobile | Desktop |

| Release Date | 2025-01-05 | 2024-12-31 |

| Launch MSRP | Not recorded | $579 |

| Part Number | 100-000001602 | SRQD4 |