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AMD Ryzen 7 3800X vs Intel Core Ultra 7 265KF: Comparison
AMD Ryzen 7 3800X and Intel Core Ultra 7 265KF separate most on l2 cache: AMD Ryzen 7 3800X at 4 MB, Intel Core Ultra 7 265KF at 36 MB, 89% in favour of Intel Core Ultra 7 265KF. PCIe Lanes splits them by another 17%, again favouring Intel Core Ultra 7 265KF. They match on 8 other specifications, including form factor, market segment and performance cores. In Blender Cycles (CPU) the Intel Core Ultra 7 265KF scores 475 against 173 for the AMD Ryzen 7 3800X, a lead of 64%.
Specs
| Specification |  |  |
|---|---|---|
| Form Factor | Desktop | Desktop |
| Codename | Matisse | Arrow Lake-S |
| Release Year | 2019 | 2024 |
| TDP | 105 W | 65 W |
| Market Segment | Desktop | Desktop |
| Socket | AM4 | LGA 1851 |
| Socket Status | End of Life | Current |
| Process Node | 7 nm | 3 nm |
| Performance Cores | 8 | 8 |
| Efficiency Cores | 0 | 12 |
| SMT Enabled | true | false |
| P-Core Base Clock | 3.9 | 3.9 |
| P-Core Boost Clock | 4.5 | 5.4 |
| Unlocked Multiplier | true | true |
| L2 Cache | 4 MB-89% | 36 MB |
| L3 Cache | 32 MB | 30 MB-6% |
| Base Power | 105 W | 125 W |
| Max Turbo Power | 142 | 250 |
| Memory Type | DDR4 | DDR5 |
| Max Memory Speed | 3200 | 6400 |
| Memory Channels | 2 | 2 |
| Max Memory Capacity | 128 | 256 |
| ECC Support | false | false |
| Integrated Graphics | No | No |
| PCIe Generation | 4 | PCIe 5.0 |
| PCIe Lanes | 20-17% | 24 |
| Launch MSRP | 399 | 379 |
| Retail Availability | Retail | Boxed Retail |
| Architecture | Zen 2, Ryzen 3000 Series | Arrow Lake-S |
| Cores | 8 | 20 |
| Threads | 16 | 20 |
Benchmarks
Measured results, not specifications. Percentages are the gap to the leading product in each test.
Blender Cycles (CPU)
Blender 4.5, Blender Open Data (CC0). Median of monster + junkshop + classroom, combined samples/min.
Blender renders 3D scenes by tracing light through them, which loads every core at once. The score measures sustained multi-core throughput, so a chip that wins here can still lose at gaming, where one or two fast cores matter more. Figures come from Blender's Open Data project, which places no restriction on reuse, and we publish the median of every submission for that chip on the same Blender version.
Verdict
Intel Core Ultra 7 265KF
8.5 / 10 Expert Rating
The Intel Core Ultra 7 265KF is a flagship unlocked desktop Arrow Lake-S processor, a solid pick for overclocking enthusiasts.
More comparisons in Processors (CPUs)
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- Intel Core Ultra 5 245 vs Intel Core Ultra 7 265KF
- Intel 10th Gen Intel Core i9 10900 vs Intel Core Ultra 7 265KF
- Intel 10th Gen Intel Core i7 10700 vs Intel Core Ultra 7 265KF
- Intel Core Ultra 7 265KF vs Intel Processor U300L
- Intel Core Ultra 7 265KF vs Intel Core Ultra 9 285T