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AMD Ryzen 9 3900XT vs Intel Core i9-12900: Comparison
AMD Ryzen 9 3900XT and Intel Core i9-12900 separate most on l2 cache: AMD Ryzen 9 3900XT at 6 MB, Intel Core i9-12900 at 14 MB, 57% in favour of Intel Core i9-12900. L3 Cache splits them by another 53%, this time favouring AMD Ryzen 9 3900XT. They match on 6 other specifications, including market segment, smt enabled and memory channels.
Specs
| Specification |  |  |
|---|---|---|
| Product Line | Ryzen 9 | Core |
| Form Factor | Desktops, Boxed Processor | Desktop |
| Model Number | 3900XT | i9-12900 |
| Codename | Matisse | Alder Lake |
| Release Year | 2020 | 2022 |
| TDP | 105 W | 65 W |
| iGPU | Discrete Graphics Card Required | Intel UHD Graphics 770 |
| Market Segment | Desktop | Desktop |
| Socket | AM4 | LGA 1700 |
| Socket Status | End of Life | Mature |
| Process Node | 7 nm | 10 nm |
| Performance Cores | 12 | 8 |
| Efficiency Cores | 0 | 8 |
| SMT Enabled | true | true |
| P-Core Base Clock | 3.8 | 2.4 |
| P-Core Boost Clock | 4.7 | 5.1 |
| Unlocked Multiplier | true | false |
| L2 Cache | 6 MB-57% | 14 MB |
| L3 Cache | 64 MB | 30 MB-53% |
| Base Power | 105 W | 65 W |
| Max Turbo Power | 142 | 202 |
| Memory Type | DDR4 | DDR5 or DDR4 |
| Max Memory Speed | 3200 | 4800 |
| Memory Channels | 2 | 2 |
| Max Memory Capacity | 128 | 128 |
| Integrated Graphics | No | Yes |
| PCIe Generation | 4 | PCIe 5.0 |
| PCIe Lanes | 20 | 20 |
| Launch MSRP | 499 | 489 |
| Retail Availability | Retail | Boxed Retail |
| Cores | 12 | 16 |
| Threads | 24 | 24 |
Verdict
Intel Core i9-12900
8.2 / 10 Expert Rating
The Intel Core i9-12900 is a mainstream desktop processor, a solid all-rounder for gaming and productivity builds.