AMD Ryzen 9 3900XT
- Cores: 12
- L3 cache: 64MB (shared)
- TDP: 105 W
- Transistor size: 7 nm
Ryzen 9 3900XT - desktop processor produced by Amd for socket AM4 that has 12 cores and 24 threads. The base clock frequency of the CPU is 3800 MHz, but due to Turbo Core technology, it can perform up to 4700 MHz. The size of the L3 cache is 64 MB. Please note that this chip doesn’t have integrated graphics.
Review
Compare AMD Ryzen 9 3900XT with other CPUs
Test in Benchmarks
Performance test of AMD Ryzen 9 3900XT in benchmarksCinebench
Cinebench Scores - 145th place
GeekBench v6
| File compression | 1040 MB/sec |
| Clang compilation | 111.3 Klines/sec |
| HTML 5 Browser | 217.5 pages/sec |
| PDF Renderer | 335.3 Mpixels/sec |
| Text processing | 143.6 pages/sec |
| Background blur | 32.4 images/sec |
| Photo processing | 74.9 images/sec |
| Ray tracing | 26.4 Mpixels/sec |
PassMark
| Integer math | 99.5 GOps/sec |
| Floating point math | 58.4 GOps/sec |
| Find prime numbers | 212M Primes/sec |
| Random string sorting | 48.1M Strings/sec |
| Data encryption | 28.6 GBytes/sec |
| Data compression | 451.3 MBytes/sec |
| Physics | 1758 Frames/sec |
| Extended instructions | 28.5B Matrices/sec |
Blender
Performance Per Watt
| Cinebench 2024 / Watt | 10 PPW |
| Geekbench 6 Multi / Watt | 103.9 PPW |
| Passmark CPU Mark / Watt | 309.2 PPW |
| Blender / Watt | 2.63 PPW |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Recent User Tests
| Date | Benchmark | Result |
|---|---|---|
| 📘 2025-03-15 (mattikatti) | Cinebench 2024 | 74 / 1050 |
Specifications
Ryzen 9 3900XT technical specificationsGeneral
| Vendor | Amd |
| Released | July 7, 2020 |
| Type | Desktop |
| Instruction Set | x86-64 |
| Codename | Zen 2 (Matisse) |
| Integrated GPU | No |
| Intel Equivalent | - Intel Core i9 9900K |
AMD Ryzen CPU ranking - 125th place
CPU
| P-Cores | 12 |
| P-Threads | 24 |
| Base Frequency (P) | 3.8 GHz |
| Turbo Boost Frequency (P) | 4.7 GHz |
| Total Cores | 12 |
| Total Threads | 24 |
| Bus Frequency | 100 MHz |
| Multiplier | 38x |
| L1 Cache | 64K (per core) |
| L2 Cache | 512K (per core) |
| L3 Cache | 64MB (shared) |
| Unlocked Multiplier | Yes |
Package
| Transistors | 3.8 billions |
| Fabrication Process | 7 nm |
| TDP (PL1) | 105 W |
| Socket | AM4 |
| Peak Temperature | 95°C |
Desktop CPU ranking - 120th place
Memory Support
| Memory Types | - DDR4-3200 |
| Max. Memory Size | 128 GB |
| Memory Channels | 2 |
| Max. Memory Bandwidth | 47.68 GB/s |
| ECC Support | Yes |
Misc
| Official Site | AMD Ryzen 9 3900XT official page |
| PCI Express Version | 4.0 |
| PCI Express Lanes | 24 |
| Technologies | - Compute: BMI1, BMI2, F16C, SHA
- Performance: Precision Boost 2, SMT, XFR 2
- Virtualization: AMD-V
- Security: EVP, SMAP, SMEP |