amd ryzen 9 3900x vs intel core i9 11900k
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We compared two CPUs AMD Ryzen 9 3900X (Desktop) 12-cores against Intel Core i9 11900K (Desktop) 8-cores. In this comparison page, we check which of these two processor has better performance in benchmark results, Games, architecture, price and other useful information.
Review
Single-Core Performance
Performance in single-threaded apps and benchmarks
Performance
Measure performance when all cores are involved
Key Differences
Advantages of AMD Ryzen 9 3900X
- Has 4 more physical cores
- Around 1.2 GB/s (2%) higher theoretical memory bandwidth
- Has 48 MB larger L3 cache size
- More modern manufacturing process – 7 versus 14
Advantages of Intel Core i9 11900K
- Newer released 2 years later
- 12% higher Turbo Boost frequency (5.2 GHz vs 4.6 GHz)
Benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
Specifications
General
| AMD Ryzen 9 3900X | Intel Core i9 11900K | |
| Vendor | AMD | Intel |
| Released | July 7 2019 | April 30 2021 |
| Type | Desktop | Desktop |
| instruction set | x86-64 | x86-64 |
| Codename | Matisse | Rocket Lake |
| Socket | AM4 | FCLGA1200 |
| Integrated GPU | - | Intel UHD Graphics 750 |
Performance
| AMD Ryzen 9 3900X | Intel Core i9 11900K | |
| Cores | 12 | 8 |
| Threads | 24 | 16 |
| Base Frequency | 3.8 GHz | 3.5 GHz |
| Turbo Boost Frequency | 4.6 GHz | 5.2 GHz |
| L1 Cache | 96K (per core) | 64K (per core) |
| L2 Cache | 512K (per core) | 256K (per core) |
| L3 Cache | 64 MB | 16 MB (shared) |
| Unlocked Multiplier | Yes | Yes |
Power
| AMD Ryzen 9 3900X | Intel Core i9 11900K | |
| Fabrication process | 7 nm | 14 nm |
| Power consumption (TDP) | 125 W | 125 W |
| Max. temperature | 95°C | 100°C |
Memory support
| AMD Ryzen 9 3900X | Intel Core i9 11900K | |
| Memory types | DDR4 Dual-channel | DDR4 |
| Memory Size | 128 GB | 128 GB |
| Max. Memory Channels | 2 | 2 |
| Max. Memory Bandwidth | 51.196 GB/s | 50 GB/s |
| ECC Support | No | No |
iGPU
| AMD Ryzen 9 3900X | Intel Core i9 11900K | |
| Integrated Graphics | - | Intel UHD Graphics 750 |
| GPU Base Clock | MHz | 300 MHz |
| GPU Boost Clock | MHz | 1.3 MHz |
| Shading Units | 256 | |
| TMUs | 64 | |
| ROPs | 32 | |
| Execution Units | 32 | |
| TGP | W | 15 W |
iGPU FLOPS
Misc
| AMD Ryzen 9 3900X | Intel Core i9 11900K | |
| Official site | AMD Ryzen 9 3900X official page | Intel Core i9 11900K official page |
| PCI Express Version | 4 | |
| PCI Express Lanes | 20 |