intel
Brand8/16
Cores/Threads3.5GHz
Base Clock125W
TDPIntel Core i9-11900K
intel
Brand16/24
Cores/Threads2.4GHz
Base Clock65W
TDPIntel Core i9-12900
Intel Core i9-11900K
Intel Core i9-11900K
$539 • Mar 2021
Intel Core i9-12900
$519 • Jan 2022
Intel Core i9-12900
Specs Comparison
| Specification | Intel Core i9-11900K | Intel Core i9-12900 |
|---|---|---|
| Cores | 8 | 16 |
| Threads | 16 | 24 |
| Hybrid Cores | N/A | P-Cores: 8, E-Cores: 8 |
| Base Clock | 3.5 GHz | 2.4 GHz |
| Boost Clock | 5.3 GHz | 5.1 GHz |
| Multiplier Unlocked | ✓ Yes | ✓ Yes |
| Multiplier | 35 X | 24 X |
| TDP | 125 W | 65 W |
| Memory Support | DDR4 | DDR4, DDR5 |
| Cache L1 | 80 KB | 80 KB |
| Cache L2 | 0.50 MB | 1.25 MB |
| Cache L3 | 16.00 MB | 30.00 MB |
| Integrated GPU | UHD Graphics 750 | UHD Graphics 770 |
| Architecture | Core i9 (Rocket Lake-S) | Core i9 (Alder Lake-S) |
| Process Size | 14nm | 10nm |
| Socket | intel socket 1200 | intel socket 1700 |
| Foundry | Intel | Intel |
| Die Size | 276 mm² | 215 mm² |
| PCI Express | Gen 4, 20 Lanes(CPU only) | Gen 5, 20 Lanes(CPU only) |
| Transistors | N/A | N/A |
| Max Temperature | 100°C | 100°C |
Comparison in Tools
Cinebench R23
Industry-leading 3D rendering benchmark that measures real-world CPU processing power and performance
Single Core Performance
Intel Core i9-11900K
Intel Core i9-12900
Multi Core Performance
Intel Core i9-11900K
Intel Core i9-12900
Geekbench 5
Popular cross-platform CPU benchmark measuring single and multi-core performance in real-world tasks
Single Core Performance
Intel Core i9-11900K
Intel Core i9-12900
Multi Core Performance
Intel Core i9-11900K
Intel Core i9-12900
PassMark
PassMark CPU Mark is a popular synthetic benchmark that scores overall CPU performance (higher is better).
Overall CPU Score
Intel Core i9-11900K
Intel Core i9-12900
Blender Benchmark
Measures CPU rendering speed in Blender, reported in frames per second (FPS). Higher FPS means faster completion of 3D rendering tasks.
Blender FPS
Intel Core i9-11900K
Intel Core i9-12900
Comparison in Games
No benchmark data available for this combination of CPUs yet.
We're working on collecting performance data for this combination of CPUs. Please check back later.
Intel Core i9-12900 Wins!
Based on 4 synthetic benchmarks
Intel Core i9-11900K
INTEL • 8/16 • 3.5GHz
Intel Core i9-12900
INTEL • 16/24 • 2.4GHz
Check out more comparisons
Comments & Discussion
Share your thoughts and experiences