intel core i9 12900k vs intel core i9 7900x
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We compared two CPUs Intel Core i9 12900K (Desktop) 16-cores against Intel Core i9 7900X (Desktop) 10-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 Intel Core i9 12900K
- Newer released 4 years later
- Has 6 more physical cores
- Consumes up to 11% less energy than the Intel Core i9 7900X – 125 vs 140 Watt
- Has 16 MB larger L3 cache size
- 13% higher Turbo Boost frequency (5.2 GHz vs 4.5 GHz)
- More modern manufacturing process – 7 versus 14
Advantages of Intel Core i9 7900X
- Around 8.2 GB/s (10%) higher theoretical memory bandwidth
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
| Intel Core i9 12900K | Intel Core i9 7900X | |
| Vendor | Intel | Intel |
| Released | November 5 2021 | May 30 2017 |
| Type | Desktop | Desktop |
| instruction set | x86-64 | x86-64 |
| Codename | Alder Lake-S | Skylake-X |
| Socket | FCLGA1700 | FCLGA2066 |
| Integrated GPU | Intel UHD Graphics 770 | - |
Performance
| Intel Core i9 12900K | Intel Core i9 7900X | |
| Cores | 16 | 10 |
| Threads | 24 | 20 |
| Base Frequency | 3.2 GHz | 3.3 GHz |
| Turbo Boost Frequency | 5.2 GHz | 4.5 GHz |
| L1 Cache | 80K (per core) | 64K (per core) |
| L2 Cache | 1.25 MB (per core) | 1 MB (per core) |
| L3 Cache | 30 MB (shared) | 14 MB (shared) |
| Unlocked Multiplier | Yes | Yes |
Power
| Intel Core i9 12900K | Intel Core i9 7900X | |
| Fabrication process | Intel 7 nm | 14 nm |
| Power consumption (TDP) | 125 W | 140 W |
| Max. temperature | 100°C | 95°C |
Memory support
| Intel Core i9 12900K | Intel Core i9 7900X | |
| Memory types | DDR5, DDR4 | DDR4 |
| Memory Size | 128 GB | 128 GB |
| Max. Memory Channels | 2 | 4 |
| Max. Memory Bandwidth | 76.8 GB/s | 85 GB/s |
| ECC Support | Yes | No |
iGPU
| Intel Core i9 12900K | Intel Core i9 7900X | |
| Integrated Graphics | Intel UHD Graphics 770 | - |
| GPU Base Clock | 300 MHz | MHz |
| GPU Boost Clock | 1.55 MHz | MHz |
| Shading Units | 256 | |
| TMUs | 16 | |
| ROPs | 8 | |
| Execution Units | 32 | |
| TGP | 15 W | W |
iGPU FLOPS
Misc
| Intel Core i9 12900K | Intel Core i9 7900X | |
| Official site | Intel Core i9 12900K official page | Intel Core i9 7900X official page |
| PCI Express Version | 3 | |
| PCI Express Lanes | 20 | 44 |