Intel Core i9 12900K vs i9 12900H
We compared two CPUs: the 3,2 GHz Intel Core i9 12900K (desktop) with 16-cores against the 2.5 GHz i9 12900H (laptop) with 14-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.
Review
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of electricity consumption
NanoReview Final Score
Generic CPU rating
Key Differences
Advantages of Intel Core i9 12900K
- Unlocked multiplier
- Supports up to 128 GB DDR5-4800 RAM
- Has 6144 KB larger L3 cache size
- Newer PCI Express version – 5.0
- Has 2 more physical cores
- 2% higher Turbo Boost frequency (5.1 GHz vs 5 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
| Vendor | Intel | Intel |
| Released | October 27, 2021 | January 4, 2022 |
| Type | Desktop | Laptop |
| instruction set | x86-64 | x86-64 |
| Codename | Alder Lake | Alder Lake |
| Model number | i9-12900K | i9-12900H |
| Integrated GPU | UHD Graphics 770 | Iris Xe Graphics (96EU) |
CPU
| P-Cores | 8 | 6 |
| P-Threads | 16 | 12 |
| Base Frequency (P) | 3,2 GHz | 2.5 GHz |
| Turbo Boost Frequency (P) | 5.1 GHz | 5 GHz |
| E-Cores | 8 | 8 |
| E-Threads | 8 | 8 |
| Base Frequency (E) | 2.4 GHz | 1.8 GHz |
| Turbo Boost Frequency (E) | 3.9 GHz | 3.8 GHz |
| Total Cores | 16 | 14 |
| Total Threads | 24 | 20 |
| Bus Frequency | 100 MHz | 100 MHz |
| Multiplier | 32x | 25x |
| L1 Cache | 64K (per core) | 80K (per core) |
| L2 Cache | 14MB (shared) | 1280K (per core) |
| L3 Cache | 30MB (shared) | 24MB (shared) |
| Unlocked Multiplier | Yes | No |
Package
| Fabrication process | 10 nm | 10 nm |
| Socket | LGA-1700 | BGA-1744 |
| TDP | 125 W | 35-45 W (configurable) |
| Max. Boost TDP | - | 115 W |
| Peak temperature | 100°C | 100°C |
iGPU
| Integrated Graphics | Intel UHD Graphics 770 | Intel Iris Xe Graphics (96EU) |
| GPU Base Clock | 300 MHz | 300 MHz |
| GPU Boost Clock | 1550 MHz | 1450 MHz |
| Shading Units | 256 | 768 |
| TMUs | 16 | 48 |
| ROPs | 8 | 24 |
| Execution Units | 32 | 96 |
| TGP | 15 W | 15 W |
iGPU FLOPS
Memory Support
| Memory types | DDR5-4800, DDR4-3200 | DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267 |
| Memory Size | 128 GB | 64 GB |
| Max. Memory Channels | 2 | 2 |
| Max. Memory Bandwidth | 76.8 GB/s | - |
| ECC Support | Yes | No |
Misc
| Official site | Intel Core i9 12900K official page | Intel Core i9 12900H official page |
| PCI Express Version | 5.0 | 4.0 |
| PCI Express Lanes | 20 | 28 |
Cast your vote
Total votes: 196