Intel Core i9-11900H vs Intel Core i9-12900K
Intel Core i9-11900H
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The Intel Core i9-11900H is a high end octa core SoC for gaming laptops and mobile workstations. It is based on the Tiger Lake H45 generation and was announced in mid 2021. It integrates eight Willow Cove processor cores (16 threads thanks to HyperThreading). The base clock speed depends on the TDP setting and at 45 Watt is at 2.5 GHz. The single core boost speed can reach up to 4.9 GHz, all cores can reach up to 4.5 GHz. The CPU offers 24 MB level 3 cache and supports DDR4-3200 memory.
Thanks to the new Tiger Lake architecture, the i9-11900H should be similar or faster than the old Intel Core i9-10885H (Comet Lake-H, 2.4 - 5.3 GHz, 16 MB L3) in single and multi threaded performance and similar to the Ryzen 9 5800H (Zen 3, 3.2 - 4.4 GHz, 16 MB L3). Therefore, the i9 should be one of the fastest laptop CPUs in 2021 and well suited for even very demanding tasks.
The SoC also included the improved Xe graphics card called UHD graphics with all 32 EUs.
Furthermore, Tiger Lake SoCs add PCIe 4 support (20 lanes in the H45 series), AI hardware acceleration, and the partial integration of Thunderbolt 4/USB 4 and Wi-Fi 6E in the chip.
The chip is produced on the improved 10nm process (called 10nm SuperFin) at Intel, which should be comparable to the 7nm process at TSMC (e.g. Ryzen 4000 series). The default TDP is rated at 45 W at 2.5 GHz base speed, at 35 Watt the base clock speed decreases to 2.1 GHz (cTDP down).
All articles on Tiger Lake can be found on our Tiger Lake architecture hub.
Intel Core i9-12900K
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The Intel Core i9-12900K is a high end CPU for desktops based on the Alder Lake architecture. It was first announced in November 2021 and offers 8 performance cores and 8 efficiency cores. The performance cores (P-cores) support HyperThreading, leading to 24 Threads that can be processed at once. The performance cores can clock with up to 5.2 GHz (Turbo Boost Max 3.0), the efficiency cores can clock with up to 3.9 GHz. All cores can use 30 MB Smart Cache. The integrated memory controller supports up to 128 GB DDR5 with 4800 MT/s (dual channel).
The Thread Director (in hardware) can support the operating system to decide which thread to use on the performance or efficiency cores for the best performance.
For AI tasks, the CPU also integrates GNA 3.0 and DL Boost (most likely only using AVX2). Quick Sync in version 8 is the same as in the Rocket Lake CPUs and supports MPEG-2, AVC, VC-1 decode, JPEG, VP8 decode, VP9, HEVC and AV1 decode in hardware.
The integrated graphics adapter is based on the Xe architecture and called Intel UHD Graphics 770. It clocks between 300 and 1.55 GHz.
Performance
The average 12900K in our database nearly matches the Ryzen 9 3950X and the Ryzen 9 5950X in multi-thread performance. This is a great result, as of mid 2022.
Learn more by reading the Corsair One i300 review.
Power consumption
This Core i9 series chip has a Base power consumption of 125 W, with 241 W being its "Maximum Turbo" power consumption.
The i9-12900K is built with Intel's 4th generation 10 nm process marketed as Intel 7 for lower than average, as of mid 2023, energy efficiency.
| Model | Intel Core i9-11900H | Intel Core i9-12900K | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Codename | Tiger Lake-H | Alder Lake | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Series | Intel Tiger Lake | Intel Alder Lake-S | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Series: Alder Lake-S Alder Lake |
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| Clock | 2500 - 4900 MHz | 3200 - 5200 MHz | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| L1 Cache | 640 KB | 1.4 MB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| L2 Cache | 10 MB | 14 MB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| L3 Cache | 24 MB | 30 MB | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cores / Threads | 8 / 16 | 16 / 24 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| TDP | 45 Watt | 125 Watt | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Technology | 10 nm | 10 nm | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| max. Temp. | 100 °C | 100 °C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Socket | BGA1787 | LGA1700 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Features | DDR4-3200 RAM, PCIe 4, 8 GT/s bus, DL Boost, GNA, RPE, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, VMX, SMEP, SMAP, EIST, TM1, TM2, HT, Turbo, SST, AES-NI, RDRAND, RDSEED, SHA | DDR4-3200/DDR5-4800 RAM (incl. ECC), PCIe 5, Thread Director, DL Boost, GNA, vPro Enterprise, MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES, AVX, AVX2, FMA3, SHA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| iGPU | Intel UHD Graphics Xe 32EUs (Tiger Lake-H) (350 - 1450 MHz) | Intel UHD Graphics 770 (300 - 1550 MHz) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Architecture | x86 | x86 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Announced | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Manufacturer | ark.intel.com | ark.intel.com | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| $589 U.S. |
Benchmarks
Average Benchmarks Intel Core i9-11900H → 100% n=22
Average Benchmarks Intel Core i9-12900K → 157% n=22
- Average benchmark values for this graphics card* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation
