11th Gen Intel Core i9 11900K
- iGPU:
- Intel UHD Graphics Xe 750 (32 EU)
- Boost/Base Clock:
- 5.3 GHz / 3.5 GHz
- Core/Thread Count:
- 8 Core / 16 Thread
- Cache:
- 16MB L3 + 2MB L2 + 512KB L1
- TDP:
- 125 Watts
- CPU Process Node:
- 14 Nanometers
- CPU Socket:
- LGA 1200
- CPU Series:
- Rocket Lake
- Memory Support:
- DDR4-3200
- Form Factor:
- Desktop
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Manufacturer: Intel Last updated: September 9, 2026
11th Gen Intel Core i9 11900K Review
The 11th Gen Intel Core i9 11900K is Intel's Rocket Lake desktop flagship, an 8-core, 16-thread processor running a 3.5 GHz base clock that boosts to 5.3 GHz within a 125 Watt TDP on the LGA 1200 socket.
Rocket Lake was a genuine architectural backport, bringing Willow Cove-derived cores to Intel's 14nm desktop process, trading some core count against the outgoing 10-core Comet Lake flagship for real per-core IPC gains.
Intel UHD Graphics Xe 750 (32 EU)
A modest integrated GPU appropriate as a fallback; this desktop flagship is built around discrete GPU pairing for both gaming and productivity.
How Is the Core i9 11900K in Terms of Performance
The Willow Cove-derived cores deliver genuinely strong single-threaded and gaming performance, though the reduced 8-core count versus the outgoing 10-core i9-10900K means multi-threaded workloads don't scale as far in absolute terms, a real trade-off buyers should know about.
Benchmarks
Cinebench R23 multi-core scores of 15,166 and single-core scores of 1,638 reflect genuinely strong per-core performance. Geekbench 5 single-core scores of 1,861 lead most 10th Gen competitors, directly reflecting the architectural IPC gains Rocket Lake brought to Intel's desktop lineup.
Specifications
Identity
| Brand | Intel |
|---|---|
| Product Line | Core i9 |
| Product Line | Core i9 |
| Model Number | 11900K |
| Codename | Rocket Lake |
| Release Year | 2021 |
Segment and platform
| Market Segment | Desktop |
|---|---|
| Microarchitecture | Rocket Lake, 11th Gen Intel Core |
| Socket | LGA 1200 |
| Socket Status | End of Life |
| Process Node | 14 nm |
| Process Node | 14 nm |
Core configuration
| SMT Enabled | Yes |
|---|
Clock speeds
| P-Core Base Clock | 3.5 GHz |
|---|---|
| P-Core Boost Clock | 5.3 GHz |
Cache
| L2 Cache | 2 MB |
|---|---|
| L3 Cache | 16 MB |
Power and thermal
| Base Power | 125 W |
|---|
Memory
| Memory Type | DDR4 |
|---|---|
| Memory Channels | 2 |
| ECC Support | No |
Graphics and AI
| Integrated Graphics | Yes |
|---|---|
| iGPU Model | Intel UHD Graphics 750 |
| iGPU Compute Units | 32 |
Expansion
| PCIe Generation | PCIe 4.0 |
|---|---|
| PCIe Lanes | 20 |
Commercial
| Launch MSRP | 539 USD |
|---|---|
| Retail Availability | Retail |
| Form Factor | Desktop |
|---|---|
| Core/Thread Count | 8 Core / 16 Thread |
| TDP | 125 W |
| iGPU | Intel UHD Graphics Xe 750 (32 EU) |
| Cache | 16MB L3 + 2MB L2 + 512KB L1 |
| Boost/Base Clock | 5.3 GHz / 3.5 GHz |
| Memory Speed | DDR4-3200 |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Gaming-focused desktop builds prioritizing single-thread and per-core performance
Not for
- Buyers specifically needing maximum core count for heavy multi-threaded work — the outgoing 10-core i9-10900K or AMD's competing Ryzen 9 chips offer more raw cores
FAQs
What are the key specifications of the 11th Gen Intel Core i9 11900K?
The 11th Gen Intel Core i9 11900K is a processor from Intel. Key specs: iGPU Intel UHD Graphics Xe 750 (32 EU), Boost/Base Clock 5.3 GHz / 3.5 GHz, Core/Thread Count 8 Core / 16 Thread, Cache 16MB L3 + 2MB L2 + 512KB L1, TDP 125 Watts.
Will the 11th Gen Intel Core i9 11900K work with my current setup?
The 11th Gen Intel Core i9 11900K lists CPU Socket is LGA 1200. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the 11th Gen Intel Core i9 11900K best suited to?
It suits gaming-focused desktop builds prioritizing single-thread and per-core performance.
What are the drawbacks of the 11th Gen Intel Core i9 11900K?
It is a poor fit for buyers specifically needing maximum core count for heavy multi-threaded work — the outgoing 10-core i9-10900k or amd's competing ryzen 9 chips offer more raw cores.