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#183 of 555
Overall rank
Core i9-11900KB
8 cores · 16 threads · up to 4.9 GHz on FCBGA1787.
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Cores
8
Threads
16
Boost
4.9 GHz
L3 cache
24 MB
TDP
65W
Socket
FCBGA1787
Performance breakdown
Gaming14
Productivity13
Single-core14
Multi-core33
Power efficiency12
Lab scores
Performance score14
Cores8
Threads16
Boost clock (GHz)4.9 GHz
Estimated gaming FPS
Paired with a high-end GPU. CPU impact is largest at 1080p.
1080p31 fps
1440p25 fps
4K17 fps
Full specifications
Processor & cores
- Architecture
- Tiger Lake-H
- Process node
- 10 nm SuperFin
- Socket
- FCBGA1787
- Release year
- 2021
- Total cores
- 8
- Threads
- 16
- Integrated graphics
- Intel UHD Graphics for 11th Gen Intel Processors
Clocks & cache
- Base clock
- 3.3 GHz
- Boost clock
- 4.9 GHz
- L1 cache
- 640 KB
- L2 cache
- 10 MB
- L3 cache
- 24 MB
Memory & platform
- Memory support
- DDR4
- Max capacity
- 128 GB
- Channels
- 2
- Max bandwidth
- 51.2 GB/s
- Base power (TDP)
- 65W
- Max temperature
- 100°C
- PCIe
- PCIe 4.0
- Launch price
- $539
Technologies
- Instruction sets
- SSE4.1, SSE4.2, AVX2
- Extensions
- AES-NI, AVX, VT-x, VT-d, Turbo Boost Max 3.0, TXT
Community Feedback
What Owners Say
Fans love its snappy everyday performance for a small chip. The usual gripe is it runs hot under load and the socket limits upgrade options.
Pros
- Feels fast in everyday tasks
- Keeps cool under heavy loads
- Gets work done without drama
- Fits tight spaces easily
Cons
- No real overclocking headroom
- Runs hot under heavy load
- Limited core count for price
Verdict
Our verdict on the Core i9-11900KB
A mobile-derived desktop chip that fights hard but can't escape its eight-core ceiling.
Get it if you need a compact, decently capable CPU for a mini PC or embedded build where power and space are tight. Skip it if you want desktop-level performance or upgrade flexibility—this chip is soldered and outclassed by cheaper alternatives.
Buy it if…
- You need a compact mini-PC with strong single-threaded performance.
- You want an Intel NUC for moderate gaming without a big power draw.
- You are building a small home server that needs quick single-core tasks.
Leaderboard
Its place in the overall top
2.2
9 votes
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