Home > CPU Comparisons > Core i9 11900KF or Core i9 11900: what's better?

Intel Core i9 11900KF vs i9 11900

We compared two 8-core desktop CPUs: the 3.5 GHz Intel Core i9 11900KF against the 2.5 GHz i9 11900. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.


General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Measure performance when all cores are involved
Power Efficiency
The efficiency score of electricity consumption
NanoReview Final Score
Generic CPU rating

Key Differences

What are the key differences between 11900 and 11900KF
Advantages of Intel Core i9 11900KF
  • Unlocked multiplier
  • 2% higher Turbo Boost frequency (5.3 GHz vs 5.2 GHz)
Advantages of Intel Core i9 11900
  • Consumes up to 48% less energy than the Core i9 11900KF – 65 vs 125 Watt
  • Includes an integrated GPU Intel UHD Graphics 750


Comparing the performance of CPUs in benchmarks
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)


Full technical specification of Intel Core i9 11900KF and i9 11900


Vendor Intel Intel
Released March 16, 2021 March 16, 2021
Launch price 513 USD 439 USD
Type Desktop Desktop
Codename Rocket Lake Rocket Lake
Model number i9-11900KF i9-11900
Socket BGA-1200 BGA-1200
Integrated GPU No Intel UHD Graphics 750


Cores 8 8
Threads 16 16
Base Frequency 3.5 GHz 2.5 GHz
Turbo Boost Frequency 5.3 GHz 5.2 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 35x 25x
Bus Bandwidth 8 GT/s 8 GT/s
L1 Cache 64K (per core) 64K (per core)
L2 Cache 512K (per core) 256K (per core)
L3 Cache 16MB (shared) 16MB (shared)
Unlocked Multiplier Yes No


Fabrication process 14 nm 14 nm
TDP 125 W 65 W
Max. temperature 100°C 100°C

Memory support

Memory types DDR4-3200 DDR4-3200
Memory Size 128 GB 128 GB
Max. Memory Channels 2 2
Max. Memory Bandwidth 50 GB/s 50 GB/s
ECC Support No No


Official site Intel Core i9 11900KF official page Intel Core i9 11900 official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 20

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So which CPU will you choose: Intel Core i9 11900 or i9 11900KF?