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Intel Core i9 10900X vs i9 10900KF

We compared two 10-core desktop CPUs: the 3.7 GHz Intel Core i9 10900X against the 3.7 GHz i9 10900KF. 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 10900KF and 10900X
Advantages of Intel Core i9 10900X
  • Supports up to 256 GB DDR4-2933 RAM
  • Supports quad-channel memory
Advantages of Intel Core i9 10900KF
  • Newer - released 7-months later
  • Consumes up to 24% less energy than the Core i9 10900X – 125 vs 165 Watt
  • 18% higher Turbo Boost frequency (5.3 GHz vs 4.5 GHz)
  • 16% faster in a single-core Geekbench v5 test - 1348 vs 1158 points
  • More than 6° C higher critical temperature


Comparing the performance of CPUs in benchmarks
Cinebench R20 (Single-Core)
Cinebench R20 (Multi-Core)
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)


Full technical specification of Intel Core i9 10900X and i9 10900KF


Vendor Intel Intel
Released October 7, 2019 May 1, 2020
Launch price 590 USD 472 USD
Type Desktop Desktop
Codename Cascade Lake Comet Lake
Model number i9-10900X i9-10900KF
Socket LGA-2066 BGA-1200
Integrated GPU No No


Cores 10 10
Threads 20 20
Base Frequency 3.7 GHz 3.7 GHz
Turbo Boost Frequency 4.5 GHz 5.3 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 37x 37x
Bus Bandwidth - 8 GT/s
L1 Cache 64K (per core) 64K (per core)
L2 Cache 1MB (per core) 256K (per core)
L3 Cache 20MB (shared) 20MB (shared)
Unlocked Multiplier Yes Yes


Fabrication process 14 nm 14 nm
TDP 165 W 125 W
Max. temperature 94°C 100°C

Memory support

Memory types DDR4-2933 DDR4-2933
Memory Size 256 GB 128 GB
Max. Memory Channels 4 2
Max. Memory Bandwidth - 45.8 GB/s
ECC Support No No


Official site Intel Core i9 10900X official page Intel Core i9 10900KF official page
PCI Express Version 3.0 3.0
PCI Express Lanes 48 16
Instruction Set SSE4.1, SSE4.2, AVX-2, AVX-512 -

Cast your vote

Choose between two processors
6 (42.9%)
8 (57.1%)
Total votes: 14


So which CPU will you choose: Intel Core i9 10900KF or i9 10900X?