Home > CPU Comparisons > Core i9 11900 or Core i9 10900K: what's better?

Intel Core i9 11900 vs i9 10900K

We compared two desktop CPUs: the 2.5 GHz Intel Core i9 11900 with 8-cores against the 3.7 GHz i9 10900K with 10-cores. 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 10900K and 11900
Advantages of Intel Core i9 11900
  • Newer - released 11-months later
  • Consumes up to 48% less energy than the Core i9 10900K – 65 vs 125 Watt
  • Newer PCI Express version – 4.0
  • 26% faster in a single-core Geekbench v5 test - 1714 vs 1355 points
  • Around 4.2 GB/s (9%) higher theoretical memory bandwidth
Advantages of Intel Core i9 10900K
  • Unlocked multiplier
  • Has 2 more physical cores
  • Has 4 MB larger L3 cache size
  • 2% higher Turbo Boost frequency (5.3 GHz vs 5.2 GHz)


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 11900 and i9 10900K


Vendor Intel Intel
Released March 16, 2021 May 1, 2020
Launch price 439 USD 488 USD
Type Desktop Desktop
Codename Rocket Lake Comet Lake
Model number i9-11900 i9-10900K
Socket BGA-1200 BGA-1200
Integrated GPU Intel UHD Graphics 750 Intel UHD Graphics 630


Cores 8 10
Threads 16 20
Base Frequency 2.5 GHz 3.7 GHz
Turbo Boost Frequency 5.2 GHz 5.3 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 25x 37x
Bus Bandwidth 8 GT/s 8 GT/s
L1 Cache 64K (per core) 64K (per core)
L2 Cache 256K (per core) 256K (per core)
L3 Cache 16MB (shared) 20MB (shared)
Unlocked Multiplier No Yes


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

Memory support

Memory types DDR4-3200 DDR4-2933
Memory Size 128 GB 128 GB
Max. Memory Channels 2 2
Max. Memory Bandwidth 50 GB/s 45.8 GB/s
ECC Support No No


Official site Intel Core i9 11900 official page Intel Core i9 10900K official page
PCI Express Version 4.0 3.0
PCI Express Lanes 20 16

Cast your vote

Choose between two processors
8 (100%)
0 (0%)
Total votes: 8


So which CPU will you choose: Intel Core i9 10900K or i9 11900?