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

Intel Core i9 11900K vs i9 10900K

We compared two desktop CPUs: the 3.5 GHz Intel Core i9 11900K 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 11900K
Advantages of Intel Core i9 11900K
  • Newer - released 11-months later
  • Newer PCI Express version – 4.0
  • 32% faster in a single-core Geekbench v5 test - 1789 vs 1355 points
  • Around 4.2 GB/s (9%) higher theoretical memory bandwidth
Advantages of Intel Core i9 10900K
  • Has 2 more physical cores
  • Has 4 MB larger L3 cache size


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 11900K and i9 10900K


Vendor Intel Intel
Released March 16, 2021 May 1, 2020
Launch price 539 USD 488 USD
Type Desktop Desktop
Codename Rocket Lake Comet Lake
Model number i9-11900K 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 3.5 GHz 3.7 GHz
Turbo Boost Frequency 5.3 GHz 5.3 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 35x 37x
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) 20MB (shared)
Unlocked Multiplier Yes Yes


Fabrication process 14 nm 14 nm
TDP 125 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 11900K 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
163 (35.4%)
298 (64.6%)
Total votes: 461


So which CPU will you choose: Intel Core i9 10900K or i9 11900K?
hvh 29 March 2021 12:31
@Real I see you're very open minded. good for you :D
0 Reply
Slackaveli 22 February 2021 02:38
Actually, it's the Rocket Lake 11900k with the bigger cache. Sure, 10900k has more total L3 cache, but that's because of the extra 2 cores. Performance wise, that's still the same exact 2MB per core. However, the low level cache L1 is 50% larger on 11900k (96KB per core), and L2 cache is DOUBLE on 11900k (512KB vs 256KB) . In gaming that will translate to better minimums and thus smoother gameplay. And it will perform better in almost all games bc of it's higher single core scores and due to the fact that most games won't utilize the extra 2 cores on 10900k.
+26 Reply
real 17 February 2021 19:20
i will choose intel core i9 10900hk because i plan to buy the laptop asus zenbook pro duo 15 oled ux582 with the 10 th gen. it suppose to be available in april 2021. it will be nice if asus wait for the 11 th gen. probably the first laptop with 11 th gen. will be gaming laptop. i am not interest at all about gaming laptop. one thing thing it certain, i will never buy a apple product.
0 Reply