Intel Core i5 10400F vs i3 12100F

We compared two desktop CPUs: the 2.9 GHz Intel Core i5 10400F with 6-cores against the 3.3 GHz i3 12100F with 4-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 12100F and 10400F
Advantages of Intel Core i5 10400F
  • Has 2 more physical cores
Advantages of Intel Core i3 12100F
  • Newer - released 1-year and 9-months later
  • Around 35.2 GB/s (85%) higher theoretical memory bandwidth
  • Newer PCI Express version – 5.0
  • 52% faster in a single-core Geekbench v5 test - 1679 vs 1106 points
  • More modern manufacturing process – 10 versus 14 nanometers


Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
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Full technical specification of Intel Core i5 10400F and i3 12100F


Vendor Intel Intel
Released May 1, 2020 January 4, 2022
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Comet Lake Alder Lake
Model number i5-10400F i3-12100F
Integrated GPU No No


Performance Cores
P-Cores 6 4
P-Threads 12 8
Base Frequency (P) 2.9 GHz 3.3 GHz
Turbo Boost Frequency (P) 4.3 GHz 4.3 GHz
Total Cores 6 4
Total Threads 12 8
Bus Frequency 100 MHz 100 MHz
Multiplier 29x 33x
Bus Bandwidth 8 GT/s -
L1 Cache 64K (per core) 80K (per core)
L2 Cache 256K (per core) 1280K (per core)
L3 Cache 12MB (shared) 12MB (shared)
Unlocked Multiplier No No


Fabrication process 14 nm 10 nm
Socket LGA-1200 LGA-1700
TDP 65 W 58 W
Max. Boost TDP - 89 W
Peak temperature 100°C 100°C

Memory Support

Memory types DDR4-2666 DDR5-4800, DDR4-3200
Memory Size 128 GB 128 GB
Max. Memory Channels 2 2
Max. Memory Bandwidth 41.6 GB/s 76.8 GB/s
ECC Support No No


Official site Intel Core i5 10400F official page Intel Core i3 12100F official page
PCI Express Version 3.0 5.0
PCI Express Lanes 16 20

Cast your vote

Choose between two processors
49 (10%)
443 (90%)
Total votes: 492


So which CPU will you choose: Intel Core i3 12100F or i5 10400F?