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Intel Core i3 8121U vs Core i5 8400T

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Specification Charts

Combined Speed (all threads combined)

Core i5 8400T 10.2 GT/s
Core i3 8121U 8.8 GT/s
Difference: 1.4 (16%)

Core Speed

Core i3 8121U 2.2 GHz
Core i5 8400T 1.7 GHz
Difference: 0.5 (29%)


Core i5 8400T 6
Core i3 8121U 4
Difference: 2 (50%)


Core i5 8400T 35 Watts
Core i3 8121U 15 Watts
Difference: 20 (133%)

Price Comparison

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Core i3 8121U

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Model Core i3 8121U Core i5 8400T
Manufacturer Intel Intel
Architecture Cannon Lake Coffee Lake
Core Speed 2.2 GHz 1.7 GHz
Hyperthreading Yes No
Cores / Modules 2 6
Total Threads 4 6
Turbo 3.2 GHz 3.7 GHz
L2 Cache
L3 Cache 4MB 9MB
GPU Model UHD 630
TDP 15 Watts 35 Watts
Socket LGA 1151
Released 2018 August 2017