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Intel Core i5 8400 vs Core i9 9900T

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Specification Charts

Combined Speed (all threads combined)

Core i9 9900T 33.6 GT/s
Core i5 8400 16.8 GT/s
Difference: 16.8 (100%)

Core Speed

Core i5 8400 2.8 GHz
Core i9 9900T 2.1 GHz
Difference: 0.7 (33%)


Core i9 9900T 16
Core i5 8400 6
Difference: 10 (167%)


Core i5 8400 65 Watts
Core i9 9900T 35 Watts
Difference: 30 (86%)

Price Comparison

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Display Specifications

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Model Core i5 8400 Core i9 9900T
Manufacturer Intel Intel
Architecture Coffee Lake Coffee Lake-S
Core Speed 2.8 GHz 2.1 GHz
Hyperthreading No Yes
Cores / Modules 6 8
Total Threads 6 16
Turbo 4 GHz 4.4
L2 Cache 8 x 256KB
L3 Cache 9MB 16MB
GPU Model UHD 630 UHD Graphics 630
TDP 65 Watts 35 Watts
Socket LGA 1151 LGA 1151
Released August 2017 April 2019