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Home / Compare / RTX 3090 24GB vs RTX 4090 24GB
HARDWARE HEAD-TO-HEAD

RTX 3090 24GB
vs RTX 4090 24GB

The larger memory number is not automatically the better overall machine.

A

RTX 3090 24GB

Memory24 GB
TypeVRAM
StackCUDA
Positionused-market 24 GB local AI favorite
B

RTX 4090 24GB

Memory24 GB
TypeVRAM
StackCUDA
Positionstrong 24 GB inference and image generation
DECISIONChoose the model class first, then the machine.

For local AI, wrong capacity is a hard failure. After capacity, compare bandwidth, runtime support, power, noise, upgradeability, and total system cost.