GPU HEAD-TO-HEAD

NVIDIA RTX 3090 Ti vs NVIDIA RTX 4090

Which graphics card is better for running local language models? Here is how the NVIDIA RTX 3090 Ti (24 GB) compares against the NVIDIA RTX 4090 (24 GB) in real memory headroom, supported model architectures, and generation speed.

NVIDIA · Ampere 24 GB VRAM

NVIDIA RTX 3090 Ti

  • Memory Bandwidth: 1008 GB/s (GDDR6X 384-bit)
  • Fits fully in VRAM: 36 popular models
  • Power Draw (TDP): 450W
  • Largest recommended (Q4): 32B–34B
View all NVIDIA RTX 3090 Ti models →
NVIDIA · Ada Lovelace 24 GB VRAM

NVIDIA RTX 4090

  • Memory Bandwidth: 1008 GB/s (GDDR6X 384-bit)
  • Fits fully in VRAM: 36 popular models
  • Power Draw (TDP): 450W
  • Largest recommended (Q4): 32B–34B
View all NVIDIA RTX 4090 models →

The AI Local Check Verdict: Which GPU should you buy for AI?

Both graphics cards share the exact same VRAM capacity (24 GB), meaning they can run the exact same parameter counts and quantization levels.

The deciding factor is memory bandwidth: Both feature comparable memory bandwidth and will perform virtually identically in local LLM inference.

Other Popular GPU Comparisons

RTX 3060 12GB vs RTX 4060 8GB Compare VRAM & Models → RTX 4060 Ti 16GB vs RTX 4070 12GB Compare VRAM & Models → RTX 3090 24GB vs RTX 4090 24GB Compare VRAM & Models → RTX 4070 Super vs RTX 4070 Ti Super Compare VRAM & Models → RTX 5090 32GB vs RTX 4090 24GB Compare VRAM & Models → RTX 4080 Super 16GB vs RTX 4090 24GB Compare VRAM & Models → RTX 3060 12GB vs RTX 4060 Ti 16GB Compare VRAM & Models → AMD RX 7900 XTX vs NVIDIA RTX 4090 Compare VRAM & Models →