GPU HEAD-TO-HEAD

AMD Radeon RX 7900 XTX vs NVIDIA RTX 3090

Which graphics card is better for running local language models? Here is how the AMD Radeon RX 7900 XTX (24 GB) compares against the NVIDIA RTX 3090 (24 GB) in real memory headroom, supported model architectures, and generation speed.

AMD · RDNA 3 24 GB VRAM

AMD Radeon RX 7900 XTX

  • Memory Bandwidth: 960 GB/s (GDDR6 384-bit)
  • Fits fully in VRAM: 37 popular models
  • Power Draw (TDP): 355W
  • Largest recommended (Q4): 32B–34B
View all AMD Radeon RX 7900 XTX models →
NVIDIA · Ampere 24 GB VRAM

NVIDIA RTX 3090

  • Memory Bandwidth: 936 GB/s (GDDR6X 384-bit)
  • Fits fully in VRAM: 37 popular models
  • Power Draw (TDP): 350W
  • Largest recommended (Q4): 32B–34B
View all NVIDIA RTX 3090 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: The AMD Radeon RX 7900 XTX leads with 960 GB/s vs 936 GB/s (3.0% faster memory), giving it a direct advantage in token generation throughput.

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