GPU HEAD-TO-HEAD

NVIDIA RTX 5080 vs AMD Radeon RX 6600

Which graphics card is better for running local language models? Here is how the NVIDIA RTX 5080 (16 GB) compares against the AMD Radeon RX 6600 (8 GB) in real memory headroom, supported model architectures, and generation speed.

NVIDIA · Blackwell 16 GB VRAM

NVIDIA RTX 5080

  • Memory Bandwidth: 960 GB/s (GDDR7 256-bit)
  • Fits fully in VRAM: 34 popular models
  • Power Draw (TDP): 400W
  • Largest recommended (Q4): 20B–22B
View all NVIDIA RTX 5080 models →
AMD · Desktop 8 GB VRAM

AMD Radeon RX 6600

  • Memory Bandwidth: 256 GB/s (GDDR6)
  • Fits fully in VRAM: 27 popular models
  • Power Draw (TDP): 150W
  • Largest recommended (Q4): 8B
View all AMD Radeon RX 6600 models →

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

The NVIDIA RTX 5080 is the clear winner for local AI. It provides both 8 GB more VRAM and higher memory bandwidth (960 GB/s vs 256 GB/s).

This allows it to run larger model architectures entirely in video memory while also delivering faster token generation speeds on models of all sizes.

Models that fit on NVIDIA RTX 5080, but NOT on AMD Radeon RX 6600

These models run entirely in GPU VRAM on the NVIDIA RTX 5080, but require slow system RAM offload on the AMD Radeon RX 6600:

Model Size Downloads NVIDIA RTX 5080 AMD Radeon RX 6600
unsloth/Qwen3-Coder-30B-A3B-Instruct-GGUF 30.53B 10,762,547 Fits in VRAM Offload (Slow)
unsloth/gpt-oss-20b-GGUF 20.91B 501,909 Fits in VRAM Offload (Slow)
unsloth/Qwen-AgentWorld-35B-A3B-GGUF 34.66B 373,970 Fits in VRAM Offload (Slow)
bartowski/Kwaipilot_KAT-Coder-V2.5-Dev-GGUF 34.66B 360,510 Fits in VRAM Offload (Slow)
MaziyarPanahi/Qwen3-30B-A3B-GGUF 30.53B 260,445 Fits in VRAM Offload (Slow)
MaziyarPanahi/Qwen3-32B-GGUF 32.76B 259,844 Fits in VRAM Offload (Slow)
bartowski/Qwen2.5-32B-Instruct-GGUF 32.76B 216,296 Fits in VRAM Offload (Slow)

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 →