GPU × local model compatibility
Can RTX 4070 Ti SUPER 16GB run OpenAI gpt-oss-20b?
Yes — with limited memory headroom.
Sixteen gigabytes is the practical single-GPU class for the official gpt-oss-20b MXFP4 checkpoint at moderate context.
14.28GBVRAM required
16.00GBAvailable memory
1.72GBMemory headroom
MXFP4Recommended quantization
8KContext
Try these alternatives:InternVL3 5-GPT-OSS-20B-A4B-PreviewKimi-VL-A3B-InstructKimi-VL-A3B-Thinking-2506
Calculated estimate, not a measured benchmark.