Can Desktop PC · GeForce RTX 3090 · 64 GB RAM run Step 5 Preview 600B-A27B?
24 GB VRAM + 64 GB RAM · 936 GB/s memory bandwidth · Step 5 Preview 600B-A27B has 600B parameters (27B active per token).
Short answer
No. This combination isn't supported.
Step 5 Preview 600B-A27B is not published in a format llama.cpp (llama-server) can load (GGUF).
The same applies to every workload we rate (chat, coding questions, coding in a repository, agentic coding and long documents): they all need at least as much memory as chat.
Other models for Desktop PC · GeForce RTX 3090 · 64 GB RAM
The best-rated models for chat on this machine.
- Qwen3.6 35B-A3B210–280 tok/sExcellent
- Gemma 4 26B-A4B140–190 tok/sExcellent
- LFM2.5 24B-A2B300–410 tok/sExcellent
- Qwen3.5 35B-A3B210–280 tok/sExcellent
- GLM-4.7-Flash (30B-A3B)210–280 tok/sExcellent
- gpt-oss-20b≈150 tok/sExcellent
Cheapest machines for Step 5 Preview 600B-A27B
Hardware rated comfortable or better for chat, lowest price first.
No machine in our catalog runs it comfortably for chat.
Same chip, other memory: 32 GB
Different tool, context size or workload?
These pages use typical settings. The full check models your exact setup.