DeepSeek V4 Flash on 4x RTX Pro 6000 Blackwell: Setup, Benchmarks, and Cost-Per-Token (2026)
What a 4x RTX Pro 6000 Blackwell rig actually buys you for DeepSeek V4 Flash: throughput, VRAM headroom, the SM120 vLLM compile bug, and break-even vs the DeepSeek API.