Solo dev weighs $5k-$20k local AI upgrade: dual RTX 3090 rig vs clustered DGX Spark GB10
ChopSticksPlease · reddit · 2026-09-29
A solo developer details his local AI coding setup: an RTX 3090 dev server running Qwen3.8 UD Q4KXL with 128k context, and a 2x RTX 3090 + 128GB RAM lab server running Qwen3.8 Flash Next at 256k context—performance close to a single DGX Spark GB10. He runs up to three concurrent cline/opencode sessions and needs local inference for confidential work. He asks whether $5k-$20k is better spent on one or two clustered GB10 machines for more concurrent agent sessions.
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