Dual RTX 3090 on Ryzen 3700X (X470)

⚠ Source not independently checked. This build comes from a Reddit post we could not fetch to re-verify the numbers. Treat as reported, not confirmed.

GPU(s)	2x Zotac RTX 3090 Amazon · eBay (used) · Newegg
VRAM / unified memory (GB)	48
CPU	AMD Ryzen 7 3700X Amazon · eBay (used) · Newegg
Motherboard	MSI X470 Gaming Plus Amazon · eBay (used) · Newegg
RAM	48 GB DDR4 Amazon · eBay (used) · Newegg
PSU	Corsair 1000W Amazon · eBay (used) · Newegg
Other
Reported total cost
Power	GPU power limit 270 W each

Measured speed (generation tokens/sec)

Model	Quant	Engine	tok/s
Llama 3 70B	Q4_K_M	Ollama	16.95
Llama 3 70B	AWQ 4-bit	vLLM (TP=2)	21.2

Source: https://www.reddit.com/r/LocalLLaMA/comments/1d5vxe7/so_i_bought_second_3090_here_are_my_results_llama/

Blank fields = not stated in the source. We never estimate build data; GPU street prices above are separately sourced and dated.

Rent before you buy: try this model on a cloud GPU for a few dollars first: RunPod