a 5-year-old GPU still beats nvidia's newest budget card for local AI — here's the catch

24GB of old VRAM versus 16GB of new, low-power silicon — I ran the real math on what each one costs, up front and over a year.

Aliteq
Ravi Malhotra · Hardware Editor

Key point

The RTX 3090 has 24GB of GDDR6X at 936 GB/s bandwidth; the RTX 5060 Ti 16GB has 16GB of GDDR7 at 448 GB/s — the 3090 is faster and holds more.

Key point

The RTX 3090 draws up to 350W; the RTX 5060 Ti 16GB draws just 180W — nearly half.

Key point

Used RTX 3090s are running $600-800 for verified-working units; new RTX 5060 Ti 16GB cards are $490-570 street in August 2026.

Key point

24GB fits a 32B model at Q4 with room for context; 16GB fits comfortably up to about 12B-14B, and is tight-to-impossible for 32B.

Key point

The 3090 supports NVLink — two of them bridge to 48GB, enough to run a full 70B model at Q4.

Used RTX 3090 vs RTX 5060 Ti 16GB

Buy the used 3090 if you specifically need 24GB+ for 30B-class models or a future NVLink pair. Buy the new 5060 Ti 16GB if you're staying at 14B and under and want a warranty plus a much smaller…

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a 5-year-old GPU still beats nvidia's newest budget card for local AI — here's the catch

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