local intelligence

can it run

Can the RTX 4090 (24GB, used) run phi4 14B?

YES

Comfortably. 24GB of memory against a 12GB working set leaves headroom for context, the OS, and anything else you're running.

~51–84 tok/s

weights 9.1GB + KV cache 0.78GB at 4k context vs ~24GB usable → full. 9.9 GB needed of 24 GB usable — headroom for context

computed roofline: 1008 GB/s × 0.46–0.76 efficiency window / 9.1GB (Q4_K_M) — bands, never points.

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Specs

model file9.1GB (GGUF Q4_K_M)
minimum memory12GB working set
this machine24GB GDDR6X
params14B
licensemit
price$2000

Run it

model files: hugging face ↗

easy run: ollama pull phi4:14b

runs with: ollama · llama.cpp · koboldcpp · lm studio

Alternatives

ASUS ExpertCenter Pro ET900N G3 (GB300) — this model on the biggest machine

rtx-5090 — the next step up from this machine's GPU

Buy

eBay (used) ↗ · Amazon (new) ↗

2026-09-17 · ← full hardware catalog · prices verified at source, may drift