IBM
Granite 4.2 30B
IBM·30B·Granite·128K ctx·2026-08
Model size→Hardware requirement→Actual fit
Granite 4.2 30B needs ~19.2–35.6 GB of VRAM depending on quantization. The bar is what it needs; the marker is the card's VRAM. Speed figures below are planning estimates.
8 GB
RTX 4060 · 3060 Ti
19.28
Q4_K_M · Est. ~3 tok/sSlow · CPU offload
12 GB
RTX 4070 · 3060 12G
19.212
Q4_K_M · Est. ~5 tok/sSlow · CPU offload
16 GB
RTX 4080 · M-series 16G
19.216
Q4_K_M · Est. ~8 tok/sSlow · CPU offload
24 GB
RTX 4090 · 3090
22.524
Q5_K_M · Est. ~61 tok/sComfortable
48 GB
A6000 · 2×24G
35.648
Q8_0 · Est. ~32 tok/sComfortable
02 — Quantizations
QuantFile sizeEst. VRAM
Q4_K_M18 GB19.2 GB
Q5_K_M21.3 GB22.5 GB
Q8_034.4 GB35.6 GB
03 — Runtimes & use
llama.cpp · Ollama · LM Studio
General
Memory and speed figures are planning estimates, not measured benchmarks. Memory includes a fixed allowance for KV cache and runtime overhead. Long-context prompts push VRAM use above the numbers shown here.