Can I Run IBM Granite 4.2 on NVIDIA GeForce RTX 5090?

Autor: Jakub Rusinowski · Ostatnia aktualizacja: 11 września 2026

Yes, comfortably — you'll have ~13.9 GB of headroom running Granite 4.2 30B at Q4_K_M (18.1125 GB, ~68 tok/s (est.)) with room for up to 32K context.

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NVIDIA GeForce RTX 5090 32GB
32 GB VRAM · 575 W board power
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NVIDIA GeForce RTX 5090 Specs

VRAM32 GB
Memory Bandwidth1792 GB/s

Granite 4.2 30B on the NVIDIA GeForce RTX 5090: VRAM by quantization

QuantVRAM neededFits 32 GB?Max context
F1661.7 GB✗ No
Q8_033.6 GB✗ No
Q6_K26.3 GB✓ Yes16K
Q5_K_M23 GB✓ Yes32K
Q4_K_M19.8 GB✓ Yes32K
Q3_K_M14.5 GB✓ Yes64K
Q2_K11.6 GB✓ Yes64K

VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 32 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.

IBM Granite 4.2 Sizes That Fit the NVIDIA GeForce RTX 5090

Granite 4.2 30BQ4_K_M · 18.1125 GB · ~68 tok/s (est.)
Granite 4.2 8BQ4_K_M · 4.83 GB · ~173 tok/s (est.)
Granite 4.2 3BQ4_K_M · 1.81125 GB · ~270 tok/s (est.)
Buy vs. rent IBM Granite 4.2
Buy the GPU
~$1,999
NVIDIA GeForce RTX 5090 · MSRP
Rent by the hour
from $0.34/hr
RTX 4090 (24 GB) class

At 2 hrs/day, buying (~$1,999) beats renting at $0.34/hr after about 8.2 years.

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Rent on RunPod →
Vast.ai $0.35/hr · typical low · varies
Rent on Vast.ai →

Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.

FAQ

Can I run IBM Granite 4.2 on the NVIDIA GeForce RTX 5090?

Yes, comfortably — you'll have ~13.9 GB of headroom running Granite 4.2 30B at Q4_K_M (18.1125 GB, ~68 tok/s (est.)) with room for up to 32K context.

What's the best IBM Granite 4.2 size for the NVIDIA GeForce RTX 5090?

Granite 4.2 30B at Q4_K_M quantization (18.1125 GB), estimated ~68 tokens/sec, up to 32K context.

Every IBM Granite 4.2 size on the NVIDIA GeForce RTX 5090

SizeVRAMVerdictSpeed
Granite 4.2 30B18.1 GBRuns~68 tok/s
Granite 4.2 8B4.8 GBRuns~173 tok/s
Granite 4.2 3B1.8 GBRuns~270 tok/s

IBM Granite 4.2 on Other GPUs

Popular Models on the NVIDIA GeForce RTX 5090

VRAM Tier

Troubleshooting

Buying Guide

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