Can I Run IBM Granite 4.2 on RTX 4060 Laptop (8 GB VRAM, 16 GB RAM)?

作者： Jakub Rusinowski · 最后更新： 2026年9月11日

Yes, but it is tight

Yes, but it is tight — Granite 4.2 8B at Q5_K_M needs about 7.6 GB of the 8 GB usable on RTX 4060 Laptop (8 GB VRAM, 16 GB RAM), leaving only ~0.4 GB before the runtime starts swapping. Expect ~30.5 tok/s (estimated), with room for about 8,192 tokens of context.

Confidence: low · Recommended quantization: Q5_K_M · Estimated speed: ~30.5 tok/s

Buy This HardwareIntel Arc B570 10GB — 10 GB VRAM · 150 W board power Deploy in the Cloud NowRTX 4090 on RunPod — from $0.34/hr · rate checked 2026-07

or compare on Vast.ai from $0.35/hr (typical low · varies)

As an Amazon Associate we earn from qualifying purchases. Cloud GPU links are referral links — we may earn a commission at no extra cost to you.

RTX 4060 Laptop (8 GB VRAM, 16 GB RAM) — what it gives a model

Usable memory for models	8 GB
Memory bandwidth	272 GB/s
Form factor	Laptop
Operating system	Windows or Linux
Memory upgradeable	Yes
Price	$1,099 (lib/data/laptops.ts (street price), checked 2026-07-06)

IBM Granite 4.2 on RTX 4060 Laptop (8 GB VRAM, 16 GB RAM): memory by quantization

Quant	Memory needed	Fits 8 GB?	Max context	Est. speed	Download
F16	17.9 GB	✗ No	—	—	16 GB
Q8_0	10.4 GB	✗ No	—	—	8.5 GB
Q6_K	8.5 GB	✗ No	—	—	6.6 GB
Q5_K_M	7.6 GB	✓ Yes	8K	~30.5 tok/s	5.7 GB
Q4_K_M	6.8 GB	✓ Yes	16K	~34.8 tok/s	4.8 GB
Q3_K_M	5.4 GB	✓ Yes	16K	~46 tok/s	3.4 GB
Q2_K	4.6 GB	✓ Yes	32K	~55.8 tok/s	2.6 GB

Which IBM Granite 4.2 sizes fit

Variant	Needs at Q4_K_M	Fits?	Est. speed
Granite 4.2 30B	20.7 GB	✗ Too large	—
Granite 4.2 8B	6.8 GB	✓ Fits	~34.8 tok/s
Granite 4.2 3B	3.5 GB	✓ Fits	~75.9 tok/s

What to watch out for

Only ~0.4 GB of headroom at Q5_K_M: a longer context or a second application can push this into swapping.
1 larger variant of IBM Granite 4.2 does not fit and would need CPU offload or different hardware.
This model does not publish its full attention configuration, so the KV-cache share of these figures is inferred from its parameter count rather than computed exactly.

RTX 4060 laptop limitations

8 GB VRAM limits you to 7–8B models at Q4 with a short context.
System RAM is usually upgradeable on this class of laptop even though VRAM is not.

Recommended setup

Ollama or llama.cpp (CUDA/ROCm) — vLLM if you need concurrent serving

How these numbers are calculated

Memory need = quantized weights + KV cache at 8,192 tokens (f16) + 0.8 GB runtime overhead.
8 GB of VRAM on the NVIDIA GeForce RTX 4060 at 272 GB/s.
16 GB of system RAM available for CPU offload when a model exceeds VRAM.
Throughput is a memory-bandwidth roofline estimate, not a measurement. It is labelled "estimated" everywhere it appears.
KV cache is inferred from the parameter count because this model does not publish its full attention configuration.

FAQ