Question 1

Can RTX 5090 Laptop 24GB run Granite Code 20B?

Accepted Answer

Yes, RTX 5090 Laptop 24GB can run Granite Code 20B with a C grade (Runs well). Expected decode speed: 52.9 tok/s.

Question 2

How much VRAM does Granite Code 20B need?

Accepted Answer

Granite Code 20B (20B parameters) requires approximately 18.9 GB of memory with Q4_K_M quantization.

Question 3

What is the best quantization for Granite Code 20B?

Accepted Answer

The recommended quantization for Granite Code 20B is Q4_K_M, which balances quality and memory efficiency.

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Tight fit	52.9 tok/s	5325 ms	8K
Chat	C	Runs well	52.9 tok/s	1997 ms	8K
Coding	C	Runs well	52.9 tok/s	3661 ms	8K
RAG	C	Tight fit	52.9 tok/s	6657 ms	8K
Reasoning	C	Runs well	52.9 tok/s	4327 ms	8K

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	7.8 GB	Low	D36
Q3_K_S	3	9.8 GB	Low	D38
NVFP4	4

Can RTX 5090 Laptop 24GB run Granite Code 20B?

Memory breakdown