How much VRAM does gemma 2b need?

gemma 2b (2B parameters) requires approximately 5.8 GB of memory with Q4_K_M quantization.

What is the best quantization for gemma 2b?

The recommended quantization for gemma 2b is Q4_K_M, which balances quality and memory efficiency.

Can it run?

Yes, Mac mini M2 24GB can run gemma 2b with a C grade (Runs well). Expected decode speed: 53.3 tok/s.

CUsable

Runs well

Using Q4_K_M in Ollama

Capabilities:

Fit status

Runs well

Decode

53.3 tok/s

TTFT

3634 ms

Safe context

48K

Memory

5.8 GB / 17.3 GB

Weights1.2 GB

KV Cache0.8 GB

Runtime1.2 GB

Headroom2.6 GB

Workload	Grade	Fit	Decode	TTFT	Context
Agentic Coding	C	Runs well	53.3 tok/s	5285 ms	95K
Chat	C	Runs well	53.3 tok/s	1982 ms	24K
Coding	C	Runs well	53.3 tok/s	3634 ms	48K
RAG	C	Runs well	53.3 tok/s	6607 ms	95K
Reasoning	C	Runs well	53.3 tok/s	4294 ms	48K

How gemma 2b (2B params) fits at each quantization level on Mac mini M2 24GB (17.3 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	0.8 GB	Low	D31
Q3_K_S	3	1.0 GB	Low	D31
NVFP4	4

Upgrade options

RX 7900 XT 20GBBudget pick

C393.4 tok/s decode

~$899 MSRP

MacBook Pro M1 Pro 32GBBest value

C106.6 tok/s decode

~$1,999 MSRP