Can stablelm 2 zephyr 1.6b run on Radeon Pro W7900 48GB?

YES — Runs Great

C40Usable

Estimated from fit model

stablelm 2 zephyr 1.6b needs ~6.9 GB VRAM. Radeon Pro W7900 48GB has 48.0 GB. With Q4_K_M quantization, expect ~22 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: HighStack: StandardBottleneck: Balanced

Operating mode

Choose the run profile you care about

Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.

Current mode

Balanced

Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 6.9 GB, 22.4 tok/s, Runs well

6.9 GB required48.0 GB available

14% VRAM used

Fit status

Runs well

Decode

22.4 tok/s

TTFT

8643 ms

Safe context

3.5M

Memory

6.9 GB / 48.0 GB

Memory breakdown

Weights1.0 GB

KV Cache0.2 GB

Runtime0.9 GB

Headroom4.8 GB

See how fast it feels

See how fast it feelsstablelm 2 zephyr 1.6b on Radeon Pro W7900 48GB
1st promptCold start — includes initialization
>What is local AI inference?
Local AI inference means running an AI language model directly on your own hardware — your laptop, desktop, or server — instead of sending requests to a remote cloud API.

When you run inference locally the model weights are loaded into your GPU or unified memory. Each token you generate requires reading those weights from memory, so memory bandwidth is the main bottleneck for decode speed.

Key benefits of running locally:
  - Full privacy: your prompts never leave your machine
  - No per-token cost or rate limits
  - Works offline once the model is downloaded
  - Latency depends only on your hardware
2nd promptWarm — model ready, no init overhead
>How much VRAM do I need?
It depends on the model size and quantization level. A rough rule of thumb:

  Model size     Q4 (4-bit)    Q8 (8-bit)    FP16
  7B params      ~4.3 GB       ~7.5 GB       ~14 GB
  13B params     ~7.9 GB       ~13.9 GB      ~26 GB
  70B params     ~42.7 GB      ~74.9 GB      ~140 GB

Most people use 4-bit quantization (Q4_K_M) which gives 90-95% of full quality at a fraction of the memory. A 24 GB GPU can comfortably run most 7B-13B models.
Estimated: 22.4 tok/s decode · 8.6s TTFT (warm) · 56 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

No major red flags

This recommendation has enough memory headroom and acceptable estimated speed for the selected workload.

Best improvement path

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	D	Runs well	22.4 tok/s	4714 ms	3.3M
Coding	C	Runs well	22.4 tok/s	8643 ms	3.5M
Agentic Coding	C	Runs well	22.4 tok/s	12571 ms	3.5M
Reasoning	C	Runs well	22.4 tok/s	10214 ms	3.5M
RAG	C	Runs well	22.4 tok/s	15714 ms	3.5M

Quantization options

How stablelm 2 zephyr 1.6b (1.600000023841858B params) fits at each quantization level on Radeon Pro W7900 48GB (48.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	0.6 GB	Low	C41
Q3_K_S	3	0.8 GB	Low	C41
NVFP4	4	0.9 GB	Medium	C41
Q4_K_M	4	1.0 GB	Medium	C41
Q5_K_M	5	1.2 GB	High	C41
Q6_K	6	1.3 GB	High	C41
Q8_0	8	1.7 GB	Very High	C41
F16Best for your GPU	16	3.3 GB	Maximum	C41

Get started

Copy-paste commands to run stablelm 2 zephyr 1.6b on your machine.

Run

lms load hf-second-state--stablelm-2-zephyr-1-6b-gguf && lms server start

Upgrade options

Hardware that runs stablelm 2 zephyr 1.6b well

MacBook Pro M4 Max 96GBBudget pick

96 GB Unified (+48)

Adds memory headroom for longer context windows and future model growth.22.4 tok/s decode

Adds memory headroom for longer context windows and future model growth.

~$2,499 MSRP

MacBook Pro M3 Max 128GBBest value

128 GB Unified (+80)

Adds memory headroom for longer context windows and future model growth.22.4 tok/s decode

Adds memory headroom for longer context windows and future model growth.

~$2,499 MSRP

Frequently asked questions

Can Radeon Pro W7900 48GB run stablelm 2 zephyr 1.6b?

Yes, Radeon Pro W7900 48GB can run stablelm 2 zephyr 1.6b with a C grade (Runs well). Expected decode speed: 22.4 tok/s.

How much VRAM does stablelm 2 zephyr 1.6b need?

stablelm 2 zephyr 1.6b (1.600000023841858B parameters) requires approximately 6.9 GB of memory with Q4_K_M quantization.

What is the best quantization for stablelm 2 zephyr 1.6b?

The recommended quantization for stablelm 2 zephyr 1.6b is Q4_K_M, which balances quality and memory efficiency.

What speed will stablelm 2 zephyr 1.6b run at on Radeon Pro W7900 48GB?

On Radeon Pro W7900 48GB, stablelm 2 zephyr 1.6b achieves approximately 22.4 tokens per second decode speed with a time-to-first-token of 8643ms using Q4_K_M quantization.

Can Radeon Pro W7900 48GB run stablelm 2 zephyr 1.6b for coding?

For coding workloads, stablelm 2 zephyr 1.6b on Radeon Pro W7900 48GB receives a C grade with 22.4 tok/s and 3.5M context.

What context window can stablelm 2 zephyr 1.6b use on Radeon Pro W7900 48GB?

On Radeon Pro W7900 48GB, stablelm 2 zephyr 1.6b can safely use up to 3.5M tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

See all results for Radeon Pro W7900 48GB See all hardware for stablelm 2 zephyr 1.6b

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<iframe src="https://willitrunai.com/embed/hf-second-state--stablelm-2-zephyr-1-6b-gguf-on-radeon-pro-w7900-48gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>

Preview:

Workload

Grade

Fit

Decode

TTFT

Context

Chat

Runs well

22.4 tok/s

4714 ms

3.3M

Coding

Runs well

22.4 tok/s

8643 ms

3.5M

Agentic Coding

Runs well

22.4 tok/s

12571 ms

3.5M

Reasoning

Runs well

22.4 tok/s

10214 ms

3.5M

RAG

Runs well

22.4 tok/s

15714 ms

3.5M

Quantization options

How stablelm 2 zephyr 1.6b (1.600000023841858B params) fits at each quantization level on Radeon Pro W7900 48GB (48.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	0.6 GB	Low	C41
Q3_K_S	3	0.8 GB	Low	C41
NVFP4	4	0.9 GB	Medium	C41
Q4_K_M	4	1.0 GB	Medium	C41
Q5_K_M	5	1.2 GB	High	C41
Q6_K	6	1.3 GB	High	C41
Q8_0	8	1.7 GB	Very High	C41
F16Best for your GPU	16	3.3 GB	Maximum	C41

Frequently asked questions

Can Radeon Pro W7900 48GB run stablelm 2 zephyr 1.6b?

Yes, Radeon Pro W7900 48GB can run stablelm 2 zephyr 1.6b with a C grade (Runs well). Expected decode speed: 22.4 tok/s.

How much VRAM does stablelm 2 zephyr 1.6b need?

stablelm 2 zephyr 1.6b (1.600000023841858B parameters) requires approximately 6.9 GB of memory with Q4_K_M quantization.

What is the best quantization for stablelm 2 zephyr 1.6b?

The recommended quantization for stablelm 2 zephyr 1.6b is Q4_K_M, which balances quality and memory efficiency.

What speed will stablelm 2 zephyr 1.6b run at on Radeon Pro W7900 48GB?

On Radeon Pro W7900 48GB, stablelm 2 zephyr 1.6b achieves approximately 22.4 tokens per second decode speed with a time-to-first-token of 8643ms using Q4_K_M quantization.

Can Radeon Pro W7900 48GB run stablelm 2 zephyr 1.6b for coding?

For coding workloads, stablelm 2 zephyr 1.6b on Radeon Pro W7900 48GB receives a C grade with 22.4 tok/s and 3.5M context.

What context window can stablelm 2 zephyr 1.6b use on Radeon Pro W7900 48GB?

On Radeon Pro W7900 48GB, stablelm 2 zephyr 1.6b can safely use up to 3.5M tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.