Can falcon mamba 7b instruct Q4 K M run on RX 6700 XT 12GB?

YES — Runs Great

C53Usable

Estimated from fit model

falcon mamba 7b instruct Q4 K M needs ~7.2 GB VRAM. RX 6700 XT 12GB has 12.0 GB. With Q4_K_M quantization, expect ~54 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: LowStack: 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) — 7.2 GB, 53.8 tok/s, Runs well

7.2 GB required12.0 GB available

60% VRAM used

Fit status

Runs well

Decode

53.8 tok/s

TTFT

3600 ms

Safe context

110K

Memory

7.2 GB / 12.0 GB

Memory breakdown

Weights4.3 GB

KV Cache0.8 GB

Runtime0.9 GB

Headroom1.2 GB

See how fast it feels

See how fast it feelsfalcon mamba 7b instruct Q4 K M on RX 6700 XT 12GB
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: 53.8 tok/s decode · 3.6s TTFT (warm) · 134 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	C	Runs well	53.8 tok/s	1964 ms	110K
Coding	C	Runs well	53.8 tok/s	3600 ms	110K
Agentic Coding	C	Runs well	53.8 tok/s	5236 ms	110K
Reasoning	C	Runs well	53.8 tok/s	4255 ms	110K
RAG	C	Runs well	53.8 tok/s	6545 ms	110K

Quantization options

How falcon mamba 7b instruct Q4 K M (7B params) fits at each quantization level on RX 6700 XT 12GB (12.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	2.7 GB	Low	C49
Q3_K_S	3	3.4 GB	Low	C50
NVFP4	4	3.9 GB	Medium	C50
Q4_K_M	4	4.3 GB	Medium	C51
Q5_K_M	5	5.0 GB	High	C52
Q6_K	6	5.7 GB	High	C52
Q8_0Best for your GPU	8	7.5 GB	Very High	C52
F16	16	14.3 GB	Maximum	F0

Get started

Copy-paste commands to run falcon mamba 7b instruct Q4 K M on your machine.

Run

lms load hf-tiiuae--falcon-mamba-7b-instruct-q4-k-m-gguf && lms server start

Frequently asked questions

Can RX 6700 XT 12GB run falcon mamba 7b instruct Q4 K M?

Yes, RX 6700 XT 12GB can run falcon mamba 7b instruct Q4 K M with a C grade (Runs well). Expected decode speed: 53.8 tok/s.

How much VRAM does falcon mamba 7b instruct Q4 K M need?

falcon mamba 7b instruct Q4 K M (7B parameters) requires approximately 7.2 GB of memory with Q4_K_M quantization.

What is the best quantization for falcon mamba 7b instruct Q4 K M?

The recommended quantization for falcon mamba 7b instruct Q4 K M is Q4_K_M, which balances quality and memory efficiency.

What speed will falcon mamba 7b instruct Q4 K M run at on RX 6700 XT 12GB?

On RX 6700 XT 12GB, falcon mamba 7b instruct Q4 K M achieves approximately 53.8 tokens per second decode speed with a time-to-first-token of 3600ms using Q4_K_M quantization.

Can RX 6700 XT 12GB run falcon mamba 7b instruct Q4 K M for coding?

For coding workloads, falcon mamba 7b instruct Q4 K M on RX 6700 XT 12GB receives a C grade with 53.8 tok/s and 110K context.

What context window can falcon mamba 7b instruct Q4 K M use on RX 6700 XT 12GB?

On RX 6700 XT 12GB, falcon mamba 7b instruct Q4 K M can safely use up to 110K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

See all results for RX 6700 XT 12GB See all hardware for falcon mamba 7b instruct Q4 K M

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