Can Falcon 7B Instruct run on RX 6900 XT 16GB?

YES — Runs Great

B67Good

Estimated from fit model

Falcon 7B Instruct needs ~6.9 GB VRAM. RX 6900 XT 16GB has 16.0 GB. With Q4_K_M quantization, expect ~75 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: MediumStack: 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, 75.1 tok/s, Runs well

6.9 GB required16.0 GB available

43% VRAM used

Fit status

Runs well

Decode

75.1 tok/s

TTFT

2578 ms

Safe context

Memory

6.9 GB / 16.0 GB

Memory breakdown

Weights4.3 GB

KV Cache0.1 GB

Runtime0.9 GB

Headroom1.6 GB

See how fast it feels

See how fast it feelsFalcon 7B Instruct on RX 6900 XT 16GB
1st promptCold start — includes initialization
>Solve: If a train travels at 60 mph for 2.5 hours, how far does it go?
Let me work through this step by step.

Given information:
  - Speed = 60 mph (miles per hour)
  - Time  = 2.5 hours

Formula: Distance = Speed x Time

Calculation:
  Distance = 60 mph x 2.5 h
           = 150 miles

The train travels 150 miles.

Double-check: at 60 mph the train covers 60 miles each hour. In half an hour it covers 30 miles. So in 2.5 hours: 60 + 60 + 30 = 150 miles. Confirmed.
2nd promptWarm — model ready, no init overhead
>What if the train stops for 20 minutes halfway?
The stop doesn't change the total distance covered while moving, but it affects total trip time.

Breakdown:
  - First half: 1.25 hours at 60 mph = 75 miles
  - Stop: 20 minutes (no distance)
  - Second half: 1.25 hours at 60 mph = 75 miles

Total distance: 150 miles (same)
Total time: 2.5 h + 0.33 h = 2.83 hours
Average speed: 150 / 2.83 = 53 mph

The distance stays the same but average speed drops to 53 mph because of the stop.
Estimated: 75.1 tok/s decode · 2.6s TTFT (warm) · 188 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	B	Runs well	75.1 tok/s	1406 ms	8K
Coding	B	Runs well	75.1 tok/s	2578 ms	8K
Agentic Coding	B	Runs well	75.1 tok/s	3750 ms	8K
Reasoning	B	Runs well	75.1 tok/s	3047 ms	8K
RAG	B	Runs well	75.1 tok/s	4688 ms	8K

Quantization options

How Falcon 7B Instruct (7B params) fits at each quantization level on RX 6900 XT 16GB (16.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	2.7 GB	Low	B63
Q3_K_S	3	3.4 GB	Low	B63
NVFP4	4

Get started

Copy-paste commands to run Falcon 7B Instruct on your machine.

Run

lms load falcon-7b-instruct && lms server start

Frequently asked questions

Can RX 6900 XT 16GB run Falcon 7B Instruct?

Yes, RX 6900 XT 16GB can run Falcon 7B Instruct with a B grade (Runs well). Expected decode speed: 75.1 tok/s.

How much VRAM does Falcon 7B Instruct need?

Falcon 7B Instruct (7B parameters) requires approximately 6.9 GB of memory with Q4_K_M quantization.

What is the best quantization for Falcon 7B Instruct?

The recommended quantization for Falcon 7B Instruct is Q4_K_M, which balances quality and memory efficiency.

What speed will Falcon 7B Instruct run at on RX 6900 XT 16GB?

On RX 6900 XT 16GB, Falcon 7B Instruct achieves approximately 75.1 tokens per second decode speed with a time-to-first-token of 2578ms using Q4_K_M quantization.

Can RX 6900 XT 16GB run Falcon 7B Instruct for coding?

For coding workloads, Falcon 7B Instruct on RX 6900 XT 16GB receives a B grade with 75.1 tok/s and 8K context.

What context window can Falcon 7B Instruct use on RX 6900 XT 16GB?

On RX 6900 XT 16GB, Falcon 7B Instruct can safely use up to 8K tokens of context. The model's official context limit is 8K, but available memory constrains the safe maximum.

See all results for RX 6900 XT 16GB See all hardware for Falcon 7B Instruct

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