Can Falcon 40B Instruct run on RTX 6000 Ada 48GB?

YES — Runs Great

A74Great

Estimated from fit model

Falcon 40B Instruct needs ~36.6 GB VRAM. RTX 6000 Ada 48GB has 48.0 GB. With Q5_K_M quantization, expect ~30 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: HighStack: BasicBottleneck: 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

Q5_K_M (High quality) — 36.6 GB, 30.3 tok/s, Runs well

36.6 GB required48.0 GB available

76% VRAM used

Fit status

Runs well

Decode

30.3 tok/s

TTFT

6385 ms

Safe context

Memory

36.6 GB / 48.0 GB

Memory breakdown

Weights28.8 GB

KV Cache1.8 GB

Runtime1.2 GB

Headroom4.8 GB

See how fast it feels

See how fast it feelsFalcon 40B Instruct on RTX 6000 Ada 48GB
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: 30.3 tok/s decode · 6.4s TTFT (warm) · 76 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	A	Runs well	30.3 tok/s	3483 ms	8K
Coding	A	Runs well	30.3 tok/s	6385 ms	8K
Agentic Coding	A	Runs well	30.3 tok/s	9288 ms	8K
Reasoning	A	Runs well	30.3 tok/s	7546 ms	8K
RAG	A	Runs well	30.3 tok/s	11610 ms	8K

Inference speed

Falcon 40B Instruct inference speed — tokens per second by GPU & Mac

Estimated decode speed (tokens/sec) for Falcon 40B Instruct at Q5_K_M across popular GPUs and Apple Silicon, including multi-GPU rigs, using the fastest local runtime per device. Fastest is 2× RX 7900 XTX 24GB at ~45 tok/s. Speed is memory-bandwidth bound, so cards that fit the whole model in VRAM run far faster than ones that offload to system RAM.

GPU / Mac	Memory	Quant	Speed (tok/s)	Fits?
2× RX 7900 XTX 24GB	48 GB	Q5_K_M	45.3	Fits
2× RTX 4090 24GB	48 GB	Q5_K_M	41.3	Fits
2× RTX 3090 24GB	48 GB	Q5_K_M	35.3	Fits
4× RTX 3060 12GB	48 GB	Q5_K_M	31.1	Fits
RTX 5090 32GB	32 GB	Q5_K_M	29.4	Heavy offload
MacBook Pro M4 Max 128GB	128 GB	Q5_K_M	23.1	Fits
MacBook Pro M4 Max 64GB	64 GB	Q5_K_M	23.1	Tight
Mac Studio M3 Ultra 256GB	256 GB	Q5_K_M	21.5	Fits
Mac Studio M2 Ultra 128GB	128 GB	Q5_K_M	17.9	Fits
Mac Studio M1 Ultra 128GB	128 GB	Q5_K_M	16.9	Fits
MacBook Pro M4 Pro 48GB	48 GB	Q5_K_M	12.9	Offloads
RTX 4090 24GB	24 GB	Q5_K_M	10.5	Too big
RX 7900 XTX 24GB	24 GB	Q5_K_M	9.5	Too big
MacBook Pro M3 Max 64GB	64 GB	Q5_K_M	9.2	Tight
RTX 3090 24GB	24 GB	Q5_K_M	9.0	Too big
MacBook Pro M1 Max 64GB	64 GB	Q5_K_M	8.5	Tight
RTX 4080 Super 16GB	16 GB	Q5_K_M	3.7	Too big
RTX 4070 12GB	12 GB	Q5_K_M	2.2	Too big
RTX 3060 12GB	12 GB	Q5_K_M	2.0	Too big
RTX 4060 8GB	8 GB	Q5_K_M	2.0	Too big

Estimates for single-stream decoding at Q5_K_M; real tokens/sec varies with prompt length, context, batch size, and runtime build. Prompt processing (prefill) is faster than the decode figures shown here.

Quantization options

How Falcon 40B Instruct (40B params) fits at each quantization level on RTX 6000 Ada 48GB (48.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	15.6 GB	Low	B66
Q3_K_S	3	19.6 GB	Low	B67
NVFP4	4	22.4 GB	Medium	B68
Q4_K_M	4	24.4 GB	Medium	B69
Q5_K_M	5	28.8 GB	High	B69
Q6_KBest for your GPU	6	32.8 GB	High	B68
Q8_0	8	42.8 GB	Very High	F0
F16	16	82.0 GB	Maximum	F0

Get started

Copy-paste commands to run Falcon 40B Instruct on your machine.

Run

docker run --rm -it ghcr.io/ggerganov/llama.cpp:full \
  --hf-repo "tiiuae/falcon-40b-instruct" \
  --hf-file "falcon-40b-instruct-Q5_K_M.gguf" \
  -c 4096 -ngl 99

Your hardware

More models your RTX 6000 Ada 48GB can run

Model	Params	Grade	Decode
Qwen 2.5 VL 72B	72B	A	11.1 tok/s
Qwen3-Coder-Next	80B	A	28.5 tok/s
Llama 3.3 70B	70B	A	11.9 tok/s
Kimi Linear 48B A3B	48B	S	26.9 tok/s
Llama 3.1 70B	70B	B	11.9 tok/s

Frequently asked questions

Can RTX 6000 Ada 48GB run Falcon 40B Instruct?

Yes, RTX 6000 Ada 48GB can run Falcon 40B Instruct with a A grade (Runs well). Expected decode speed: 30.3 tok/s.

How much VRAM does Falcon 40B Instruct need?

Falcon 40B Instruct (40B parameters) requires approximately 36.6 GB of memory with Q5_K_M quantization.

What is the best quantization for Falcon 40B Instruct?

The recommended quantization for Falcon 40B Instruct is Q5_K_M, which balances quality and memory efficiency.

What speed will Falcon 40B Instruct run at on RTX 6000 Ada 48GB?

On RTX 6000 Ada 48GB, Falcon 40B Instruct achieves approximately 30.3 tokens per second decode speed with a time-to-first-token of 6385ms using Q5_K_M quantization.

Can RTX 6000 Ada 48GB run Falcon 40B Instruct for coding?

For coding workloads, Falcon 40B Instruct on RTX 6000 Ada 48GB receives a A grade with 30.3 tok/s and 8K context.

What context window can Falcon 40B Instruct use on RTX 6000 Ada 48GB?

On RTX 6000 Ada 48GB, Falcon 40B 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 RTX 6000 Ada 48GB See all hardware for Falcon 40B Instruct

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