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URL: https://willitrunai.com/can-run/qwen-2.5-vl-72b-on-radeon-pro-w6800-32gb


Can Qwen 2.5 VL 72B run on Radeon Pro W6800 32GB?

YES — With Q2_K

A75Great
Estimated from fit model

Qwen 2.5 VL 72B needs ~37.1 GB VRAM. Radeon Pro W6800 32GB has 32.0 GB. With Q2_K quantization, expect ~5 tok/s.

Runtime: llama.cppCapacity: OffloadBandwidth: MediumStack: StandardBottleneck: Host offload
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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.

Qwen 2.5 VL 72B at Q4_K_M needs 52.9 GB — too much for Radeon Pro W6800 32GB (32.0 GB). Runs at Q2_K (37.1 GB) with low quality.
Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 52.9 GB, exceeds 32.0 GB available
52.9 GB required32.0 GB available
165% VRAM needed

20.9 GB over capacity — needs offload or smaller quantization

Fit status

Too heavy

Decode

2.0 tok/s

TTFT

96800 ms

Safe context

4K

Memory

52.9 GB / 32.0 GB

Offload

40%

Memory breakdown

Weights43.9 GB
KV Cache4.9 GB
Runtime0.9 GB
Headroom3.2 GB

See how fast it feels

With memory offload — actual speed may be lower
See how fast it feelsQwen 2.5 VL 72B on Radeon Pro W6800 32GB
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: 2.0 tok/s decode · 96.8s TTFT (warm) · 5 tok/s prefill

What limits this setup

It fits through host-memory offload, and offload is the main reason performance drops.

CPU or host-memory offload is active

About 10% of the working set spills out of accelerator memory, which usually hurts latency and sustained decode throughput.

Very little memory headroom

You can run the model, but there is not much room left for longer context, bigger batches, extra apps, or future model updates.

Best improvement path

Remove offload with more accelerator memory

Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.

Buy headroom, not only minimum fit

A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.

Increase host RAM if you keep offloading

This setup may need roughly 3.8 GB of extra host RAM just for the offloaded portion, before OS and other tools.

Performance by workload

WorkloadGradeFitDecodeTTFTContext
ChatFToo heavy2.0 tok/s52800 ms4K
CodingFToo heavy2.0 tok/s96800 ms4K
Agentic CodingFToo heavy2.0 tok/s140800 ms4K
ReasoningFToo heavy2.0 tok/s114400 ms4K
RAGFToo heavy2.0 tok/s176000 ms4K

Quantization options

How Qwen 2.5 VL 72B (72B params) fits at each quantization level on Radeon Pro W6800 32GB (32.0 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
28.1 GB
LowF0
Q3_K_S
3
35.3 GB
LowF0
NVFP4
4

Get started

Copy-paste commands to run Qwen 2.5 VL 72B on your machine.

Run

lms load Qwen2.5-VL-72B-Instruct && lms server start

Upgrade options

Hardware that runs Qwen 2.5 VL 72B well

Radeon Pro W7900 48GBBest value
48 GB VRAM (+16)864 GB/s (+352)
A
Makes the model fit on the accelerator instead of staying completely out of reach.7.2 tok/s decode

Makes the model fit on the accelerator instead of staying completely out of reach.

Raises estimated decode speed by about 260%.

~$3,999 MSRP

AMD Instinct MI350X 288GBBudget pick
288 GB VRAM (+256)8000 GB/s (+7488)
S
Makes the model fit on the accelerator instead of staying completely out of reach.144.6 tok/s decode

Makes the model fit on the accelerator instead of staying completely out of reach.

Removes host-memory offload, which is usually the single biggest latency and throughput win.

~$8,000 MSRP

AMD Instinct MI210 64GBAMD upgrade
64 GB VRAM (+32)1638 GB/s (+1126)
S
Makes the model fit on the accelerator instead of staying completely out of reach.27.6 tok/s decode

Makes the model fit on the accelerator instead of staying completely out of reach.

Removes host-memory offload, which is usually the single biggest latency and throughput win.

~$10,000 MSRP

👁 NVIDIA
NVIDIA H100 80GBBiggest leap
80 GB VRAM (+48)3350 GB/s (+2838)
S
Makes the model fit on the accelerator instead of staying completely out of reach.69.7 tok/s decode

Makes the model fit on the accelerator instead of staying completely out of reach.

Removes host-memory offload, which is usually the single biggest latency and throughput win.

~$40,000 MSRP

Frequently asked questions

See all results for Radeon Pro W6800 32GBSee all hardware for Qwen 2.5 VL 72B
40.3 GB
Medium
F0
Q4_K_M
4
43.9 GB
MediumF0
Q5_K_M
5
51.8 GB
HighF0
Q6_K
6
59.0 GB
HighF0
Q8_0
8
77.0 GB
Very HighF0
F16
16
147.6 GB
MaximumF0