Can WizardMath 7B run on RX 580 8GB?

YES — With Offload

A70Great

Estimated from fit model

WizardMath 7B needs ~7.9 GB VRAM. RX 580 8GB has 8.0 GB. With Q4_K_M quantization, expect ~26 tok/s.

Runtime: llama.cppCapacity: OffloadBandwidth: 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) — 7.9 GB, 27.7 tok/s, Runs with offload

7.9 GB required8.0 GB available

99% VRAM used

Fit status

Runs with offload

Decode

27.7 tok/s

TTFT

6986 ms

Safe context

Memory

7.9 GB / 8.0 GB

Memory breakdown

Weights4.3 GB

KV Cache2.0 GB

Runtime0.9 GB

Headroom0.8 GB

See how fast it feels

See how fast it feelsWizardMath 7B on RX 580 8GB
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: 27.7 tok/s decode · 7.0s TTFT (warm) · 69 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

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.

Older PCIe generation

PCIe 3.0 is workable, but it compounds the penalty when you offload heavily or try to scale across multiple cards.

Best improvement path

Buy headroom, not only minimum fit

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

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	A	Tight fit	25.8 tok/s	4096 ms	4K
Coding	A	Runs with offload	25.8 tok/s	7510 ms	4K
Agentic Coding	F	Too heavy	11.8 tok/s	23786 ms	4K
Reasoning	A	Runs with offload	25.8 tok/s	8875 ms	4K
RAG	F	Too heavy	11.8 tok/s	29732 ms	4K

Quantization options

How WizardMath 7B (7B params) fits at each quantization level on RX 580 8GB (8.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	2.7 GB	Low	A74
Q3_K_S	3	3.4 GB	Low	A74
NVFP4	4

Get started

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

Run

docker run --rm -it ghcr.io/ggerganov/llama.cpp:full \
  --hf-repo "WizardLMTeam/WizardMath-7B-V1.1" \
  --hf-file "WizardMath-7B-V1.1-Q4_K_M.gguf" \
  -c 4096 -ngl 99

Your hardware

More models your RX 580 8GB can run

Model	Params	Grade	Decode	Capabilities
Qwen 3.5 9B	9B	A	11.1 tok/s
Qwen 3 8B	8B	A	14.4 tok/s

Frequently asked questions

Can RX 580 8GB run WizardMath 7B?

Yes, RX 580 8GB can run WizardMath 7B with a A grade (Runs with offload). Expected decode speed: 25.8 tok/s.

How much VRAM does WizardMath 7B need?

WizardMath 7B (7B parameters) requires approximately 7.9 GB of memory with Q4_K_M quantization.

What is the best quantization for WizardMath 7B?

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

What speed will WizardMath 7B run at on RX 580 8GB?

On RX 580 8GB, WizardMath 7B achieves approximately 25.8 tokens per second decode speed with a time-to-first-token of 7510ms using Q4_K_M quantization.

Can RX 580 8GB run WizardMath 7B for coding?

For coding workloads, WizardMath 7B on RX 580 8GB receives a A grade with 25.8 tok/s and 4K context.

What context window can WizardMath 7B use on RX 580 8GB?

On RX 580 8GB, WizardMath 7B can safely use up to 4K tokens of context. The model's official context limit is 4K, but available memory constrains the safe maximum.

What should I upgrade first if WizardMath 7B feels slow on RX 580 8GB?

Buy headroom, not only minimum fit. A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.

See all results for RX 580 8GB See all hardware for WizardMath 7B

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