GLM-4 9B needs ~7.8 GB VRAM. RX 6600 8GB has 8.0 GB. With Q4_K_M quantization, expect ~22 tok/s.
Operating mode
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.
Select quantization to explore
Fit status
Runs with offload
Decode
21.9 tok/s
TTFT
8854 ms
Safe context
21K
Memory
7.8 GB / 8.0 GB
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.
Buy headroom, not only minimum fit
A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | A | Tight fit | 21.9 tok/s | 4829 ms | 21K |
| Coding | A | Runs with offload | 21.9 tok/s | 8854 ms | 21K |
| Agentic Coding | B | Runs with offload (needs ~0.3 GB host RAM) | 14.8 tok/s | 19079 ms | 21K |
| Reasoning | A | Runs with offload | 21.9 tok/s | 10463 ms | 21K |
| RAG | B | Runs with offload (needs ~0.3 GB host RAM) | 14.8 tok/s | 23848 ms | 21K |
Inference speed
Estimated decode speed (tokens/sec) for GLM-4 9B at Q4_K_M across popular GPUs and Apple Silicon, using the fastest local runtime per device. Fastest is RTX 5090 32GB at ~126 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? |
|---|---|---|---|---|
 RTX 5090 32GB | 32 GB | Q4_K_M | 126.0 | Fits |
| RTX 4090 24GB | 24 GB | Q4_K_M | 126.0 | Fits |
| RTX 3090 24GB | 24 GB | Q4_K_M | 126.0 | Fits |
RX 7900 XTX 24GB | 24 GB | Q4_K_M | 126.0 | Fits |
| RTX 4080 Super 16GB | 16 GB | Q4_K_M | 121.7 | Fits |
Mac Studio M3 Ultra 256GB | 256 GB | Q4_K_M | 111.0 | Fits |
Mac Studio M2 Ultra 128GB | 128 GB | Q4_K_M | 92.4 | Fits |
Mac Studio M1 Ultra 128GB | 128 GB | Q4_K_M | 87.7 | Fits |
| RTX 4070 12GB | 12 GB | Q4_K_M | 75.3 | Fits |
MacBook Pro M4 Max 128GB | 128 GB | Q4_K_M | 74.7 | Fits |
MacBook Pro M4 Max 64GB | 64 GB | Q4_K_M | 74.7 | Fits |
MacBook Pro M3 Max 64GB | 64 GB | Q4_K_M | 47.8 | Fits |
| RTX 3060 12GB | 12 GB | Q4_K_M | 47.3 | Fits |
MacBook Pro M1 Max 64GB | 64 GB | Q4_K_M | 43.8 | Fits |
MacBook Pro M4 Pro 48GB | 48 GB | Q4_K_M | 38.5 | Fits |
| RTX 4060 8GB | 8 GB | Q4_K_M | 36.4 | Offloads |
Estimates for single-stream decoding at Q4_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.
How GLM-4 9B (9B params) fits at each quantization level on RX 6600 8GB (8.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 3.5 GB | Low | A75 |
Q3_K_S | 3 | 4.4 GB | Low | A75 |
NVFP4Best for your GPU | 4 | 5.0 GB | Medium | A74 |
Q4_K_M | 4 | 5.5 GB | Medium | F0 |
Q5_K_M | 5 | 6.5 GB | High | F0 |
Q6_K | 6 | 7.4 GB | High | F0 |
Q8_0 | 8 | 9.6 GB | Very High | F0 |
F16 | 16 | 18.5 GB | Maximum | F0 |
Copy-paste commands to run GLM-4 9B on your machine.
Run
ollama run glm4Yes, RX 6600 8GB can run GLM-4 9B with a A grade (Runs with offload). Expected decode speed: 21.9 tok/s.
GLM-4 9B (9B parameters) requires approximately 7.8 GB of memory with Q4_K_M quantization.
The recommended quantization for GLM-4 9B is Q4_K_M, which balances quality and memory efficiency.
On RX 6600 8GB, GLM-4 9B achieves approximately 21.9 tokens per second decode speed with a time-to-first-token of 8854ms using Q4_K_M quantization.
For coding workloads, GLM-4 9B on RX 6600 8GB receives a A grade with 21.9 tok/s and 21K context.
On RX 6600 8GB, GLM-4 9B can safely use up to 21K tokens of context. The model's official context limit is 128K, but available memory constrains the safe maximum.
Buy headroom, not only minimum fit. A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/glm-4-9b-on-rx-6600-8gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
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