OpenChat 7B needs ~8.3 GB VRAM. RX 7700 XT 12GB has 12.0 GB. With Q4_K_M quantization, expect ~61 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 well
Decode
65.3 tok/s
TTFT
2967 ms
Safe context
8K
Memory
8.3 GB / 12.0 GB
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.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | B | Runs well | 65.3 tok/s | 1618 ms | 8K |
| Coding | B | Runs well | 60.7 tok/s | 3189 ms | 8K |
| Agentic Coding | C | Tight fit | 65.3 tok/s | 4315 ms | 8K |
| Reasoning | B | Runs well | 65.3 tok/s | 3506 ms | 8K |
| RAG | C | Tight fit | 65.3 tok/s | 5394 ms | 8K |
How OpenChat 7B (7B params) fits at each quantization level on RX 7700 XT 12GB (12.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 2.7 GB | Low | C51 |
Q3_K_S | 3 | 3.4 GB | Low | C52 |
NVFP4 | 4 |
Copy-paste commands to run OpenChat 7B on your machine.
Run
ollama run openchatYes, RX 7700 XT 12GB can run OpenChat 7B with a B grade (Runs well). Expected decode speed: 60.7 tok/s.
OpenChat 7B (7B parameters) requires approximately 8.3 GB of memory with Q4_K_M quantization.
The recommended quantization for OpenChat 7B is Q4_K_M, which balances quality and memory efficiency.
On RX 7700 XT 12GB, OpenChat 7B achieves approximately 60.7 tokens per second decode speed with a time-to-first-token of 3189ms using Q4_K_M quantization.
For coding workloads, OpenChat 7B on RX 7700 XT 12GB receives a B grade with 60.7 tok/s and 8K context.
On RX 7700 XT 12GB, OpenChat 7B can safely use up to 8K tokens of context. The model's official context limit is 8K, but available memory constrains the safe maximum.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/openchat-7b-on-rx-7700-xt-12gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
Preview:
| Medium |
| C52 |
Q4_K_M | 4 | 4.3 GB | Medium | C53 |
Q5_K_M | 5 | 5.0 GB | High | C54 |
Q6_K | 6 | 5.7 GB | High | C54 |
Q8_0Best for your GPU | 8 | 7.5 GB | Very High | C54 |
F16 | 16 | 14.3 GB | Maximum | F0 |