Meta Llama 3.1 8B Instruct needs ~7.5 GB VRAM. RX 6650 XT 8GB has 8.0 GB. With Q4_K_M quantization, expect ~29 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
Tight fit
Decode
29.3 tok/s
TTFT
6616 ms
Safe context
24K
Memory
7.5 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 | C | Tight fit | 29.3 tok/s | 3609 ms | 24K |
| Coding | C | Tight fit | 29.3 tok/s | 6616 ms | 24K |
| Agentic Coding | D | Runs with offload (needs ~0.3 GB host RAM) | 19.5 tok/s | 14416 ms | 24K |
| Reasoning | C | Tight fit | 29.3 tok/s | 7819 ms | 24K |
| RAG | D | Runs with offload (needs ~0.3 GB host RAM) | 19.5 tok/s | 18020 ms | 24K |
How Meta Llama 3.1 8B Instruct (8B params) fits at each quantization level on RX 6650 XT 8GB (8.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 3.1 GB | Low | C54 |
Q3_K_S | 3 | 3.9 GB | Low | C54 |
NVFP4 | 4 | 4.5 GB | Medium | C53 |
Q4_K_MBest for your GPU | 4 | 4.9 GB | Medium | C53 |
Q5_K_M | 5 | 5.8 GB | High | F0 |
Q6_K | 6 | 6.6 GB | High | F0 |
Q8_0 | 8 | 8.6 GB | Very High | F0 |
F16 | 16 | 16.4 GB | Maximum | F0 |
Copy-paste commands to run Meta Llama 3.1 8B Instruct on your machine.
Run
lms load hf-bartowski--meta-llama-3-1-8b-instruct-gguf && lms server startOpciones de mejora
Sube la velocidad estimada de decodificación alrededor de un 41%.
Añade margen de memoria para más contexto y para que el modelo envejezca mejor.
~$349 MSRP
Sube la velocidad estimada de decodificación alrededor de un 81%.
Añade margen de memoria para más contexto y para que el modelo envejezca mejor.
~$449 MSRP
Sube la velocidad estimada de decodificación alrededor de un 40%.
Añade margen de memoria para más contexto y para que el modelo envejezca mejor.
~$479 MSRP
Yes, RX 6650 XT 8GB can run Meta Llama 3.1 8B Instruct with a C grade (Tight fit). Expected decode speed: 29.3 tok/s.
Meta Llama 3.1 8B Instruct (8B parameters) requires approximately 7.5 GB of memory with Q4_K_M quantization.
The recommended quantization for Meta Llama 3.1 8B Instruct is Q4_K_M, which balances quality and memory efficiency.
On RX 6650 XT 8GB, Meta Llama 3.1 8B Instruct achieves approximately 29.3 tokens per second decode speed with a time-to-first-token of 6616ms using Q4_K_M quantization.
For coding workloads, Meta Llama 3.1 8B Instruct on RX 6650 XT 8GB receives a C grade with 29.3 tok/s and 24K context.
On RX 6650 XT 8GB, Meta Llama 3.1 8B Instruct can safely use up to 24K tokens of context. The model's official context limit is —, 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/hf-bartowski--meta-llama-3-1-8b-instruct-gguf-on-rx-6650-xt-8gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
Preview: