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AMD RX 6700 XT (12GB)

The AMD RX 6700 XT (12GB) provides 12 GB of memory with 384 GB/s bandwidth, supporting local inference via ROCm and Vulkan acceleration.

Memory

12 GB

Usable Memory Ceiling

12 GB

Bandwidth

384 GB/s

Max Inference Class

14B Models (Q4)

TDP

230W

VRAM Scaling by Context Length

Estimated memory requirements as context length increases. Curves crossing above the reference line indicate Out of Memory (OOM).

Gemma 3 270M (0.27B)ChatGLM2-6B (6B)Yi-9B (9B)K2 Horizon MoVA 36B A4B (36B (4B active))

Precision:

Best Models to Run on AMD RX 6700 XT (12GB)

Inference throughput, memory compatibility, and generation speeds for open-weights LLMs on AMD RX 6700 XT (12GB).

Sort by:

Context:

KV Cache:

GPUs:

RankModelParametersPrecisionTPS (Approx.)TTFTCan Run

#100

Phi-4 Reasoning Plus

14B

INT4

24 tok/s

~7.0s

#109

Gemma 4 12B

11.95B

INT4

29 tok/s

~5.5s

#113

Qwen3.5-9B

9B

INT4
Q8

53 tok/s

30 tok/s

~3.8s

~4.2s

#118

K2 Horizon 7B

7B

INT4
Q8

66 tok/s

40 tok/s

~3.0s

~3.0s

#128

NVIDIA Nemotron 3 Nano 30B-A3B

3.5B (30B active)

INT4
Q8
FP16

17 tok/s

10 tok/s

5 tok/s

~12.0s

~12.1s

~13.2s

#132

Qwen3.5-4B

4B

INT4
Q8
FP16

100 tok/s

64 tok/s

36 tok/s

~1.8s

~1.8s

~1.8s

#146

Granite 4.2 8B

8B

INT4
Q8

59 tok/s

34 tok/s

~3.4s

~3.7s

#150

Gemma 4 E4B

8B

INT4
Q8

59 tok/s

34 tok/s

~3.4s

~3.7s

#158

GLM-4V

9B

INT4

38 tok/s

~3.8s

#160

Phi-4

14B

INT4

36 tok/s

~5.9s

#169

OLMo 3 7B Think

7B

INT4
Q8

46 tok/s

31 tok/s

~3.0s

~3.3s

#172

DeepSeek-R1 14B

14B

INT4

38 tok/s

~5.9s

#173

Ministral 3 14B

14B

INT4

24 tok/s

~7.0s

#177

Gemma 3 12B

12B

INT4

42 tok/s

~5.1s

#182

Ministral 3 8B

8B

INT4
Q8

42 tok/s

26 tok/s

~3.4s

~4.0s

#183

Qwen3.5-2B

2B

INT4
Q8
FP16

152 tok/s

107 tok/s

65 tok/s

~932 ms

~935 ms

~941 ms

#184

MiniCPM5-2B

2B

INT4
Q8
FP16

152 tok/s

107 tok/s

65 tok/s

~932 ms

~935 ms

~941 ms

#185

Qwen2.5-14B

14B

INT4

36 tok/s

~5.9s

#188

Gemma 4 E2B

5.1B

INT4
Q8
FP16

84 tok/s

53 tok/s

26 tok/s

~2.2s

~2.2s

~2.6s

#189

Qwen3-4B

4B

INT4
Q8
FP16

100 tok/s

64 tok/s

36 tok/s

~1.8s

~1.8s

~1.8s

Inference Capacity

Maximum model parameter class runnable by weight precision.

Context:

4-bit

Q4

14B Models

8-bit

Q8

8B Models

16-bit

FP16

3B Models

Fine-Tuning Capacity

Hardware capacity for local training and adapter fine-tuning.

Context Length:

QLoRA

4-bit

14B Models

LoRA

16-bit

8B Models

Full Parameter Training

1B Models

Workload Recommendations

Guidance for optimal precision and operational ceilings on AMD RX 6700 XT (12GB).

Inference Sweet Spot

Optimal for 8B models across extended context (32k+). 14B models fit comfortably at Q4 precision with standard context.

Bandwidth & Speed Profile

With 384 GB/s aggregate bandwidth, batch size 1 inference operates in a memory-bandwidth bound regime. Generates approximately 85 tok/s on an 8B Q4 model and 10 tok/s on a 70B Q4 model.

Frequently Asked Questions