Can DeepSeek Coder V2 16B run on RX 6700 XT 12GB?

YES — With NVFP4

B63Good

Estimated from fit model

DeepSeek Coder V2 16B needs ~14.4 GB VRAM. RX 6700 XT 12GB has 12.0 GB. With NVFP4 quantization, expect ~29 tok/s.

Runtime: llama.cppCapacity: OffloadBandwidth: LowStack: StandardBottleneck: Host offload

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.

DeepSeek Coder V2 16B at Q4_K_M needs 15.2 GB — too much for RX 6700 XT 12GB (12.0 GB). Runs at NVFP4 (14.4 GB) with medium quality. 3 quantization levels fit.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 15.2 GB, exceeds 12.0 GB available

15.2 GB required12.0 GB available

127% VRAM needed

3.2 GB over capacity — needs offload or smaller quantization

Fit status

Too heavy

Decode

22.3 tok/s

TTFT

8663 ms

Safe context

Memory

15.2 GB / 12.0 GB

Offload

20%

Memory breakdown

Weights9.8 GB

KV Cache3.3 GB

Runtime0.9 GB

Headroom1.2 GB

See how fast it feels

With memory offload — actual speed may be lower

See how fast it feelsDeepSeek Coder V2 16B on RX 6700 XT 12GB
1st promptCold start — includes initialization
>Write a Python function to sort a list
Here's a Python function that sorts a list using quicksort:

def quicksort(arr):
    if len(arr) <= 1:
        return arr
    pivot = arr[len(arr) // 2]
    left   = [x for x in arr if x < pivot]
    middle = [x for x in arr if x == pivot]
    right  = [x for x in arr if x > pivot]
    return quicksort(left) + middle + quicksort(right)

# Example usage
numbers = [3, 6, 8, 10, 1, 2, 1]
print(quicksort(numbers))  # [1, 1, 2, 3, 6, 8, 10]

The algorithm picks a pivot, partitions the list into smaller, equal, and larger elements, then recursively sorts each partition and concatenates the results.
2nd promptWarm — model ready, no init overhead
>Now add type hints and a docstring
def quicksort(arr: list[int]) -> list[int]:
    """Sort a list using the quicksort algorithm.

    Args:
        arr: List of integers to sort.

    Returns:
        A new sorted list.
    """
    if len(arr) <= 1:
        return arr
    pivot = arr[len(arr) // 2]
    left   = [x for x in arr if x < pivot]
    middle = [x for x in arr if x == pivot]
    right  = [x for x in arr if x > pivot]
    return quicksort(left) + middle + quicksort(right)

Added type hints for the input and return type, plus a Google-style docstring.
Estimated: 22.3 tok/s decode · 8.7s TTFT (warm) · 56 tok/s prefill

What limits this setup

It fits through host-memory offload, and offload is the main reason performance drops.

CPU or host-memory offload is active

About 20% of the working set spills out of accelerator memory, which usually hurts latency and sustained decode throughput.

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.

Best improvement path

Remove offload with more accelerator memory

Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.

Buy headroom, not only minimum fit

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

Increase host RAM if you keep offloading

This setup may need roughly 1.5 GB of extra host RAM just for the offloaded portion, before OS and other tools.

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	B	Very compromised (needs ~1.1 GB host RAM)	28.5 tok/s	3708 ms	4K
Coding	F	Too heavy	22.3 tok/s	8663 ms	4K
Agentic Coding	F	Too heavy	14.8 tok/s	19066 ms	4K
Reasoning	F	Too heavy	22.3 tok/s	10238 ms	4K
RAG	F	Too heavy	14.8 tok/s	23833 ms	4K

Quantization options

How DeepSeek Coder V2 16B (16B params) fits at each quantization level on RX 6700 XT 12GB (12.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	6.2 GB	Low	A81
Q3_K_SBest for your GPU	3	7.8 GB	Low	A80
NVFP4	4	9.0 GB	Medium	F0
Q4_K_M	4	9.8 GB	Medium	F0
Q5_K_M	5	11.5 GB	High	F0
Q6_K	6	13.1 GB	High	F0
Q8_0	8	17.1 GB	Very High	F0
F16	16	32.8 GB	Maximum	F0

Get started

Copy-paste commands to run DeepSeek Coder V2 16B on your machine.

Run

lms load DeepSeek-Coder-V2-Lite-Instruct && lms server start

Opciones de mejora

Hardware que ejecuta bien DeepSeek Coder V2 16B

RX 7600 XT 16GBOpción económica

16 GB VRAM (+4)

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.40.7 tok/s decodificación

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.

Elimina el offload a memoria del sistema, que suele ser la mayor mejora individual en latencia y throughput.

~$329 MSRP

RX 9060 XT 16GBMejor relación calidad-precio

16 GB VRAM (+4)

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.49.2 tok/s decodificación

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.

Elimina el offload a memoria del sistema, que suele ser la mayor mejora individual en latencia y throughput.

~$349 MSRP

RX 9070 16GBMejora AMD

16 GB VRAM (+4)640 GB/s (+256)

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.96.8 tok/s decodificación

Hace que el modelo quepa en el acelerador en lugar de seguir fuera de alcance.

Elimina el offload a memoria del sistema, que suele ser la mayor mejora individual en latencia y throughput.

~$479 MSRP

Frequently asked questions

Can RX 6700 XT 12GB run DeepSeek Coder V2 16B?

Yes, RX 6700 XT 12GB can run DeepSeek Coder V2 16B at NVFP4 quantization (Very compromised (needs ~1.5 GB host RAM)). The recommended Q4_K_M requires 15.2 GB which exceeds available memory, but at NVFP4 it needs only 14.4 GB. Expected decode speed: 28.7 tok/s.

How much VRAM does DeepSeek Coder V2 16B need?

DeepSeek Coder V2 16B (16B parameters) requires approximately 15.2 GB at Q4_K_M quantization. On RX 6700 XT 12GB, it fits at NVFP4 using 14.4 GB.

What is the best quantization for DeepSeek Coder V2 16B?

The recommended quantization is Q4_K_M, but on RX 6700 XT 12GB the best fitting quantization is NVFP4, which uses 14.4 GB.

What speed will DeepSeek Coder V2 16B run at on RX 6700 XT 12GB?

On RX 6700 XT 12GB, DeepSeek Coder V2 16B achieves approximately 28.7 tokens per second decode speed with a time-to-first-token of 6757ms using NVFP4 quantization.

Can RX 6700 XT 12GB run DeepSeek Coder V2 16B for coding?

For coding workloads, DeepSeek Coder V2 16B on RX 6700 XT 12GB receives a F grade with 22.3 tok/s and 4K context.

What context window can DeepSeek Coder V2 16B use on RX 6700 XT 12GB?

On RX 6700 XT 12GB, DeepSeek Coder V2 16B can safely use up to 5K tokens of context at NVFP4 quantization. The model's official context limit is 131K, but available memory constrains the safe maximum.

What should I upgrade first if DeepSeek Coder V2 16B feels slow on RX 6700 XT 12GB?

Remove offload with more accelerator memory. Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.

See all results for RX 6700 XT 12GB See all hardware for DeepSeek Coder V2 16B

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