Can DeepSeek Coder V2 16B run on RX 7900 XT 20GB?

YES — Runs Great

S85Excellent

Estimated from fit model

DeepSeek Coder V2 16B needs ~16.0 GB VRAM. RX 7900 XT 20GB has 20.0 GB. With Q4_K_M quantization, expect ~117 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: HighStack: StandardBottleneck: Balanced

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.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 16.0 GB, 117.1 tok/s, Runs well

16.0 GB required20.0 GB available

80% VRAM used

Fit status

Runs well

Decode

117.1 tok/s

TTFT

1653 ms

Safe context

36K

Memory

16.0 GB / 20.0 GB

Memory breakdown

Weights9.8 GB

KV Cache3.3 GB

Runtime0.9 GB

Headroom2.0 GB

See how fast it feels

See how fast it feelsDeepSeek Coder V2 16B on RX 7900 XT 20GB
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: 117.1 tok/s decode · 1.7s TTFT (warm) · 293 tok/s prefill

What limits this setup

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.

Best improvement path

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	S	Runs well	117.1 tok/s	902 ms	36K
Coding	S	Runs well	117.1 tok/s	1653 ms	36K
Agentic Coding	A	Runs with offload	117.1 tok/s	2405 ms	36K
Reasoning	S	Runs well	117.1 tok/s	1954 ms	36K
RAG	A	Runs with offload	117.1 tok/s	3006 ms	36K

Quantization options

How DeepSeek Coder V2 16B (16B params) fits at each quantization level on RX 7900 XT 20GB (20.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	6.2 GB	Low	A76
Q3_K_S	3	7.8 GB	Low	A78
NVFP4	4	9.0 GB	Medium	A79
Q4_K_M	4	9.8 GB	Medium	A79
Q5_K_M	5	11.5 GB	High	A79
Q6_KBest for your GPU	6	13.1 GB	High	A79
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

Your hardware

More models your RX 7900 XT 20GB can run

Model	Params	Grade	Decode
Qwen3-Coder 30B A3B Instruct	30.5B	A	40.7 tok/s
Qwen 3.5 27B	27B	A	18.3 tok/s
Qwen 3.6 27B	27B	S	17.3 tok/s
Qwen3-VL 30B A3B Instruct	30B	A	43.3 tok/s
Magistral Small 2507	24B	S	35.2 tok/s

Frequently asked questions

Can RX 7900 XT 20GB run DeepSeek Coder V2 16B?

Yes, RX 7900 XT 20GB can run DeepSeek Coder V2 16B with a S grade (Runs well). Expected decode speed: 117.1 tok/s.

How much VRAM does DeepSeek Coder V2 16B need?

DeepSeek Coder V2 16B (16B parameters) requires approximately 16.0 GB of memory with Q4_K_M quantization.

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

The recommended quantization for DeepSeek Coder V2 16B is Q4_K_M, which balances quality and memory efficiency.

What speed will DeepSeek Coder V2 16B run at on RX 7900 XT 20GB?

On RX 7900 XT 20GB, DeepSeek Coder V2 16B achieves approximately 117.1 tokens per second decode speed with a time-to-first-token of 1653ms using Q4_K_M quantization.

Can RX 7900 XT 20GB run DeepSeek Coder V2 16B for coding?

For coding workloads, DeepSeek Coder V2 16B on RX 7900 XT 20GB receives a S grade with 117.1 tok/s and 36K context.

What context window can DeepSeek Coder V2 16B use on RX 7900 XT 20GB?

On RX 7900 XT 20GB, DeepSeek Coder V2 16B can safely use up to 36K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.

See all results for RX 7900 XT 20GB See all hardware for DeepSeek Coder V2 16B

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Preview:

Workload

Grade

Fit

Decode

TTFT

Context

Chat

Runs well

117.1 tok/s

902 ms

36K

Coding

Runs well

117.1 tok/s

1653 ms

36K

Agentic Coding

Runs with offload

117.1 tok/s

2405 ms

36K

Reasoning

Runs well

117.1 tok/s

1954 ms

36K

RAG

Runs with offload

117.1 tok/s

3006 ms

36K

Quantization options

How DeepSeek Coder V2 16B (16B params) fits at each quantization level on RX 7900 XT 20GB (20.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	6.2 GB	Low	A76
Q3_K_S	3	7.8 GB	Low	A78
NVFP4	4	9.0 GB	Medium	A79
Q4_K_M	4	9.8 GB	Medium	A79
Q5_K_M	5	11.5 GB	High	A79
Q6_KBest for your GPU	6	13.1 GB	High	A79
Q8_0	8	17.1 GB	Very High	F0
F16	16	32.8 GB	Maximum	F0

Model

Params

Grade

Decode

Capabilities

Qwen3-Coder 30B A3B Instruct

30.5B

40.7 tok/s

Qwen 3.5 27B

27B

18.3 tok/s

Qwen 3.6 27B

27B

17.3 tok/s

Qwen3-VL 30B A3B Instruct

30B

43.3 tok/s

Magistral Small 2507

24B

35.2 tok/s

Frequently asked questions

Can RX 7900 XT 20GB run DeepSeek Coder V2 16B?

Yes, RX 7900 XT 20GB can run DeepSeek Coder V2 16B with a S grade (Runs well). Expected decode speed: 117.1 tok/s.

How much VRAM does DeepSeek Coder V2 16B need?

DeepSeek Coder V2 16B (16B parameters) requires approximately 16.0 GB of memory with Q4_K_M quantization.

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

The recommended quantization for DeepSeek Coder V2 16B is Q4_K_M, which balances quality and memory efficiency.

What speed will DeepSeek Coder V2 16B run at on RX 7900 XT 20GB?

On RX 7900 XT 20GB, DeepSeek Coder V2 16B achieves approximately 117.1 tokens per second decode speed with a time-to-first-token of 1653ms using Q4_K_M quantization.

Can RX 7900 XT 20GB run DeepSeek Coder V2 16B for coding?

For coding workloads, DeepSeek Coder V2 16B on RX 7900 XT 20GB receives a S grade with 117.1 tok/s and 36K context.

What context window can DeepSeek Coder V2 16B use on RX 7900 XT 20GB?

On RX 7900 XT 20GB, DeepSeek Coder V2 16B can safely use up to 36K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.