Can CodeGeeX 4 9B run on RX 6800 XT 16GB?

YES — Runs Great

A80Great

Estimated from fit model

CodeGeeX 4 9B needs ~8.6 GB VRAM. RX 6800 XT 16GB has 16.0 GB. With Q4_K_M quantization, expect ~57 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: MediumStack: 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) — 8.6 GB, 57.1 tok/s, Runs well

8.6 GB required16.0 GB available

54% VRAM used

Fit status

Runs well

Decode

57.1 tok/s

TTFT

3389 ms

Safe context

131K

Memory

8.6 GB / 16.0 GB

Memory breakdown

Weights5.5 GB

KV Cache0.6 GB

Runtime0.9 GB

Headroom1.6 GB

See how fast it feels

See how fast it feelsCodeGeeX 4 9B on RX 6800 XT 16GB
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: 57.1 tok/s decode · 3.4s TTFT (warm) · 143 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	A	Runs well	57.1 tok/s	1849 ms	131K
Coding	A	Runs well	57.1 tok/s	3389 ms	131K
Agentic Coding	A	Runs well	57.1 tok/s	4930 ms	131K
Reasoning	A	Runs well	57.1 tok/s	4005 ms	131K
RAG	A	Runs well	57.1 tok/s	6162 ms	131K

Quantization options

How CodeGeeX 4 9B (9B params) fits at each quantization level on RX 6800 XT 16GB (16.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	3.5 GB	Low	A75
Q3_K_S	3	4.4 GB	Low	A76
NVFP4	4	5.0 GB	Medium	A77
Q4_K_M	4	5.5 GB	Medium	A77
Q5_K_M	5	6.5 GB	High	A78
Q6_K	6	7.4 GB	High	A79
Q8_0Best for your GPU	8	9.6 GB	Very High	A79
F16	16	18.5 GB	Maximum	F0

Get started

Copy-paste commands to run CodeGeeX 4 9B on your machine.

Run

docker run --rm -it ghcr.io/ggerganov/llama.cpp:full \
  --hf-repo "THUDM/codegeex4-all-9b" \
  --hf-file "codegeex4-all-9b-Q4_K_M.gguf" \
  -c 4096 -ngl 99

Your hardware

More models your RX 6800 XT 16GB can run

Model	Params	Grade	Decode
Qwen 3 14B	14B	S	36.3 tok/s
Phi-4-reasoning-plus 14B	14.7B	S	34.4 tok/s
GPT-OSS 20B	21B	A	33.2 tok/s
Ministral 3 14B	14B	S	36.1 tok/s
Codestral 2 25.08	22B	A	12.1 tok/s

Frequently asked questions

Can RX 6800 XT 16GB run CodeGeeX 4 9B?

Yes, RX 6800 XT 16GB can run CodeGeeX 4 9B with a A grade (Runs well). Expected decode speed: 57.1 tok/s.

How much VRAM does CodeGeeX 4 9B need?

CodeGeeX 4 9B (9B parameters) requires approximately 8.6 GB of memory with Q4_K_M quantization.

What is the best quantization for CodeGeeX 4 9B?

The recommended quantization for CodeGeeX 4 9B is Q4_K_M, which balances quality and memory efficiency.

What speed will CodeGeeX 4 9B run at on RX 6800 XT 16GB?

On RX 6800 XT 16GB, CodeGeeX 4 9B achieves approximately 57.1 tokens per second decode speed with a time-to-first-token of 3389ms using Q4_K_M quantization.

Can RX 6800 XT 16GB run CodeGeeX 4 9B for coding?

For coding workloads, CodeGeeX 4 9B on RX 6800 XT 16GB receives a A grade with 57.1 tok/s and 131K context.

What context window can CodeGeeX 4 9B use on RX 6800 XT 16GB?

On RX 6800 XT 16GB, CodeGeeX 4 9B can safely use up to 131K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.

See all results for RX 6800 XT 16GB See all hardware for CodeGeeX 4 9B

Embed this result▼

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<iframe src="https://willitrunai.com/embed/codegeex-4-9b-on-rx-6800-xt-16gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>

Preview:

Workload

Grade

Fit

Decode

TTFT

Context

Chat

Runs well

57.1 tok/s

1849 ms

131K

Coding

Runs well

57.1 tok/s

3389 ms

131K

Agentic Coding

Runs well

57.1 tok/s

4930 ms

131K

Reasoning

Runs well

57.1 tok/s

4005 ms

131K

RAG

Runs well

57.1 tok/s

6162 ms

131K

Quant

Bits

VRAM

Quality

Fit

Q2_K

3.5 GB

Low

A75

Q3_K_S

4.4 GB

Low

A76

NVFP4

5.0 GB

Medium

A77

Q4_K_M

5.5 GB

Medium

A77

Q5_K_M

6.5 GB

High

A78

Q6_K

7.4 GB

High

A79

Q8_0Best for your GPU

9.6 GB

Very High

A79

F16

18.5 GB

Maximum

Model

Params

Grade

Decode

Capabilities

Qwen 3 14B

14B

36.3 tok/s

Phi-4-reasoning-plus 14B

14.7B

34.4 tok/s

GPT-OSS 20B

21B

33.2 tok/s

Ministral 3 14B

14B

36.1 tok/s

Codestral 2 25.08

22B

12.1 tok/s

Frequently asked questions

Can RX 6800 XT 16GB run CodeGeeX 4 9B?

Yes, RX 6800 XT 16GB can run CodeGeeX 4 9B with a A grade (Runs well). Expected decode speed: 57.1 tok/s.

How much VRAM does CodeGeeX 4 9B need?

CodeGeeX 4 9B (9B parameters) requires approximately 8.6 GB of memory with Q4_K_M quantization.

What is the best quantization for CodeGeeX 4 9B?

The recommended quantization for CodeGeeX 4 9B is Q4_K_M, which balances quality and memory efficiency.

What speed will CodeGeeX 4 9B run at on RX 6800 XT 16GB?

On RX 6800 XT 16GB, CodeGeeX 4 9B achieves approximately 57.1 tokens per second decode speed with a time-to-first-token of 3389ms using Q4_K_M quantization.

Can RX 6800 XT 16GB run CodeGeeX 4 9B for coding?

For coding workloads, CodeGeeX 4 9B on RX 6800 XT 16GB receives a A grade with 57.1 tok/s and 131K context.

What context window can CodeGeeX 4 9B use on RX 6800 XT 16GB?

On RX 6800 XT 16GB, CodeGeeX 4 9B can safely use up to 131K tokens of context. The model's official context limit is 131K, but available memory constrains the safe maximum.