Can StarCoder2 15B run on AMD Instinct MI250X 128GB?

YES — Runs Great

C48Usable

Estimated from fit model

StarCoder2 15B needs ~25.7 GB VRAM. AMD Instinct MI250X 128GB has 128.0 GB. With Q5_K_M quantization, expect ~210 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

Q5_K_M (High quality) — 25.7 GB, 210.0 tok/s, Runs well

25.7 GB required128.0 GB available

20% VRAM used

Fit status

Runs well

Decode

210.0 tok/s

TTFT

922 ms

Safe context

16K

Memory

25.7 GB / 128.0 GB

Memory breakdown

Weights10.8 GB

KV Cache1.2 GB

Runtime0.9 GB

Headroom12.8 GB

See how fast it feels

See how fast it feelsStarCoder2 15B on AMD Instinct MI250X 128GB
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: 210.0 tok/s decode · 922ms TTFT (warm) · 525 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	C	Runs well	210.0 tok/s	503 ms	16K
Coding	C	Runs well	210.0 tok/s	922 ms	16K
Agentic Coding	C	Runs well	210.0 tok/s	1341 ms	16K
Reasoning	C	Runs well	210.0 tok/s	1090 ms	16K
RAG	C	Runs well	210.0 tok/s	1676 ms	16K

Quantization options

How StarCoder2 15B (15B params) fits at each quantization level on AMD Instinct MI250X 128GB (128.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.9 GB	Low	D40
Q3_K_S	3	7.4 GB	Low	D40
NVFP4	4	8.4 GB	Medium	D40
Q4_K_M	4	9.2 GB	Medium	D40
Q5_K_M	5	10.8 GB	High	D40
Q6_K	6	12.3 GB	High	D40
Q8_0	8	16.1 GB	Very High	C40
F16Best for your GPU	16	30.7 GB	Maximum	C42

Get started

Copy-paste commands to run StarCoder2 15B on your machine.

Run

docker run --rm -it ghcr.io/ggerganov/llama.cpp:full \
  --hf-repo "bigcode/starcoder2-15b" \
  --hf-file "starcoder2-15b-Q5_K_M.gguf" \
  -c 4096 -ngl 99

Frequently asked questions

Can AMD Instinct MI250X 128GB run StarCoder2 15B?

Yes, AMD Instinct MI250X 128GB can run StarCoder2 15B with a C grade (Runs well). Expected decode speed: 210.0 tok/s.

How much VRAM does StarCoder2 15B need?

StarCoder2 15B (15B parameters) requires approximately 25.7 GB of memory with Q5_K_M quantization.

What is the best quantization for StarCoder2 15B?

The recommended quantization for StarCoder2 15B is Q5_K_M, which balances quality and memory efficiency.

What speed will StarCoder2 15B run at on AMD Instinct MI250X 128GB?

On AMD Instinct MI250X 128GB, StarCoder2 15B achieves approximately 210.0 tokens per second decode speed with a time-to-first-token of 922ms using Q5_K_M quantization.

Can AMD Instinct MI250X 128GB run StarCoder2 15B for coding?

For coding workloads, StarCoder2 15B on AMD Instinct MI250X 128GB receives a C grade with 210.0 tok/s and 16K context.

What context window can StarCoder2 15B use on AMD Instinct MI250X 128GB?

On AMD Instinct MI250X 128GB, StarCoder2 15B can safely use up to 16K tokens of context. The model's official context limit is 16K, but available memory constrains the safe maximum.

See all results for AMD Instinct MI250X 128GB See all hardware for StarCoder2 15B

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