Can StarCoder2 15B run on RTX A4500 20GB?

YES — Runs Great

B56Good

Estimated from fit model

StarCoder2 15B needs ~15.2 GB VRAM. RTX A4500 20GB has 20.0 GB. With Q5_K_M quantization, expect ~52 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: MediumStack: BasicBottleneck: 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) — 15.2 GB, 51.5 tok/s, Runs well

15.2 GB required20.0 GB available

76% VRAM used

Fit status

Runs well

Decode

51.5 tok/s

TTFT

3762 ms

Safe context

16K

Memory

15.2 GB / 20.0 GB

Memory breakdown

Weights10.8 GB

KV Cache1.2 GB

Runtime1.2 GB

Headroom2.0 GB

See how fast it feels

See how fast it feelsStarCoder2 15B on RTX A4500 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: 51.5 tok/s decode · 3.8s TTFT (warm) · 129 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	B	Runs well	51.5 tok/s	2052 ms	16K
Coding	B	Runs well	51.5 tok/s	3762 ms	16K
Agentic Coding	C	Tight fit	51.5 tok/s	5471 ms	16K
Reasoning	B	Runs well	51.5 tok/s	4445 ms	16K
RAG	C	Tight fit	51.5 tok/s	6839 ms	16K

Quantization options

How StarCoder2 15B (15B params) fits at each quantization level on RTX A4500 20GB (20.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.9 GB	Low	C49
Q3_K_S	3	7.4 GB	Low	C50
NVFP4	4	8.4 GB	Medium	C51
Q4_K_M	4	9.2 GB	Medium	C52
Q5_K_M	5	10.8 GB	High	C52
Q6_K	6	12.3 GB	High	C52
Q8_0Best for your GPU	8	16.1 GB	Very High	C51
F16	16	30.7 GB	Maximum	F0

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

Upgrade options

Hardware that runs StarCoder2 15B well

RTX 4090 24GBBudget pick

24 GB VRAM (+4)1008 GB/s (+368)

Raises estimated decode speed by about 53%.79 tok/s decode

Raises estimated decode speed by about 53%.

~$1,599 MSRP

RTX 3090 Ti 24GBBest value

24 GB VRAM (+4)1008 GB/s (+368)

Raises estimated decode speed by about 43%.73.8 tok/s decode

Raises estimated decode speed by about 43%.

~$1,999 MSRP

NVIDIA A30 24GBNVIDIA upgrade

24 GB VRAM (+4)933 GB/s (+293)

Raises estimated decode speed by about 46%.75 tok/s decode

Raises estimated decode speed by about 46%.

~$5,500 MSRP

Frequently asked questions

Can RTX A4500 20GB run StarCoder2 15B?

Yes, RTX A4500 20GB can run StarCoder2 15B with a B grade (Runs well). Expected decode speed: 51.5 tok/s.

How much VRAM does StarCoder2 15B need?

StarCoder2 15B (15B parameters) requires approximately 15.2 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 RTX A4500 20GB?

On RTX A4500 20GB, StarCoder2 15B achieves approximately 51.5 tokens per second decode speed with a time-to-first-token of 3762ms using Q5_K_M quantization.

Can RTX A4500 20GB run StarCoder2 15B for coding?

For coding workloads, StarCoder2 15B on RTX A4500 20GB receives a B grade with 51.5 tok/s and 16K context.

What context window can StarCoder2 15B use on RTX A4500 20GB?

On RTX A4500 20GB, 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 RTX A4500 20GB See all hardware for StarCoder2 15B

Embed this result▼

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<iframe src="https://willitrunai.com/embed/starcoder2-15b-on-rtx-a4500-20gb" 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

51.5 tok/s

2052 ms

16K

Coding

Runs well

51.5 tok/s

3762 ms

16K

Agentic Coding

Tight fit

51.5 tok/s

5471 ms

16K

Reasoning

Runs well

51.5 tok/s

4445 ms

16K

RAG

Tight fit

51.5 tok/s

6839 ms

16K

Quantization options

How StarCoder2 15B (15B params) fits at each quantization level on RTX A4500 20GB (20.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.9 GB	Low	C49
Q3_K_S	3	7.4 GB	Low	C50
NVFP4	4	8.4 GB	Medium	C51
Q4_K_M	4	9.2 GB	Medium	C52
Q5_K_M	5	10.8 GB	High	C52
Q6_K	6	12.3 GB	High	C52
Q8_0Best for your GPU	8	16.1 GB	Very High	C51
F16	16	30.7 GB	Maximum	F0

Frequently asked questions

Can RTX A4500 20GB run StarCoder2 15B?

Yes, RTX A4500 20GB can run StarCoder2 15B with a B grade (Runs well). Expected decode speed: 51.5 tok/s.

How much VRAM does StarCoder2 15B need?

StarCoder2 15B (15B parameters) requires approximately 15.2 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 RTX A4500 20GB?

On RTX A4500 20GB, StarCoder2 15B achieves approximately 51.5 tokens per second decode speed with a time-to-first-token of 3762ms using Q5_K_M quantization.

Can RTX A4500 20GB run StarCoder2 15B for coding?

For coding workloads, StarCoder2 15B on RTX A4500 20GB receives a B grade with 51.5 tok/s and 16K context.

What context window can StarCoder2 15B use on RTX A4500 20GB?

On RTX A4500 20GB, 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.