Can Yi Coder 1.5B Chat run on RTX 5070 12GB?

YES — Runs Great

C44Usable

Estimated from fit model

Yi Coder 1.5B Chat needs ~3.2 GB VRAM. RTX 5070 12GB has 12.0 GB. With Q4_K_M quantization, expect ~29 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) — 3.2 GB, 28.5 tok/s, Runs well

3.2 GB required12.0 GB available

27% VRAM used

Fit status

Runs well

Decode

28.5 tok/s

TTFT

6793 ms

Safe context

818K

Memory

3.2 GB / 12.0 GB

Memory breakdown

Weights0.9 GB

KV Cache0.2 GB

Runtime0.9 GB

Headroom1.2 GB

See how fast it feels

See how fast it feelsYi Coder 1.5B Chat on RTX 5070 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: 28.5 tok/s decode · 6.8s TTFT (warm) · 71 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	28.5 tok/s	3705 ms	719K
Coding	C	Runs well	28.5 tok/s	6793 ms	818K
Agentic Coding	C	Runs well	28.5 tok/s	9881 ms	818K
Reasoning	C	Runs well	21.0 tok/s	10895 ms	818K
RAG	C	Runs well	28.5 tok/s	12351 ms	818K

Quantization options

How Yi Coder 1.5B Chat (1.5B params) fits at each quantization level on RTX 5070 12GB (12.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	0.6 GB	Low	C47
Q3_K_S	3	0.7 GB	Low	C47
NVFP4	4	0.8 GB	Medium	C47
Q4_K_M	4	0.9 GB	Medium	C47
Q5_K_M	5	1.1 GB	High	C47
Q6_K	6	1.2 GB	High	C47
Q8_0	8	1.6 GB	Very High	C48
F16Best for your GPU	16	3.1 GB	Maximum	C50

Get started

Copy-paste commands to run Yi Coder 1.5B Chat on your machine.

Run

lms load hf-maziyarpanahi--yi-coder-1-5b-chat-gguf && lms server start

Frequently asked questions

Can RTX 5070 12GB run Yi Coder 1.5B Chat?

Yes, RTX 5070 12GB can run Yi Coder 1.5B Chat with a C grade (Runs well). Expected decode speed: 28.5 tok/s.

How much VRAM does Yi Coder 1.5B Chat need?

Yi Coder 1.5B Chat (1.5B parameters) requires approximately 3.2 GB of memory with Q4_K_M quantization.

What is the best quantization for Yi Coder 1.5B Chat?

The recommended quantization for Yi Coder 1.5B Chat is Q4_K_M, which balances quality and memory efficiency.

What speed will Yi Coder 1.5B Chat run at on RTX 5070 12GB?

On RTX 5070 12GB, Yi Coder 1.5B Chat achieves approximately 28.5 tokens per second decode speed with a time-to-first-token of 6793ms using Q4_K_M quantization.

Can RTX 5070 12GB run Yi Coder 1.5B Chat for coding?

For coding workloads, Yi Coder 1.5B Chat on RTX 5070 12GB receives a C grade with 28.5 tok/s and 818K context.

What context window can Yi Coder 1.5B Chat use on RTX 5070 12GB?

On RTX 5070 12GB, Yi Coder 1.5B Chat can safely use up to 818K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

See all results for RTX 5070 12GB See all hardware for Yi Coder 1.5B Chat

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