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URL: https://willitrunai.com/can-run/leanstral-119b-a6b-on-a16-64gb


Can Leanstral 119B A6B run on NVIDIA A16 64GB?

NO — Won't Fit

F0Won't run
Estimated from fit model

Leanstral 119B A6B needs ~90.2 GB but NVIDIA A16 64GB only has 64.0 GB. Try a smaller quantization or lighter model.

Runtime: vLLMCapacity: No fitBandwidth: MediumStack: OptimizedBottleneck: Memory capacity
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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) — 90.2 GB, exceeds 64.0 GB available
90.2 GB required64.0 GB available
141% VRAM needed

26.2 GB over capacity — needs offload or smaller quantization

Fit status

Too heavy

Decode

5.2 tok/s

TTFT

37267 ms

Safe context

4K

Memory

90.2 GB / 64.0 GB

Offload

30%

Memory breakdown

Weights72.6 GB
KV Cache8.8 GB
Runtime2.4 GB
Headroom6.4 GB

See how fast it feels

With memory offload — actual speed may be lower
See how fast it feelsLeanstral 119B A6B on NVIDIA A16 64GB
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: 5.2 tok/s decode · 37.3s TTFT (warm) · 13 tok/s prefill

What limits this setup

Usable VRAM is the main blocker for this model.

Not enough usable memory

The model needs 90.2 GB, but this setup only exposes 64.0 GB of usable VRAM.

Best improvement path

Add more VRAM headroom

The first useful upgrade is more dedicated VRAM so you can fit the model without shrinking context or dropping to a much lower quant.

Performance by workload

WorkloadGradeFitDecodeTTFTContext
ChatFToo heavy5.8 tok/s18298 ms4K
CodingFToo heavy5.2 tok/s37267 ms4K
Agentic CodingFToo heavy4.3 tok/s65929 ms4K
ReasoningFToo heavy5.2 tok/s44043 ms4K
RAGFToo heavy4.3 tok/s82411 ms4K

Quantization options

How Leanstral 119B A6B (119B params) fits at each quantization level on NVIDIA A16 64GB (64.0 GB usable).

QuantBitsVRAMQualityFit
Q2_KBest for your GPU
2
46.4 GB
LowA84
Q3_K_S
3
58.3 GB
LowF0

Upgrade options

Hardware that runs Leanstral 119B A6B well

👁 NVIDIA
NVIDIA H200 141GBBudget pick
141 GB VRAM (+77)4800 GB/s (+4200)
S
Makes the model fit on the accelerator instead of staying completely out of reach.88.4 tok/s decode

Makes the model fit on the accelerator instead of staying completely out of reach.

Removes host-memory offload, which is usually the single biggest latency and throughput win.

~$30,000 MSRP

👁 NVIDIA
NVIDIA H200 PCIe 141GBBest value
141 GB VRAM (+77)4800 GB/s (+4200)
S
Makes the model fit on the accelerator instead of staying completely out of reach.88.4 tok/s decode

Makes the model fit on the accelerator instead of staying completely out of reach.

Removes host-memory offload, which is usually the single biggest latency and throughput win.

~$30,000 MSRP

👁 NVIDIA
NVIDIA B200 180GBNVIDIA upgrade
180 GB VRAM (+116)8000 GB/s (+7400)
S
Makes the model fit on the accelerator instead of staying completely out of reach.204.7 tok/s decode

Makes the model fit on the accelerator instead of staying completely out of reach.

Removes host-memory offload, which is usually the single biggest latency and throughput win.

~$30,000 MSRP

Frequently asked questions

See all results for NVIDIA A16 64GBSee all hardware for Leanstral 119B A6B
NVFP4
4
66.6 GB
Medium
F0
Q4_K_M
4
72.6 GB
MediumF0
Q5_K_M
5
85.7 GB
HighF0
Q6_K
6
97.6 GB
HighF0
Q8_0
8
127.3 GB
Very HighF0
F16
16
244.0 GB
MaximumF0

Add more VRAM headroom. The first useful upgrade is more dedicated VRAM so you can fit the model without shrinking context or dropping to a much lower quant.