24 GB VRAM (+4)936 GB/s (+296)
B
Raises estimated decode speed by about 31%.52.5 tok/s decode
Raises estimated decode speed by about 31%.
~$1,499 MSRP
Can Codestral 22B run on RTX A4500 20GB?
YES — With Offload
B61Good
○Estimated from fit model
Codestral 22B needs ~19.1 GB VRAM. RTX A4500 20GB has 20.0 GB. With Q4_K_M quantization, expect ~37 tok/s.
Runtime: OllamaCapacity: OffloadBandwidth: MediumStack: BasicBottleneck: Balanced
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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.
Select quantization to explore
Q4_K_M (Medium quality) — 19.1 GB, 40.0 tok/s, Runs with offload
19.1 GB required20.0 GB available
96% VRAM used
Fit status
Runs with offload
Decode
40.0 tok/s
TTFT
4841 ms
Safe context
22K
Memory
19.1 GB / 20.0 GB
Memory breakdown
Weights13.4 GB
KV Cache2.4 GB
Runtime1.2 GB
Headroom2.0 GB
See how fast it feels
See how fast it feelsCodestral 22B 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: 40.0 tok/s decode · 4.8s TTFT (warm) · 100 tok/s prefill
What limits this setup
This setup is broadly balanced for this model.
Very little memory headroom
You can run the model, but there is not much room left for longer context, bigger batches, extra apps, or future model updates.
Best improvement path
Buy headroom, not only minimum fit
A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.
Performance by workload
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | B | Tight fit | 37.2 tok/s | 2839 ms | 22K |
| Coding | B | Runs with offload | 37.2 tok/s | 5205 ms | 22K |
| Agentic Coding | C | Runs with offload | 24.0 tok/s | 11757 ms | 22K |
| Reasoning | B | Runs with offload | 37.2 tok/s | 6151 ms | 22K |
| RAG | C | Runs with offload | 24.0 tok/s | 14696 ms | 22K |
Quantization options
How Codestral 22B (22B params) fits at each quantization level on RTX A4500 20GB (20.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 8.6 GB | Low | B60 |
Q3_K_S | 3 | 10.8 GB | Low | B61 |
NVFP4 | 4 |
Get started
Copy-paste commands to run Codestral 22B on your machine.
Run
ollama run codestralUpgrade options