Will It Run AI

Can Phi 3 Mini 3.8B run on RTX 3000 Ada Laptop 8GB?

YES — With Q2_K

B59Good
Estimated from fit model

Phi 3 Mini 3.8B needs ~9.3 GB VRAM. RTX 3000 Ada Laptop 8GB has 8.0 GB. With Q2_K quantization, expect ~53 tok/s.

Runtime: OllamaCapacity: OffloadBandwidth: LowStack: BasicBottleneck: Host offload
Share:

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.

Phi 3 Mini 3.8B at Q4_K_M needs 10.2 GB — too much for RTX 3000 Ada Laptop 8GB (8.0 GB). Runs at Q2_K (9.3 GB) with low quality.
Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 10.2 GB, exceeds 8.0 GB available
10.2 GB required8.0 GB available
127% VRAM needed

2.2 GB over capacity — needs offload or smaller quantization

Fit status

Too heavy

Decode

41.0 tok/s

TTFT

4724 ms

Safe context

10K

Memory

10.2 GB / 8.0 GB

Offload

20%

Memory breakdown

Weights2.3 GB
KV Cache5.9 GB
Runtime1.2 GB
Headroom0.8 GB

See how fast it feels

With memory offload — actual speed may be lower
See how fast it feelsPhi 3 Mini 3.8B on RTX 3000 Ada Laptop 8GB
1st promptCold start — includes initialization
>What is local AI inference?
Local AI inference means running an AI language model directly on your own hardware — your laptop, desktop, or server — instead of sending requests to a remote cloud API. When you run inference locally the model weights are loaded into your GPU or unified memory. Each token you generate requires reading those weights from memory, so memory bandwidth is the main bottleneck for decode speed. Key benefits of running locally: - Full privacy: your prompts never leave your machine - No per-token cost or rate limits - Works offline once the model is downloaded - Latency depends only on your hardware
2nd promptWarm — model ready, no init overhead
>How much VRAM do I need?
It depends on the model size and quantization level. A rough rule of thumb: Model size Q4 (4-bit) Q8 (8-bit) FP16 7B params ~4.3 GB ~7.5 GB ~14 GB 13B params ~7.9 GB ~13.9 GB ~26 GB 70B params ~42.7 GB ~74.9 GB ~140 GB Most people use 4-bit quantization (Q4_K_M) which gives 90-95% of full quality at a fraction of the memory. A 24 GB GPU can comfortably run most 7B-13B models.
Estimated: 41.0 tok/s decode · 4.7s TTFT (warm) · 103 tok/s prefill

What limits this setup

It fits through host-memory offload, and offload is the main reason performance drops.

CPU or host-memory offload is active

About 10% of the working set spills out of accelerator memory, which usually hurts latency and sustained decode throughput.

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

Remove offload with more accelerator memory

Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.

Buy headroom, not only minimum fit

A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.

Increase host RAM if you keep offloading

This setup may need roughly 0.2 GB of extra host RAM just for the offloaded portion, before OS and other tools.

Performance by workload

WorkloadGradeFitDecodeTTFTContext
ChatBTight fit53.2 tok/s1985 ms10K
CodingFToo heavy41.0 tok/s4724 ms10K
Agentic CodingFToo heavy15.7 tok/s17895 ms10K
ReasoningFToo heavy41.0 tok/s5583 ms10K
RAGFToo heavy15.7 tok/s22369 ms10K

Quantization options

How Phi 3 Mini 3.8B (3.799999952316284B params) fits at each quantization level on RTX 3000 Ada Laptop 8GB (8.0 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
1.5 GB
LowB68
Q3_K_S
3
1.9 GB
LowB69
NVFP4
4
2.1 GB
MediumB69
Q4_K_M
4
2.3 GB
MediumB69
Q5_K_M
5
2.7 GB
HighA70
Q6_K
6
3.1 GB
HighA71
Q8_0Best for your GPU
8
4.1 GB
Very HighA70
F16
16
7.8 GB
MaximumF0

Get started

Copy-paste commands to run Phi 3 Mini 3.8B on your machine.

Run

ollama run phi3:mini

升级选项

能流畅运行 Phi 3 Mini 3.8B 的硬件

NVIDIARTX 3060 12GB经济之选
12 GB VRAM (+4)360 GB/s (+72)
B
Makes the model fit on the accelerator instead of staying completely out of reach.53.2 tok/s 解码

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.

~$329 MSRP

NVIDIARTX 5060 Ti 16GB最佳性价比
16 GB VRAM (+8)448 GB/s (+160)
A
Makes the model fit on the accelerator instead of staying completely out of reach.53.2 tok/s 解码

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.

~$449 MSRP

NVIDIARTX 4060 Ti 16GBNVIDIA 升级
16 GB VRAM (+8)
A
Makes the model fit on the accelerator instead of staying completely out of reach.53.2 tok/s 解码

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.

~$499 MSRP

Frequently asked questions

Can RTX 3000 Ada Laptop 8GB run Phi 3 Mini 3.8B?

Yes, RTX 3000 Ada Laptop 8GB can run Phi 3 Mini 3.8B at Q2_K quantization (Very compromised (needs ~0.2 GB host RAM)). The recommended Q4_K_M requires 10.2 GB which exceeds available memory, but at Q2_K it needs only 9.3 GB. Expected decode speed: 53.2 tok/s.

How much VRAM does Phi 3 Mini 3.8B need?

Phi 3 Mini 3.8B (3.799999952316284B parameters) requires approximately 10.2 GB at Q4_K_M quantization. On RTX 3000 Ada Laptop 8GB, it fits at Q2_K using 9.3 GB.

What is the best quantization for Phi 3 Mini 3.8B?

The recommended quantization is Q4_K_M, but on RTX 3000 Ada Laptop 8GB the best fitting quantization is Q2_K, which uses 9.3 GB.

What speed will Phi 3 Mini 3.8B run at on RTX 3000 Ada Laptop 8GB?

On RTX 3000 Ada Laptop 8GB, Phi 3 Mini 3.8B achieves approximately 53.2 tokens per second decode speed with a time-to-first-token of 3639ms using Q2_K quantization.

Can RTX 3000 Ada Laptop 8GB run Phi 3 Mini 3.8B for coding?

For coding workloads, Phi 3 Mini 3.8B on RTX 3000 Ada Laptop 8GB receives a F grade with 41.0 tok/s and 10K context.

What context window can Phi 3 Mini 3.8B use on RTX 3000 Ada Laptop 8GB?

On RTX 3000 Ada Laptop 8GB, Phi 3 Mini 3.8B can safely use up to 12K tokens of context at Q2_K quantization. The model's official context limit is 128K, but available memory constrains the safe maximum.

What should I upgrade first if Phi 3 Mini 3.8B feels slow on RTX 3000 Ada Laptop 8GB?

Remove offload with more accelerator memory. Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.

See all results for RTX 3000 Ada Laptop 8GBSee all hardware for Phi 3 Mini 3.8B
Embed this result▼

Paste this snippet into any page to show a live fit card.

<iframe src="https://willitrunai.com/embed/phi-3-mini-3.8b-on-rtx-3000-ada-laptop-8gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>

Preview: