Can zephyr 7B alpha run on RTX 4070 Laptop 8GB?

YES — Tight Fit

C51Usable

Estimated from fit model

zephyr 7B alpha needs ~7.1 GB VRAM. RTX 4070 Laptop 8GB has 8.0 GB. With Q4_K_M quantization, expect ~46 tok/s.

Runtime: OllamaCapacity: TightBandwidth: LowStack: 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

Q4_K_M (Medium quality) — 7.1 GB, 45.6 tok/s, Tight fit

7.1 GB required8.0 GB available

89% VRAM used

Fit status

Tight fit

Decode

45.6 tok/s

TTFT

4249 ms

Safe context

34K

Memory

7.1 GB / 8.0 GB

Memory breakdown

Weights4.3 GB

KV Cache0.8 GB

Runtime1.2 GB

Headroom0.8 GB

See how fast it feels

See how fast it feelszephyr 7B alpha on RTX 4070 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: 45.6 tok/s decode · 4.2s TTFT (warm) · 114 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	Tight fit	45.6 tok/s	2318 ms	34K
Coding	C	Tight fit	45.6 tok/s	4249 ms	34K
Agentic Coding	C	Runs with offload	45.6 tok/s	6180 ms	34K
Reasoning	C	Tight fit	45.6 tok/s	5021 ms	34K
RAG	C	Runs with offload	45.6 tok/s	7725 ms	34K

Quantization options

How zephyr 7B alpha (7B params) fits at each quantization level on RTX 4070 Laptop 8GB (8.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	2.7 GB	Low	C53
Q3_K_S	3	3.4 GB	Low	C53
NVFP4	4

Get started

Copy-paste commands to run zephyr 7B alpha on your machine.

Run

lms load hf-thebloke--zephyr-7b-alpha-gguf && lms server start

Upgrade options

Hardware that runs zephyr 7B alpha well

RTX 3060 12GBBudget pick

12 GB VRAM (+4)360 GB/s (+104)

Adds memory headroom for longer context windows and future model growth.55.6 tok/s decode

Adds memory headroom for longer context windows and future model growth.

~$329 MSRP

RTX 5070 12GBBest value

12 GB VRAM (+4)672 GB/s (+416)

Raises estimated decode speed by about 115%.98 tok/s decode

Raises estimated decode speed by about 115%.

Adds memory headroom for longer context windows and future model growth.

~$549 MSRP

RTX 4070 Super 12GBNVIDIA upgrade

12 GB VRAM (+4)504 GB/s (+248)

Raises estimated decode speed by about 99%.90.9 tok/s decode

Raises estimated decode speed by about 99%.

Adds memory headroom for longer context windows and future model growth.

~$599 MSRP

Frequently asked questions

Can RTX 4070 Laptop 8GB run zephyr 7B alpha?

Yes, RTX 4070 Laptop 8GB can run zephyr 7B alpha with a C grade (Tight fit). Expected decode speed: 45.6 tok/s.

How much VRAM does zephyr 7B alpha need?

zephyr 7B alpha (7B parameters) requires approximately 7.1 GB of memory with Q4_K_M quantization.

What is the best quantization for zephyr 7B alpha?

The recommended quantization for zephyr 7B alpha is Q4_K_M, which balances quality and memory efficiency.

What speed will zephyr 7B alpha run at on RTX 4070 Laptop 8GB?

On RTX 4070 Laptop 8GB, zephyr 7B alpha achieves approximately 45.6 tokens per second decode speed with a time-to-first-token of 4249ms using Q4_K_M quantization.

Can RTX 4070 Laptop 8GB run zephyr 7B alpha for coding?

For coding workloads, zephyr 7B alpha on RTX 4070 Laptop 8GB receives a C grade with 45.6 tok/s and 34K context.

What context window can zephyr 7B alpha use on RTX 4070 Laptop 8GB?

On RTX 4070 Laptop 8GB, zephyr 7B alpha can safely use up to 34K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

See all results for RTX 4070 Laptop 8GB See all hardware for zephyr 7B alpha

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