Can gemma 3 27b it run on RTX PRO 5000 Blackwell 48GB?

YES — Runs Great

C52Usable

Estimated from fit model

gemma 3 27b it needs ~25.6 GB VRAM. RTX PRO 5000 Blackwell 48GB has 48.0 GB. With Q4_K_M quantization, expect ~69 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: HighStack: 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) — 25.6 GB, 68.5 tok/s, Runs well

25.6 GB required48.0 GB available

53% VRAM used

Fit status

Runs well

Decode

68.5 tok/s

TTFT

2824 ms

Safe context

129K

Memory

25.6 GB / 48.0 GB

Memory breakdown

Weights16.5 GB

KV Cache3.2 GB

Runtime1.2 GB

Headroom4.8 GB

See how fast it feels

See how fast it feelsgemma 3 27b it on RTX PRO 5000 Blackwell 48GB
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: 68.5 tok/s decode · 2.8s TTFT (warm) · 171 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	68.5 tok/s	1541 ms	129K
Coding	C	Runs well	68.5 tok/s	2824 ms	129K
Agentic Coding	C	Runs well	68.5 tok/s	4108 ms	129K
Reasoning	C	Runs well	68.5 tok/s	3338 ms	129K
RAG	C	Runs well	68.5 tok/s	5135 ms	129K

Inference speed

gemma 3 27b it inference speed — tokens per second by GPU & Mac

Estimated decode speed (tokens/sec) for gemma 3 27b it at Q4_K_M across popular GPUs and Apple Silicon, using the fastest local runtime per device. Fastest is RTX 5090 32GB at ~73 tok/s. Speed is memory-bandwidth bound, so cards that fit the whole model in VRAM run far faster than ones that offload to system RAM.

GPU / Mac	Memory	Quant	Speed (tok/s)	Fits?
RTX 5090 32GB	32 GB	Q4_K_M	72.9	Fits
RTX 4090 24GB	24 GB	Q4_K_M	46.5	Offloads

Quantization options

How gemma 3 27b it (27B params) fits at each quantization level on RTX PRO 5000 Blackwell 48GB (48.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	10.5 GB	Low	C43
Q3_K_S	3	13.2 GB	Low	C44
NVFP4	4

Get started

Copy-paste commands to run gemma 3 27b it on your machine.

Run

lms load hf-maziyarpanahi--gemma-3-27b-it-gguf && lms server start

Frequently asked questions

Can RTX PRO 5000 Blackwell 48GB run gemma 3 27b it?

Yes, RTX PRO 5000 Blackwell 48GB can run gemma 3 27b it with a C grade (Runs well). Expected decode speed: 68.5 tok/s.

How much VRAM does gemma 3 27b it need?

gemma 3 27b it (27B parameters) requires approximately 25.6 GB of memory with Q4_K_M quantization.

What is the best quantization for gemma 3 27b it?

The recommended quantization for gemma 3 27b it is Q4_K_M, which balances quality and memory efficiency.

What speed will gemma 3 27b it run at on RTX PRO 5000 Blackwell 48GB?

On RTX PRO 5000 Blackwell 48GB, gemma 3 27b it achieves approximately 68.5 tokens per second decode speed with a time-to-first-token of 2824ms using Q4_K_M quantization.

Can RTX PRO 5000 Blackwell 48GB run gemma 3 27b it for coding?

For coding workloads, gemma 3 27b it on RTX PRO 5000 Blackwell 48GB receives a C grade with 68.5 tok/s and 129K context.

What context window can gemma 3 27b it use on RTX PRO 5000 Blackwell 48GB?

On RTX PRO 5000 Blackwell 48GB, gemma 3 27b it can safely use up to 129K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

See all results for RTX PRO 5000 Blackwell 48GB See all hardware for gemma 3 27b it

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