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Voltarum Local LLM Hardware Guide

NVIDIA graphics cards for local LLMs

Why choose this family
The fastest option and CUDA, which every AI tool supports first.
The catch
Memory per card is small (12–32 GB) and 2026 prices are inflated.
In this familyMemoryBandwidthLargest popular model at 4-bitPrice
RTX 509032 GB1.79 TB/sQwen3.6 35B A3B$4,329
RTX PRO 600096 GB1.79 TB/sQwen3.5 122B A10B$8,565
RTX 309024 GB936 GB/sQwen3.6 27B$1,340
RTX PRO 500048 GB1.34 TB/sQwen3.6 35B A3B$4,500
RTX 5060 Ti 16 GB16 GB448 GB/sgpt-oss-20b$789
RTX PRO 400024 GB672 GB/sQwen3.6 27B$1,500
RTX PRO 450032 GB896 GB/sQwen3.6 35B A3B$2,500
RTX 409024 GB1.01 TB/sQwen3.6 27B$1,599
RTX 5070 Ti16 GB896 GB/sgpt-oss-20b$1,190
RTX 3060 12 GB12 GB360 GB/sGemma 4 12B$329
RTX 508016 GB960 GB/sgpt-oss-20b$1,830
RTX 507012 GB672 GB/sGemma 4 12B$1,010

NVIDIA GPUs

NVIDIA GeForce RTX 5090

Memory
32 GB
Bandwidth
1.79 TB/s

Largest popular model at 4-bit: Qwen3.6 35B A3B

The fastest consumer card for local AI: 32 GB and 1.8 TB/s make 30B-class models fly.

from $4,329 (typical price)Recommended

NVIDIA GPUs

NVIDIA RTX PRO 6000 Blackwell

Memory
96 GB
Bandwidth
1.79 TB/s

Largest popular model at 4-bit: Qwen3.5 122B A10B

96 GB on one card at RTX 5090 speed: gpt-oss-120b and 122B MoE models entirely in GPU memory.

from $8,565 (typical price)For advanced users

NVIDIA GPUs

NVIDIA GeForce RTX 3090

Memory
24 GB
Bandwidth
936 GB/s

Largest popular model at 4-bit: Qwen3.6 27B

The homelab classic: 24 GB and 936 GB/s, bought used. Two of them make 48 GB.

from $1,340 (typical price)Good budget option

NVIDIA GPUs

NVIDIA RTX PRO 5000 Blackwell

Memory
48 GB
Bandwidth
1.34 TB/s

Largest popular model at 4-bit: Qwen3.6 35B A3B

48 GB in a 300 W blower card: 70B dense models on one quiet-ish GPU.

from $4,500 (typical price)For advanced users

NVIDIA GPUs

NVIDIA GeForce RTX 5060 Ti 16 GB

Memory
16 GB
Bandwidth
448 GB/s

Largest popular model at 4-bit: gpt-oss-20b

The cheapest new NVIDIA card with 16 GB. Low power and CUDA make it the easy starter card.

from $789 (typical price)Good budget option

NVIDIA GPUs

NVIDIA RTX PRO 4000 Blackwell

Memory
24 GB
Bandwidth
672 GB/s

Largest popular model at 4-bit: Qwen3.6 27B

24 GB in a single-slot, 140 W card: the homelab-friendly way to get 24 GB new.

from $1,500 (typical price)Recommended

NVIDIA GPUs

NVIDIA RTX PRO 4500 Blackwell

Memory
32 GB
Bandwidth
896 GB/s

Largest popular model at 4-bit: Qwen3.6 35B A3B

32 GB at only 200 W: RTX 5090 capacity with half the heat.

from $2,500 (typical price)Recommended

NVIDIA GPUs

NVIDIA GeForce RTX 4090

Memory
24 GB
Bandwidth
1.01 TB/s

Largest popular model at 4-bit: Qwen3.6 27B

Out of production but still a top AI card: 24 GB at 1 TB/s.

from $1,599 (launch price)For advanced users

NVIDIA GPUs

NVIDIA GeForce RTX 5070 Ti

Memory
16 GB
Bandwidth
896 GB/s

Largest popular model at 4-bit: gpt-oss-20b

Nearly RTX 5080 bandwidth for less. Still 16 GB, so speed rather than size.

from $1,190 (typical price)Recommended

NVIDIA GPUs

NVIDIA GeForce RTX 3060 12 GB

Memory
12 GB
Bandwidth
360 GB/s

Largest popular model at 4-bit: Gemma 4 12B

The cheapest way into CUDA with 12 GB. Slow, but enough for 7–12B models.

from $329 (launch price)Good budget option

NVIDIA GPUs

NVIDIA GeForce RTX 5080

Memory
16 GB
Bandwidth
960 GB/s

Largest popular model at 4-bit: gpt-oss-20b

Fast, but only 16 GB: the same memory as cards that cost a third as much.

from $1,830 (typical price)Not recommended for AI

NVIDIA GPUs

NVIDIA GeForce RTX 5070

Memory
12 GB
Bandwidth
672 GB/s

Largest popular model at 4-bit: Gemma 4 12B

A gaming card with only 12 GB. For AI the 16 GB RTX 5060 Ti is the better buy.

from $1,010 (typical price)Not recommended for AI