HARDWARE FIT CHECK • DeepSeek-R1 Distill Qwen 7B + 2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)7.11 GB / 48 GB VRAM

Can I Run DeepSeek-R1 Distill Qwen 7B on 2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)?

Full VRAM footprint analysis, tokens/sec generation benchmark, and copy-paste Ollama & vLLM runtime commands for running DeepSeek-R1 Distill Qwen 7B (7.6B) on 2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM) (48 GB).

✓ FITS IN VRAM7.11 GB (15%)~213 t/s

Target Hardware & Model

interactive
GPU Topology / Quantity2x Dual-GPU Rig (48GB Pool)
Pre-configured 2x GPU tensor-parallel topology (48GB total VRAM, 1648 GB/s aggregate bandwidth)
Lightweight reasoning assistant fitting on entry-level 8GB–12GB GPUs (RTX 3060/4060) and laptops
DeepSeek-R1 Distill Qwen 7B on 2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)

✓ Fits Comfortably in VRAM

✓ FITS IN VRAM
Required VRAM
7.11 GB
15% of hardware capacity (48 GB)
Est. Decode Speed
~213 tok/s
Dense model @ 1648 GB/s
Available Headroom
+40.89 GB
Safe for OS display & full context
Memory Allocation & Headroom
7.11 GB allocated of 48 GB capacity
15% utilized
Weights: 4.56 GB
KV: (32K): 0.94 GB
Overhead: 1.61 GB
Free Headroom: +40.89 GB
Architecture & Throughput Transparency: Single-user decode speed (~213 tok/s) is memory-bandwidth bound at batch size = 1 on 2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM) (1648 GB/s). Prompt prefill / TTFT (~3,089 tok/s) is compute-bound and utilizes GPU Tensor cores. Actual latency varies with FlashAttention-2 and runtime engine (Ollama/vLLM/llama.cpp).

Local Hardware Configurations & Pricing

High-bandwidth VRAM specs and current market prices
Consumer GPU
32 GB VRAM

NVIDIA GeForce RTX 5090 (32GB GDDR7)

Maximum tokens/sec on 27B–35B models & Blackwell FP4 quantization

1792 GB/s575W TDP
Consumer GPU
24 GB VRAM

NVIDIA GeForce RTX 4090 (24GB GDDR6X)

The 24GB CUDA enthusiast standard for 14B–32B Q4_K_M models

1008 GB/s450W TDP
Multi-GPU Rig
48 GB VRAM

2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)

Best price-to-VRAM homelab rig for Llama 3.3 70B Q4_K_M & Qwen 2.5 Coder 32B Q8_0

1648 GB/s700W TDP
Consumer GPU
16 GB VRAM

NVIDIA GeForce RTX 5080 (16GB GDDR7)

Blazing fast 8B–14B coding models with FP4/Q6_K precision

960 GB/s360W TDP

Quantization Precision Matrix

32K ctx • KV: Q8_0
QuantizationWeightsKV CacheTotal VRAMEst. SpeedFit Status
FP1616 bpw15.2 GB0.94 GB18.12 GB (38%)~66 t/sFITS
Q8_08.5 bpw8.06 GB0.94 GB10.73 GB (22%)~123 t/sFITS
Q6_K6.56 bpw6.23 GB0.94 GB8.84 GB (18%)~158 t/sFITS
Q5_K_M5.68 bpw5.4 GB0.94 GB7.98 GB (17%)~181 t/sFITS
Q4_K_M4.8 bpw4.56 GB0.94 GB7.11 GB (15%)~213 t/sFITS
FP44.25 bpw4.03 GB0.94 GB6.56 GB (14%)~240 t/sFITS
IQ3_XS3.3 bpw3.12 GB0.94 GB5.62 GB (12%)~305 t/sFITS
FAQ & Reference

Frequently Asked Questions: DeepSeek-R1 Distill Qwen 7B on 2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)

How much VRAM does DeepSeek-R1 Distill Qwen 7B need on 2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)?

At standard 4-bit quantization (Q4_K_M) with 32K context, DeepSeek-R1 Distill Qwen 7B requires 7.11 GB of total VRAM (weights + KV cache + CUDA runtime overhead).

What inference speed will DeepSeek-R1 Distill Qwen 7B achieve on 2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)?

Based on 2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)'s 1648 GB/s memory bandwidth, expected decode speed is approximately 213 tokens per second.

Can I expand context beyond 32K tokens?

Each additional 32K tokens of context requires additional KV cache memory. For longer context windows, consider 8-bit or 4-bit KV cache quantization.