Can I Run Microsoft Phi-4 Mini 3.8B on NVIDIA GeForce RTX 5070 Ti (16GB GDDR7)?
Full VRAM footprint analysis, tokens/sec generation benchmark, and copy-paste Ollama & vLLM runtime commands for running Microsoft Phi-4 Mini 3.8B (3.8B) on NVIDIA GeForce RTX 5070 Ti (16GB GDDR7) (16 GB).
✓ Fits Comfortably in VRAM
OLLAMA_FLASH_ATTENTION=1 OLLAMA_KV_CACHE_TYPE=q8_0 ollama run phi4-mini:3.8bLocal Hardware Configurations & Pricing
NVIDIA GeForce RTX 5090 (32GB GDDR7)
Maximum tokens/sec on 27B–35B models & Blackwell FP4 quantization
NVIDIA GeForce RTX 4090 (24GB GDDR6X)
The 24GB CUDA enthusiast standard for 14B–32B Q4_K_M models
2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)
Best price-to-VRAM homelab rig for 70B Q4_K_M & Qwen 3.8 27B Q8
NVIDIA GeForce RTX 5070 Ti (16GB GDDR7)
Next-gen 16GB Blackwell GPU for fast 14B–32B Q4_K_M coding
Cloud Instance Options for Microsoft Phi-4 Mini 3.8B
On-DemandDeploy this model on an on-demand cloud GPU without local hardware constraints or power usage:
Quantization Precision Matrix
32K ctx • KV: Q8_0| Quantization | Weights | KV Cache | Total VRAM | Est. Speed | Fit Status |
|---|---|---|---|---|---|
| FP1616 bpw | 7.6 GB | 0.81 GB | 9.43 GB (59%) | ~78 t/s | FITS |
| Q8_08.5 bpw | 4.03 GB | 0.81 GB | 5.73 GB (36%) | ~144 t/s | FITS |
| Q6_K6.56 bpw | 3.12 GB | 0.81 GB | 4.79 GB (30%) | ~183 t/s | FITS |
| Q5_K_M5.68 bpw | 2.7 GB | 0.81 GB | 4.35 GB (27%) | ~210 t/s | FITS |
| Q4_K_M4.8 bpw | 2.28 GB | 0.81 GB | 3.92 GB (25%) | ~245 t/s | FITS |
| FP44.25 bpw | 2.01 GB | 0.81 GB | 3.64 GB (23%) | ~275 t/s | FITS |
| IQ3_XS3.3 bpw | 1.56 GB | 0.81 GB | 3.17 GB (20%) | ~346 t/s | FITS |
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Frequently Asked Questions: Microsoft Phi-4 Mini 3.8B on NVIDIA GeForce RTX 5070 Ti (16GB GDDR7)
How much VRAM does Microsoft Phi-4 Mini 3.8B need on NVIDIA GeForce RTX 5070 Ti (16GB GDDR7)?
At standard 4-bit quantization (Q4_K_M) with 32K context, Microsoft Phi-4 Mini 3.8B requires 3.92 GB of total VRAM (weights + KV cache + CUDA runtime overhead).
What inference speed will Microsoft Phi-4 Mini 3.8B achieve on NVIDIA GeForce RTX 5070 Ti (16GB GDDR7)?
Based on NVIDIA GeForce RTX 5070 Ti (16GB GDDR7)'s 896 GB/s memory bandwidth, expected decode speed is approximately 245 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.