Can I Run Phi-4 Family on AMD Radeon RX 9070?

Written by Jakub Rusinowski · Last updated July 12, 2026

Yes, comfortably — you'll have ~7.5 GB of headroom running Phi-4 (14B) at Q4_K_M (8.4525 GB, ~41 tok/s (est.)) with room for up to 16K context.

Buy This HardwareAMD Radeon RX 9070 16GB — 16 GB VRAM · 220 W board powerDeploy in the Cloud NowRTX 4090 on RunPod — from $0.34/hr · rate checked 2026-07

or compare on Vast.ai from $0.35/hr (typical low · varies)

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AMD Radeon RX 9070 16GB
16 GB VRAM · 220 W board power
2026 prices are volatile — check the current listing.
Check price on Amazon

AMD Radeon RX 9070 Specs

VRAM16 GB
Memory Bandwidth640 GB/s

Phi-4 (14B) on the AMD Radeon RX 9070: VRAM by quantization

QuantVRAM neededFits 16 GB?Max context
F1629.6 GB✗ No
Q8_016.5 GB✗ No
Q6_K13.1 GB✓ Yes16K
Q5_K_M11.6 GB✓ Yes16K
Q4_K_M10.1 GB✓ Yes16K
Q3_K_M7.6 GB✓ Yes16K
Q2_K6.2 GB✓ Yes16K

VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 16 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.

Phi-4 Family Sizes That Fit the AMD Radeon RX 9070

Phi-4 (14B)Q4_K_M · 8.4525 GB · ~41 tok/s (est.)
Buy vs. rent Phi-4 Family
Buy the GPU
~$549
AMD Radeon RX 9070 · MSRP
Rent by the hour
from $0.34/hr
RTX 4090 (24 GB) class

At 2 hrs/day, buying (~$549) beats renting at $0.34/hr after about 2.2 years.

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RunPod $0.34/hr
Rent on RunPod →
Vast.ai $0.35/hr · typical low · varies
Rent on Vast.ai →

Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.

FAQ

Does the AMD Radeon RX 9070 have enough VRAM for Phi-4 Family?

Yes, comfortably — you'll have ~7.5 GB of headroom running Phi-4 (14B) at Q4_K_M (8.4525 GB, ~41 tok/s (est.)) with room for up to 16K context.

Which quantization of Phi-4 Family should I use on the AMD Radeon RX 9070?

Phi-4 (14B) at Q4_K_M quantization (8.4525 GB), estimated ~41 tokens/sec, up to 16K context.

Phi-4 Family on Other GPUs

Popular Models on the AMD Radeon RX 9070

VRAM Tier

Troubleshooting

Buying Guide

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