Can I Run Llama 3.3 on AMD Radeon RX 7900 XTX?

Superseded model. Llama 3.3 has been superseded by Llama 4. This page is kept for reference; the newer family is a better starting point. View Llama 4 →

Written by Jakub Rusinowski · Last updated July 12, 2026

Yes, comfortably — you'll have ~3.8 GB of headroom running Llama 3.3 70B Instruct at Q2_K_XS (Tight) (20.2 GB, ~26 tok/s (est.)).

See what else this hardware can run →

Buy This HardwareAMD Radeon RX 7900 XTX 24GB — 24 GB VRAM · 355 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 7900 XTX 24GB
24 GB VRAM · 355 W board power
2026 prices are volatile — check the current listing.
Check price on Amazon

AMD Radeon RX 7900 XTX Specs

VRAM24 GB
Memory Bandwidth960 GB/s

Llama 3.3 70B Instruct on the AMD Radeon RX 7900 XTX: VRAM by quantization

QuantVRAM neededFits 24 GB?Max contextWhole PC
F16142.1 GB✗ No——
Q8_076.5 GB✗ No——
Q6_K59.5 GB✗ No——
Q5_K_M51.8 GB✗ No——
Q4_K_M44.4 GB✗ No——
Q3_K_M32 GB✗ No——
Q2_K25.2 GB✗ No——

Assumes a 4K-token context with an f16 KV cache. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 24 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.

Context costs VRAM too. At Q2_K_XS (Tight) on the AMD Radeon RX 7900 XTX: 8K 23.7 GB · 32K 31.7 GB ✗ · 128K 64 GB ✗. Past 32K it no longer fits 24 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.

No compatible GPU? Llama 3.3 70B Instruct on 256 GB of system RAM, CPU only: runs, but too slowly to be worth it.

Llama 3.3 Sizes That Fit the AMD Radeon RX 7900 XTX

Llama 3.3 70B InstructQ2_K_XS (Tight) · 20.2 GB · ~26 tok/s (est.)
Buy vs. rent Llama 3.3
Buy the GPU
~$999
AMD Radeon RX 7900 XTX · MSRP
Rent by the hour
from $0.34/hr
RTX 4090 (24 GB) class

At 2 hrs/day, buying (~$999) beats renting at $0.34/hr after about 4.1 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

Is the AMD Radeon RX 7900 XTX enough to run Llama 3.3 locally?

Yes, comfortably — you'll have ~3.8 GB of headroom running Llama 3.3 70B Instruct at Q2_K_XS (Tight) (20.2 GB, ~26 tok/s (est.)).

What's the best Llama 3.3 size for the AMD Radeon RX 7900 XTX?

Llama 3.3 70B Instruct at Q2_K_XS (Tight) quantization (20.2 GB), estimated ~26 tokens/sec.

Llama 3.3 on Other GPUs

Popular Models on the AMD Radeon RX 7900 XTX

VRAM Tier

Troubleshooting

Buying Guide

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