Can I Run Qwen 3.5 on AMD Radeon RX 7900 XTX?

Name: LLM Configurator — GPU VRAM Checker
Author: LLM Configurator

Written by Jakub Rusinowski · Last updated February 24, 2026

Yes, comfortably — you'll have ~7.5 GB of headroom running Qwen 3.5 27B at Q4_K_M (16.5 GB, ~58 tok/s (est.)).

Affiliate disclosure: Some links on this page are affiliate links — if you buy through them, LLM Configurator may earn a commission at no extra cost to you. As an Amazon Associate, LLM Configurator earns from qualifying purchases.

Check price on Amazon — AMD Radeon RX 7900 XTX 24GB

AMD Radeon RX 7900 XTX Specs

VRAM	24 GB
Memory Bandwidth	960 GB/s

Qwen 3.5 27B on the AMD Radeon RX 7900 XTX: VRAM by quantization

Quant	VRAM needed	Fits 24 GB?	Max context
F16	63.4 GB	✗ No	—
Q8_0	38.1 GB	✗ No	—
Q6_K	31.6 GB	✗ No	—
Q5_K_M	28.6 GB	✗ No	—
Q4_K_M	25.7 GB	✗ No	—
Q3_K_M	20.9 GB	✓ Yes	4K
Q2_K	18.3 GB	✓ Yes	4K

VRAM needed assumes a 4K-token context with an f16 KV cache; “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.

Qwen 3.5 Sizes That Fit the AMD Radeon RX 7900 XTX

Qwen 3.5 27B	Q4_K_M · 16.5 GB · ~58 tok/s (est.)
Qwen 3.5 9B	Q4_K_M · 6.6 GB · ~145 tok/s (est.)
Qwen 3.5 4B	Q4_K_M · 3.4 GB · ~282 tok/s (est.)
Qwen 3.5 2B	Q4_K_M · 2.7 GB · ~356 tok/s (est.)
Qwen 3.5 0.8B	Q4_K_M · 1 GB · ~400 tok/s (est.)

Buy vs. rent Qwen 3.5

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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Rent on RunPod →

Vast.ai $0.35/hr · typical low · varies