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

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

作者： Jakub Rusinowski · 最后更新： 2026年2月24日

Yes, comfortably — you'll have ~3.5 GB of headroom running Qwen 3.5 27B at Q4_K_M (16.5 GB, ~48 tok/s (est.)).

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在亚马逊查看价格 — AMD Radeon RX 7900 XT 20GB

AMD Radeon RX 7900 XT Specs

VRAM	20 GB
Memory Bandwidth	800 GB/s

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

Quant	VRAM needed	Fits 20 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	✗ No	—
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 20 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 XT

Qwen 3.5 27B	Q4_K_M · 16.5 GB · ~48 tok/s (est.)
Qwen 3.5 9B	Q4_K_M · 6.6 GB · ~121 tok/s (est.)
Qwen 3.5 4B	Q4_K_M · 3.4 GB · ~235 tok/s (est.)
Qwen 3.5 2B	Q4_K_M · 2.7 GB · ~296 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

~$899

AMD Radeon RX 7900 XT · MSRP

Rent by the hour

from $0.34/hr

RTX 4090 (24 GB) class

At 2 hrs/day, buying (~$899) beats renting at $0.34/hr after about 3.7 years.

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RunPod $0.34/hr

Rent on RunPod →

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