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

Autor: Jakub Rusinowski · Ostatnia aktualizacja: 12 lipca 2026

Yes, but it's tight — Qwen 3.5 35B-A3B at Q4_K_M needs 21.1 GB of the AMD Radeon RX 7900 XTX's 24 GB, leaving only ~2.9 GB, ~126 tok/s (est.) with room for up to 8K context.

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AMD Radeon RX 7900 XTX 24GB
24 GB VRAM · 355 W board power
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AMD Radeon RX 7900 XTX Specs

VRAM24 GB
Memory Bandwidth960 GB/s

Qwen 3.5 35B-A3B on the AMD Radeon RX 7900 XTX: VRAM by quantization

QuantVRAM neededFits 24 GB?Max contextWhole PC
F1671.7 GB✗ No
Q8_038.9 GB✗ NoBuild for this
Q6_K30.4 GB✗ No
Q5_K_M26.5 GB✗ NoBuild for this
Q4_K_M22.9 GB✓ Yes8KBuild for this
Q3_K_M16.7 GB✓ Yes32K
Q2_K13.2 GB✓ Yes32K

Assumes a 4K-token context with an f16 KV cache, on an estimated architecture — this model publishes no config we can read. 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 Q4_K_M on the AMD Radeon RX 7900 XTX: 8K 23.8 GB · 32K 29.4 GB ✗ · 128K 52 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? Qwen 3.5 35B-A3B on 32 GB of system RAM, CPU only: runs, but it is tight.

Qwen 3.5 Sizes That Fit the AMD Radeon RX 7900 XTX

Qwen 3.5 35B-A3BQ4_K_M · 21.1 GB · ~126 tok/s (est.)
Qwen 3.5 27BQ4_K_M · 16.3 GB · ~32 tok/s (est.)
Qwen 3.5 9BQ4_K_M · 5.4 GB · ~76 tok/s (est.)
Qwen 3.5 4BQ4_K_M · 2.4 GB · ~124 tok/s (est.)
Qwen 3.5 2BQ4_K_M · 1.2 GB · ~166 tok/s (est.)
Qwen 3.5 0.8BQ4_K_M · 0.5 GB · ~213 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 →
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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

Can I run Qwen 3.5 on the AMD Radeon RX 7900 XTX?

Yes, but it's tight — Qwen 3.5 35B-A3B at Q4_K_M needs 21.1 GB of the AMD Radeon RX 7900 XTX's 24 GB, leaving only ~2.9 GB, ~126 tok/s (est.) with room for up to 8K context.

What's the best Qwen 3.5 size for the AMD Radeon RX 7900 XTX?

Qwen 3.5 35B-A3B at Q4_K_M quantization (21.1 GB), estimated ~126 tokens/sec, up to 8K context.

Every Qwen 3.5 size on the AMD Radeon RX 7900 XTX

SizeVRAMVerdictSpeed
Qwen 3.5 397B-A17B134 GBDoes not fit
Qwen 3.5 122B-A10B73.7 GBDoes not fit
Qwen 3.5 35B-A3B21.1 GBRuns~126 tok/s
Qwen 3.5 27B16.3 GBRuns~32 tok/s
Qwen 3.5 9B5.4 GBRuns~76 tok/s
Qwen 3.5 4B2.4 GBRuns~124 tok/s
Qwen 3.5 2B1.2 GBRuns~166 tok/s
Qwen 3.5 0.8B0.5 GBRuns~213 tok/s

Qwen 3.5 on Other GPUs

Popular Models on the AMD Radeon RX 7900 XTX

VRAM Tier

Troubleshooting

Buying Guide

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