Written by Jakub Rusinowski · Last updated July 12, 2026
Yes, but it's tight — Qwen 3 30B-A3B (MoE) at Q4_K_M needs 18.414375 GB of the AMD Radeon RX 7900 XT's 20 GB, leaving only ~1.6 GB, ~123 tok/s (est.) with room for up to 4K context.
See what else this hardware can run →
or compare on Vast.ai from $0.35/hr (typical low · varies)
As an Amazon Associate we earn from qualifying purchases. Cloud GPU links are referral links — we may earn a commission at no extra cost to you.
| VRAM | 20 GB |
| Memory Bandwidth | 800 GB/s |
| Quant | VRAM needed | Fits 20 GB? | Max context |
|---|---|---|---|
| F16 | 62.2 GB | ✗ No | — |
| Q8_0 | 33.6 GB | ✗ No | — |
| Q6_K | 26.2 GB | ✗ No | — |
| Q5_K_M | 22.8 GB | ✗ No | — |
| Q4_K_M | 19.6 GB | ✓ Yes | 4K |
| Q3_K_M | 14.2 GB | ✓ Yes | 32K |
| Q2_K | 11.2 GB | ✓ Yes | 64K |
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 30B-A3B (MoE) | Q4_K_M · 18.414375 GB · ~123 tok/s (est.) |
| Qwen 3 14B | Q4_K_M · 8.935500000000001 GB · ~46 tok/s (est.) |
| Qwen 3 8B | Q4_K_M · 4.950749999999999 GB · ~71 tok/s (est.) |
At 2 hrs/day, buying (~$899) beats renting at $0.34/hr after about 3.7 years.
Affiliate links — we may earn a commission if you sign up, at no extra cost to you.
Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
Yes, but it's tight — Qwen 3 30B-A3B (MoE) at Q4_K_M needs 18.414375 GB of the AMD Radeon RX 7900 XT's 20 GB, leaving only ~1.6 GB, ~123 tok/s (est.) with room for up to 4K context.
Qwen 3 30B-A3B (MoE) at Q4_K_M quantization (18.414375 GB), estimated ~123 tokens/sec, up to 4K context.
| Size | VRAM | Verdict | Speed |
|---|---|---|---|
| Qwen 3 235B-A22B (MoE) | 141.9 GB | Does not fit | — |
| Qwen 3 32B | 19.8 GB | Runs at Q3_K_M | — |
| Qwen 3 30B-A3B (MoE) | 18.4 GB | Runs | ~123 tok/s |
| Qwen 3 14B | 8.9 GB | Runs | ~46 tok/s |
| Qwen 3 8B | 5.0 GB | Runs | ~71 tok/s |
← Can I Run It? | Qwen 3 Model Page | AMD Radeon RX 7900 XT GPU Page | Check Your Hardware