Can I Run Gemma 4 on AMD Radeon RX 7900 XT?
作者： Jakub Rusinowski · 最后更新： 2026年7月12日
Yes, comfortably — you'll have ~4.3 GB of headroom running Gemma 4 26B-A4B at Q4_K_M (15.7 GB, ~102 tok/s (est.)) with room for up to 16K context.
See what else this hardware can run →
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AMD Radeon RX 7900 XT Specs
| VRAM | 20 GB |
| Memory Bandwidth | 800 GB/s |
Gemma 4 26B-A4B on the AMD Radeon RX 7900 XT: VRAM by quantization
| Quant | VRAM needed | Fits 20 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 53.7 GB | ✗ No | — | — |
| Q8_0 | 29.3 GB | ✗ No | — | Build for this |
| Q6_K | 23 GB | ✗ No | — | — |
| Q5_K_M | 20.1 GB | ✗ No | — | — |
| Q4_K_M | 17.4 GB | ✓ Yes | 16K | Build for this |
| Q3_K_M | 12.7 GB | ✓ Yes | 32K | — |
| Q2_K | 10.2 GB | ✓ Yes | 32K | — |
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 20 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 XT: 8K 18.2 GB · 32K 23.3 GB ✗ · 128K 43.9 GB ✗. Past 32K it no longer fits 20 GB — a q8_0 KV cache buys roughly half of that back, which the calculator will price for you.
No compatible GPU? Gemma 4 26B-A4B on 24 GB of system RAM, CPU only: runs, but it is tight.
Gemma 4 Sizes That Fit the AMD Radeon RX 7900 XT
| Gemma 4 26B-A4B | Q4_K_M · 15.7 GB · ~102 tok/s (est.) |
| Gemma 4 12B (Unified) | Q4_K_M · 7.2 GB · ~54 tok/s (est.) |
| Gemma 4 E4B | Q4 (QAT) · 4.5 GB · ~75 tok/s (est.) |
| Gemma 4 E2B | Q4 (QAT) · 2.9 GB · ~100 tok/s (est.) |
At 2 hrs/day, buying (~$899) beats renting at $0.34/hr after about 3.7 years.
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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 XT enough to run Gemma 4 locally?
Yes, comfortably — you'll have ~4.3 GB of headroom running Gemma 4 26B-A4B at Q4_K_M (15.7 GB, ~102 tok/s (est.)) with room for up to 16K context.
What's the best Gemma 4 size for the AMD Radeon RX 7900 XT?
Gemma 4 26B-A4B at Q4_K_M quantization (15.7 GB), estimated ~102 tokens/sec, up to 16K context.
Every Gemma 4 size on the AMD Radeon RX 7900 XT
| Size | VRAM | Verdict | Speed |
|---|---|---|---|
| Gemma 4 31B | 18.7 GB | Runs at Q3_K_M | — |
| Gemma 4 26B-A4B | 15.7 GB | Runs | ~102 tok/s |
| Gemma 4 12B (Unified) | 7.2 GB | Runs | ~54 tok/s |
| Gemma 4 E4B | 4.5 GB | Runs | ~75 tok/s |
| Gemma 4 E2B | 2.9 GB | Runs | ~100 tok/s |
Gemma 4 on Other GPUs
- Gemma 4 on NVIDIA GeForce RTX 5080
- Gemma 4 on NVIDIA GeForce RTX 5070 Ti
- Gemma 4 on NVIDIA GeForce RTX 5060 Ti 16GB
- Gemma 4 on NVIDIA GeForce RTX 4090
- Gemma 4 on NVIDIA GeForce RTX 4080 Super
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