AMD Radeon RX 7900 XTX vs AMD Radeon RX 9070 XT
For running models locally, priced in the UK. At 128k context the first runs 27 models fully in memory, the second 21.
In short
The AMD Radeon RX 7900 XTX has more memory for models: 24 GB against 16 GB. At 128k context the AMD Radeon RX 7900 XTX runs 27 of the models we track fully in memory and the AMD Radeon RX 9070 XT 21; only the AMD Radeon RX 7900 XTX holds Gemma 4 26B-A4B. On the models both run fully in memory, the AMD Radeon RX 7900 XTX is about 1.5× as fast as the AMD Radeon RX 9070 XT (estimated, median across models). In the UK the AMD Radeon RX 7900 XTX costs £780 at eBay (used) and the AMD Radeon RX 9070 XT £751 at eBay: the AMD Radeon RX 9070 XT is £29 cheaper.
Updated . Speeds are estimates; how they are worked out.
Specifications
| Spec | AMD Radeon RX 7900 XTX | AMD Radeon RX 9070 XT |
|---|---|---|
| GPU | Radeon RX 7900 XTX | Radeon RX 9070 XT |
| Memory | 24 GB GDDR6 | 16 GB GDDR6 |
| Memory bus | 384-bit | 256-bit |
| Memory bandwidth | 960 GB/s | 640 GB/s |
| FP16 compute | 123 TFLOPS | 195 TFLOPS |
| Software | ROCm | ROCm |
| Board power | 355 W | 304 W |
| PCIe generation | Gen 4 | Gen 5 |
| PCIe lanes | x16 | x16 |
What each runs
Estimated decode speed with the most precise quant that fits each one est.
| Model | AMD Radeon RX 7900 XTX | AMD Radeon RX 9070 XT |
|---|---|---|
| Gemma 4 26B-A4B | 54tok/sQ5_K_M | offload |
| gpt-oss 20B | 56tok/sMXFP4 | offload |
| Gemma 4 12B | 35tok/sQ8_0 | 29tok/sQ6_K |
| Qwen 3.5 9B | 38tok/sQ8_0 | 25tok/sQ8_0 |
| Qwen 3.5 4B | 60tok/sQ8_0 | 40tok/sQ8_0 |
| Gemma 4 E4B | 44tok/sQ8_0 | 29tok/sQ8_0 |
| LFM2.5 8B-A1B | 42tok/sQ8_0 | 29tok/sUD-Q6_K |
| Llama 3.1 8B | 23tok/sQ5_K_M | offload |
| Qwen2.5 0.5B | 247tok/sQ8_0 | 164tok/sQ8_0 |
| Qwen3.5 0.8B | 216tok/sQ8_0 | 144tok/sQ8_0 |
| Qwen3.5 2B | 172tok/sQ5_K_M | 115tok/sQ5_K_M |
| DeepSeek R1 Distill Qwen 1.5B | 93tok/sQ8_0 | 62tok/sQ8_0 |
| Mellum2.1 12B A2.5B Thinking | 69tok/sQ8_0 | 49tok/sQ6_K |
| Spark X2.5 4B | 67tok/smlx-4bit | 44tok/smlx-4bit |
| MiniCPM5 2B | 64tok/sQ8_0 | 42tok/sQ8_0 |
| FrogNano 4B 2609 | 59tok/sQ8_0 | 39tok/sQ8_0 |
| LFM2.5 2.6B | 48tok/sQ8_0 | 32tok/sQ8_0 |
| LFM2.5 VL 3B | 48tok/sQ8_0 | 32tok/sQ8_0 |
| Kimi VL A3B Thinking 2506 | 44tok/sQ8_0 | 35tok/sQ4_K_M |
| Kimi VL A3B | 43tok/smlx-8bit | offload |
| GLM 4 9B 0414 | 39tok/smlx-5bit | 26tok/smlx-5bit |
| granite vision 4.1 4b | 37tok/sQ8_0 | 25tok/sQ8_0 |
| granite 4.2 3b | 36tok/sQ8_0 | 24tok/sQ8_0 |
| GLM 4.6V Flash | 34tok/sQ8_0 | 31tok/sQ4_K_M |
| DeepSeek R1 Distill Qwen 7B | 34tok/sQ8_0 | 26tok/sQ6_K |
| GLM 4.1V 9B Thinking | 31tok/smlx-8bit | offload |
| DeepSeek R1 Distill Llama 8B | 23tok/sQ5_K_M | offload |
| Qwen 3.8 27B | offload | offload |
| Qwen 3.5 122B-A10B | offload | won't run |
| Qwen 3.6 27B | offload | offload |
| Gemma 4 31B | offload | offload |
| Mistral Small 4 119B | offload | won't run |
| Qwen 3.6 35B-A3B | offload | offload |
| Qwen 3.5 27B | offload | offload |
| Qwen 3.5 35B-A3B | offload | offload |
| GLM 4.7 Flash | offload | offload |
| Devstral Small 2 24B | offload | offload |
| Nemotron 3.5 Lightning 30B-A3B | offload | offload |
| Kimi Linear 48B-A3B | offload | offload |
| Qwen3 Coder 30B-A3B | offload | offload |
| Gemma 3 27B | offload | offload |
| Mistral Small 3.2 24B | offload | offload |
| Ministral 3 14B | offload | offload |
| Qwen3 14B | offload | offload |
| DeepSeek R1 0528 Qwen3 8B | offload | offload |
| Qwen3 8B | offload | offload |
| Phi-4 14B | offload | offload |
| Ministral 3 8B | offload | offload |
| Granite 4.2 8B | offload | offload |
| Ministral 3 8B Reasoning 2512 | offload | offload |
| LFM2.5 24B A2B | offload | offload |
| Qwen3.8 27B OBLITERATED | offload | offload |
| DeepSeek R1 Distill Qwen 14B | offload | offload |
| Devstral Small 2507 | offload | offload |
| Magistral Small 2506 | offload | offload |
| Magistral Small 2507 | offload | offload |
| Magistral Small 2509 | offload | offload |
| DeepSeek V4 Flash | won't run | won't run |
| GLM 5.3 Flash | won't run | won't run |
| Qwen 3.8 Flash Next | won't run | won't run |
| MiniMax M2.7 | won't run | won't run |
| Nemotron 3 Super 120B-A12B | won't run | won't run |
| Qwen3 Coder Next | won't run | won't run |
| gpt-oss 120B | won't run | won't run |
| GLM 4.5 Air | won't run | won't run |
| Qwen3 Next 80B-A3B | won't run | won't run |
| Qwen3 32B | won't run | won't run |
| DeepSeek R1 Distill Qwen 32B | won't run | won't run |
| Llama 3.3 70B | won't run | won't run |
| DeepSeek R1 | won't run | won't run |
| DeepSeek R1 0528 | won't run | won't run |
| DeepSeek R1 Distill Llama 70B | won't run | won't run |
| DeepSeek R1 Zero | won't run | won't run |
| DeepSeek V3 0324 | won't run | won't run |
| DeepSeek V3.1 | won't run | won't run |
| DeepSeek V3.1 Terminus | won't run | won't run |
| DeepSeek V3.2 | won't run | won't run |
| DeepSeek V4 Flash 0731 | won't run | won't run |
| DeepSeek V4 Flash Vision Exp | won't run | won't run |
| Devstral 2 123B Instruct 2512 | won't run | won't run |
| GLM 4.5 | won't run | won't run |
| GLM 4.5V | won't run | won't run |
| GLM 4.6 | won't run | won't run |
| GLM 4.6V | won't run | won't run |
| GLM 4.7 | won't run | won't run |
| GLM 5 | won't run | won't run |
| GLM 5.1 | won't run | won't run |
| GLM 5.2 | won't run | won't run |
| GLM 5.3 | won't run | won't run |
| Kimi Dev 72B | won't run | won't run |
| Kimi K2 | won't run | won't run |
| Kimi K2 Instruct 0905 | won't run | won't run |
| Kimi K2 Thinking | won't run | won't run |
| Kimi K2.5 | won't run | won't run |
| MiniMax M2 | won't run | won't run |
| MiniMax M2.1 | won't run | won't run |
| MiniMax M2.5 | won't run | won't run |
| MiniMax M3 | won't run | won't run |
| Mistral Medium 3.5 128B | won't run | won't run |
| granite 4.2 30b | won't run | won't run |
Questions
- Which is better for local AI, the AMD Radeon RX 7900 XTX or the AMD Radeon RX 9070 XT?
- Choose the AMD Radeon RX 7900 XTX to run bigger models. Choose the AMD Radeon RX 7900 XTX for speed. Choose the AMD Radeon RX 9070 XT to spend less.
- Which can run bigger models, the AMD Radeon RX 7900 XTX or the AMD Radeon RX 9070 XT?
- At 128k context the AMD Radeon RX 7900 XTX runs 27 of the models we track fully in memory and the AMD Radeon RX 9070 XT 21; only the AMD Radeon RX 7900 XTX holds Gemma 4 26B-A4B.
- Which is faster for local AI, the AMD Radeon RX 7900 XTX or the AMD Radeon RX 9070 XT?
- On the models both run fully in memory, the AMD Radeon RX 7900 XTX is about 1.5× as fast as the AMD Radeon RX 9070 XT (estimated, median across models).
- What is the price difference between the AMD Radeon RX 7900 XTX and the AMD Radeon RX 9070 XT?
- In the UK the AMD Radeon RX 7900 XTX costs £780 at eBay (used) and the AMD Radeon RX 9070 XT £751 at eBay: the AMD Radeon RX 9070 XT is £29 cheaper.
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