Performance comparison: which is faster?
Radeon R9 380X (AMD, 2015) and Radeon R9 280X (AMD, 2014) are compared here. Compare scores and VRAM, generative AI usability, and CPUs that pair well with each GPU.
Overall performance: R9 380X is about 10% faster
For generative AI, the higher-VRAM R9 380X（4GB） has the advantage. For gaming, prioritize performance score and CPU compatibility; for AI, prioritize VRAM.
Relative performance score (higher is faster). Actual fps varies by resolution, game, and CPU configuration.
| Item | R9 380X | R9 280X |
|---|---|---|
| Performance Score | 5,500 | 5,000 |
| VRAM | 4GB | 3GB |
| Manufacturer | AMD | AMD |
| Series | R9 | R9 |
| Release Year | 2015 | 2014 |
| Compatible CPU Example | AMD FX-4300 | AMD A8-7670K |
These generative AI models can run on only one GPU because of the VRAM difference (Stable Diffusion, Flux, LLMs, and others).
— None (all models that run on R9 380X also run here)
| If You Want To... | Recommended |
|---|---|
| Prioritize high fps and smooth performance in demanding games | R9 380X |
| Run larger generative AI and LLM models | R9 380X |
| Prioritize value and adequate performance | R9 280X (the lower model is often sufficient) |
R9 380X is about 10% higher by score (R9 380X: 5500 points / R9 280X: 5000 points). Actual fps also varies by resolution, game, and CPU, so price is a reasonable deciding factor when the gap is only a few percent.
R9 380X has 4GB of VRAM, while R9 280X has 3GB; R9 380X has more. If image generation or a local LLM is even a possibility, the higher-VRAM option provides more room.
Using our guideline, AMD FX-4300 pairs well with R9 380X and AMD A8-7670K with R9 280X (CPU:GPU ≈ 0.9:1). If the CPU is too weak, replacing the GPU may not raise fps, so check the combination before buying.
→ R9 380X Details ／ R9 280X Details ／ Compare Another Combination
