Performance comparison: which is faster?
Radeon HD 7790 (AMD, 2012) and Radeon HD 7770 (AMD, 2012) are compared here. Compare scores and VRAM, generative AI usability, and CPUs that pair well with each GPU.
Overall performance: HD 7790 is about 20% faster
Both have 1GB of VRAM, so they support a similar range of generative AI models. 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 | HD 7790 | HD 7770 |
|---|---|---|
| Performance Score | 3,000 | 2,500 |
| VRAM | 1GB | 1GB |
| Manufacturer | AMD | AMD |
| Series | HD 7000 | HD 7000 |
| Release Year | 2012 | 2012 |
| Compatible CPU Example | AMD Phenom II X2 560 | AMD Athlon II X3 445 |
| If You Want To... | Recommended |
|---|---|
| Prioritize high fps and smooth performance in demanding games | HD 7790 |
| Run larger generative AI and LLM models | HD 7790 |
| Prioritize value and adequate performance | HD 7770 (the lower model is often sufficient) |
HD 7790 is about 20% higher by score (HD 7790: 3000 points / HD 7770: 2500 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.
Both have 1GB of VRAM, so the range of generative AI models they can run is nearly the same.
Using our guideline, AMD Phenom II X2 560 pairs well with HD 7790 and AMD Athlon II X3 445 with HD 7770 (CPU:GPU ≈ 0.9:1). If the CPU is too weak, replacing the GPU may not raise fps, so check the combination before buying.
→ HD 7790 Details ／ HD 7770 Details ／ Compare Another Combination
