Comparison of Radeon R9 280X and Radeon R9 M390X [S]ave
| Attribute |  Radeon R9 M390X × |  Radeon R9 280X × |
|---|---|---|
| GPU | ||
| Release year (year) | 2015 | 2013 |
| Reference card | - | AMD Radeon R9 280X 850 MHz 3 GB |
| GPU brand | AMD | AMD |
| GPU name | Amethyst | Tahiti |
| Market | Laptop | Desktop |
| Clock speed (MHz) | 723 | 850 |
| Turbo clock speed (MHz) | 950 | 1,000 |
| Is dual GPU | - | - |
| Model | Radeon R9 M390X | Radeon R9 280X |
| Memory | ||
| Memory (MB) | 4,096 | 3,072 |
| Memory bandwidth (GB/s) | 160 | 288 |
| Memory bus (bit) | 256 | 384 |
| Memory type | GDDR5 | GDDR5 |
| Memory clock speed (MHz) | 1,250 | 1,500 |
| Effective memory clock speed (MHz) | 5,000 | 6,000 |
| Noise and power | ||
| TDP (W) | 100 | 250 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 23.14 | 32 |
| Render output processors | 32 | 32 |
| Texture mapping units | 128 | 128 |
| Shading units | 2,048 | 2,048 |
| Floating-point performance (GFLOPS) | 2,961 | 4,096 |
| Compute units | 32 | 32 |
| Texture rate (GTexel/s) | 92.5 | 128 |
| Benchmarks | ||
| Cloud Gate Factor | 23.65 | - |
| Battlefield 4 | 63.65 | 39.9 |
| 1↑Face detection (mPixels/s) | 44.39 | 95.62 |
| T-Rex (GFXBench 3.0) | 3356.44 | 3356.04 |
| Manhattan (GFXBench 3.0) | 3384.91 | 3709.16 |
| Bitcoin mining (mHash/s) | 241.5 | 468.39 |
| Sky Diver Factor | 317.44 | 380.99 |
| Thief | 35 | 33.6 |
| Fire Strike Factor | - | 62.73 |
Help · Contact us · Disclaimer · Contributors · Developers · Donate