AMD Radeon HD 7990 vs AMD Radeon R9 280X2
What is the difference between AMD Radeon HD 7990 and AMD Radeon R9 280X2. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Malta | GPU Name | Tahiti |
| Malta XT (215-0849026) | Model number | Tahiti XTL (215-0821065) |
| GCN 1.0 | Architecture | GCN 1.0 |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| 4,313 million | Transistors | 4,313 million |
| 365 mm² | Die Size | 352 mm² |
Graphics Card
| Apr 24th, 2013 | Release Date | Unknown |
| Southern Islands (HD 7900) | Family | Volcanic Islands (R9 200) |
| End-of-life | Production | End-of-life |
| Northern Islands | Predecessor | Sea Islands |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x16 |
Memory
| 3 GB x2 | Memory Size | 3 GB x2 |
| GDDR5 | Memory Type | GDDR5 |
| 384 bit x2 | Memory Bus | 384 bit x2 |
Clock Speeds
| 950 MHz | Base Clock | 950 MHz |
| 1000 MHz | Boost Clock | 1000 MHz |
| 1500 MHz 6 Gbps effective | Memory Clock | 1500 MHz 6 Gbps effective |
Render Config
| 128 x2 | TMUs | 128 x2 |
| 32 x2 | ROPs | 32 x2 |
Board Design
| 304 mm 12 inches | Length | 315 mm 12.4 inches |
| 375 W | Thermal design power (TDP) | 375 W |
| 750 W | Suggested PSU | 750 W |
| 1x DVI 4x mini-DisplayPort | Display Connectors | 6x mini-DisplayPort |
| 2x 8-pin | Power Connectors | 3x 8-pin |
| C476-37 | Board Number | C386 |
API support
| 12 (11_1) | DirectX | 12 (11_1) |
| 4.6 | OpenGL | 4.6 |
| 1.2 | OpenCL | 1.2 |
| 1.2 | Vulkan | 1.2 |
| 5.1 | Shader Model | 5.1 |