AMD Radeon HD 7990 vs NVIDIA GeForce GTX 680
What is the difference between AMD Radeon HD 7990 and NVIDIA GeForce GTX 680. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Malta | GPU Name | GK104 |
| Malta XT (215-0849026) | Model number | GK104-400-A2 |
| GCN 1.0 | Architecture | Kepler |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| 4,313 million | Transistors | 3,540 million |
| 365 mm² | Die Size | 294 mm² |
Graphics Card
| Apr 24th, 2013 | Release Date | Mar 22nd, 2012 |
| Southern Islands (HD 7900) | Family | GeForce 600 |
| End-of-life | Production | End-of-life |
| 999 USD | Launch Price | 499 USD |
| Northern Islands | Predecessor | GeForce 500 |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x16 |
Memory
| 3 GB x2 | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 384 bit x2 | Memory Bus | 256 bit |
Clock Speeds
| 950 MHz | Base Clock | 1006 MHz |
| 1000 MHz | Boost Clock | 1058 MHz |
| 1500 MHz 6 Gbps effective | Memory Clock | 1502 MHz 6 Gbps effective |
Render Config
| 128 x2 | TMUs | 128 |
| 32 x2 | ROPs | 32 |
Board Design
| 304 mm 12 inches | Length | 256 mm 10.1 inches |
| 106 mm 4.2 inches | Width | 111 mm 4.4 inches |
| 38 mm 1.5 inches | Height | 38 mm 1.5 inches |
| 375 W | Thermal design power (TDP) | 195 W |
| 750 W | Suggested PSU | 450 W |
| 1x DVI 4x mini-DisplayPort | Display Connectors | 2x DVI 1x HDMI 1x DisplayPort |
| 2x 8-pin | Power Connectors | 2x 6-pin |
| C476-37 | Board Number | P2002 |
API support
| 12 (11_1) | DirectX | 12 (11_0) |
| 4.6 | OpenGL | 4.6 |
| 1.2 | OpenCL | 3.0 |
| 1.2 | Vulkan | 1.1 |
| 5.1 | Shader Model | 5.1 |