AMD Radeon HD 8990 OEM vs AMD Radeon R9 390 X2
What is the difference between AMD Radeon HD 8990 OEM and AMD Radeon R9 390 X2. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Malta | GPU Name | Grenada |
| Malta XT (215-0849026) | Model number | Grenada PRO (215-0880030) |
| GCN 1.0 | Architecture | GCN 2.0 |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| 4,313 million | Transistors | 6,200 million |
| 365 mm² | Die Size | 438 mm² |
Graphics Card
| Apr 24th, 2013 | Release Date | Sep 3rd, 2015 |
| Sea Islands (HD 8900) | Family | Pirate Islands (R9 300) |
| End-of-life | Production | Active |
| Southern Islands | Predecessor | Volcanic Islands |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x16 |
Memory
| 3 GB x2 | Memory Size | 8 GB x2 |
| GDDR5 | Memory Type | GDDR5 |
| 384 bit x2 | Memory Bus | 512 bit x2 |
Clock Speeds
| 1500 MHz 6 Gbps effective | Memory Clock | 1350 MHz 5.4 Gbps effective |
Render Config
| 128 x2 | TMUs | 160 x2 |
| 32 x2 | ROPs | 64 x2 |
Board Design
| 375 W | Thermal design power (TDP) | 580 W |
| 750 W | Suggested PSU | 950 W |
| 1x DVI 4x mini-DisplayPort | Display Connectors | 2x DVI 1x HDMI 1x DisplayPort |
| 2x 8-pin | Power Connectors | 4x 8-pin |
API support
| 12 (11_1) | DirectX | 12 (12_0) |
| 4.6 | OpenGL | 4.6 |
| 1.2 | OpenCL | 2.0 |
| 1.2 | Vulkan | 1.2 |
| 5.1 | Shader Model | 6.3 |