Introdución
This manual provides essential information for the installation, operation, and maintenance of your Sapphire Radeon HD 7990 Graphics Card. Please read this manual thoroughly before installation and retain it for future reference. This graphics card is designed for high-performance computing and gaming, featuring a dual GPU architecture and 6GB GDDR5 memory.
Información de seguridade
Observe the following safety precautions to prevent damage to the graphics card or other components, and to ensure personal safety:
- Desconecte sempre a alimentación do ordenador antes de instalar ou retirar calquera compoñente.
- Wear an anti-static wrist strap or frequently touch a grounded metal object to discharge static electricity before handling the graphics card.
- Sujete a tarxeta gráfica polos bordos para evitar tocar os compoñentes sensibles.
- Asegúrate de ventilar axeitadamente a carcasa do teu ordenador para evitar o sobrequecemento.
- Non expoñas a tarxeta gráfica á humidade nin a temperaturas extremas.
Configuración
Requisitos do sistema
- PCI Express-compliant motherboard with one or more x16 graphics slots.
- Minimum 750W power supply with two 8-pin PCI Express power connectors.
- Memoria do sistema mínima de 4 GB (recoméndase 8 GB).
- Supported operating system (e.g., Windows 7, Windows 8, Windows 10).
- CD-ROM drive or internet connection for driver installation.
Instalación física
- Prepara o teu ordenador: Power off your computer and disconnect the power cable. Open the computer case.
- Locate a PCI Express x16 slot: Identify an available PCI Express x16 slot on your motherboard. This card is large; ensure sufficient physical clearance.
- Retirar as tapas das ranuras: Retire as tapas metálicas das ranuras da parte traseira da carcasa do ordenador correspondentes á ranura PCIe escollida.
- Instala a tarxeta gráfica: Carefully align the graphics card with the PCIe slot and press it firmly until it is securely seated. Ensure the retention clip locks into place.
- Conecte os cables de alimentación: Connect two 8-pin PCI Express power connectors from your power supply to the corresponding ports on the top edge of the graphics card. Ensure a secure connection.

Imaxe: Arriba view of the Sapphire Radeon HD 7990 graphics card, showing the three cooling fans and the heatsink assembly. The card features a black and red design.
- Protexer a tarxeta: Use screws to secure the graphics card's bracket to the computer case.
- Pecha o caso: Replace the computer case cover and reconnect the power cable.
Instalación de controladores
- Encendido: Connect your monitor to one of the graphics card's display outputs (DVI-I or Mini DisplayPort) and power on your computer.
- Initial boot: The operating system may install a generic display driver.
- Install AMD drivers:
- Insert the driver CD (if included) and follow the on-screen instructions.
- Alternatively, download the latest drivers from the official AMD websitio (www.amd.com/support). Select your graphics card model and operating system.
- Reiniciar: Reinicie o computador despois de que remate a instalación do controlador.
En funcionamento
Conectando pantallas
The Sapphire Radeon HD 7990 supports multiple display configurations. It features the following output ports:
- 1 x Dual-Link DVI-I port
- 4 x Mini DisplayPort (mDP) ports

Imaxe: Lateral view of the Sapphire Radeon HD 7990 graphics card, showing the DVI-I port and four Mini DisplayPort outputs. A black DVI-to-VGA adapter is attached to the DVI-I port.
Connect your monitors using appropriate cables. For Mini DisplayPort, you may need adapters depending on your monitor's input type (e.g., mDP to DisplayPort, mDP to DVI, mDP to HDMI). Note that for certain multi-monitor configurations, activo Mini DisplayPort adapters may be required.
Multi-Display Setup (AMD Eyefinity)
The card supports up to 5 simultaneous displays using AMD Eyefinity technology. To configure multiple displays:
- Ensure all monitors are physically connected to the graphics card.
- Open the AMD Radeon Software (formerly Catalyst Control Center).
- Navigate to the "Display" or "Eyefinity" section.
- Follow the on-screen prompts to detect and arrange your displays. You can choose between extended desktop, duplicate, or Eyefinity group modes for a single large desktop experience.
Mantemento
Un mantemento axeitado garante a lonxevidade e o rendemento óptimo da túa tarxeta gráfica.
- Limpeza: Periodically clean the fans and heatsink to remove dust buildup. Use compressed air to gently blow dust out of the fins and fan blades. Ensure the computer is powered off and unplugged before cleaning. Do not use liquid cleaners.
- Actualizacións de controladores: Regularly check the official AMD website for the latest graphics drivers. Keeping drivers updated can improve performance, stability, and compatibility with new software and games.
- Monitorización de temperatura: Use monitoring software to keep track of the card's operating temperatures, especially under load. Ensure your system has adequate airflow.
Resolución de problemas
If you encounter issues with your Sapphire Radeon HD 7990 graphics card, refer to the following common troubleshooting steps:
- Sen saída de visualización:
- Ensure the monitor is connected to the graphics card, not the motherboard's integrated graphics.
- Comprobe que a tarxeta gráfica estea completamente asentada na ranura PCIe.
- Confirm that both 8-pin PCIe power connectors are securely attached.
- Proba cun cable de pantalla ou monitor diferente se é posible.
- Poor Performance or Crashes:
- Ensure you have the latest graphics drivers installed from AMD's official websitio.
- Check for overheating. Monitor GPU temperatures during demanding tasks. Improve case airflow if temperatures are consistently high.
- Verifica que a túa fonte de alimentación cumpra co mínimo de vatiostage requirement and provides stable power.
- Pecha as aplicacións en segundo plano innecesarias.
- Chirrido da bobina: Some high-performance graphics cards may exhibit a high-pitched "coil whine" sound under heavy load. This is generally not indicative of a fault and is often related to power delivery components. While not always preventable, ensuring a stable power supply and good case airflow can sometimes mitigate it.
- Problemas do controlador: If you experience graphical glitches or instability after a driver update, try rolling back to a previous stable driver version or performing a clean installation of the latest drivers.
For further assistance, consult the AMD support website or Sapphire's official support channels.
Especificacións
| Característica | Detalle |
|---|---|
| Número de modelo | 21207-00-50G |
| Procesador gráfico | Dual AMD Radeon HD 7990 (GCN Architecture) |
| Procesadores de fluxo | 4096 (2048 por GPU) |
| Reloxo de núcleo | 950 MHz (Boost: 1000 MHz) |
| Memoria de vídeo | 6GB GDDR5 (3GB per GPU) |
| Interface de memoria | 768-bit (2 x 384-bit) |
| Effective Memory Clock | 6000 MHz |
| Portos de saída | 1 x Dual-Link DVI-I, 4 x Mini DisplayPort |
| Max Display Support | 5 Displays (via AMD Eyefinity) |
| Interface | PCI Express 3.0 x16 |
| Potencia Externa | 2 x 8-pin PCIe Power Connectors |
| Dimensións (LxWxH) | 14.75 x 4 x 9.75 polgadas |
| Peso do elemento | 4.55 libras |

Image: Backplate view of the Sapphire Radeon HD 7990 graphics card, showing the PCB and mounting points for the cooler.
Garantía e Soporte
For warranty information and technical support, please refer to the documentation included with your product or visit the official Sapphire Technology websitio. Garda o comprobante de compra para reclamacións de garantía.
For driver downloads and additional support resources, visit the official AMD support page: www.amd.com/support





