1. Product Overview
The ASUS P9X79 PRO is an ATX Intel motherboard designed to support LGA 2011 2nd Generation Intel Core i7 Processors. It features the Intel X79 chipset, offering robust performance and extensive connectivity options for high-end computing systems.
Key features include:
- 8 x DIMM Slots supporting Quad-channel DDR3 memory up to 2400(O.C.) MHz.
- Digital 8+2 Phase Power Design for stable power delivery.
- Multiple PCIe 3.0 x16 slots for NVIDIA 3-Way SLI and AMD Quad-GPU CrossFireX support.
- Integrated Intel 82579V Chipset for LAN connectivity.
- Bluetooth v2.1 + EDR for wireless peripheral connections.
- ASUS UEFI (Unified Extensible Firmware Interface) BIOS for intuitive system management.
- ASUS SSD Caching for enhanced storage performance.

Figure 1: Top-down view of the ASUS P9X79 PRO motherboard, showcasing its various components including CPU socket, DIMM slots, and PCIe slots.
2. Setup and Installation
This section provides instructions for installing the ASUS P9X79 PRO motherboard and its primary components into your computer system.
2.1. CPU Installation
The P9X79 PRO uses an LGA 2011 socket. Handle the CPU and socket with extreme care to avoid damaging the pins.
- Prepare the Socket: Gently push down the load lever and pull it away from the socket to open the load plate.
- Align the CPU: Carefully align the triangular mark on the CPU with the corresponding mark on the socket. Ensure the CPU notches align with the socket keys.
- Insert the CPU: Place the CPU gently into the socket. Do not force it. It should sit flat without pressure.
- Secure the CPU: Close the load plate and push the load lever back into its locked position.

Figure 2: Close-up view of the LGA 2011 CPU socket on the ASUS P9X79 PRO motherboard, showing the mechanism for CPU installation.
2.2. Memory (RAM) Installation
The motherboard supports Quad-channel DDR3 memory. For optimal performance, install memory modules in matched pairs or quads according to the motherboard manual's recommended slots.
- Open DIMM Clips: Push open the clips at both ends of the DIMM slots.
- Align Memory Module: Align the notch on the memory module with the key in the DIMM slot.
- Insert Memory: Press the memory module firmly into the slot until the clips snap into place.
2.3. Connecting Peripherals and Power
Connect all necessary cables including the 24-pin ATX power connector, 8-pin CPU power connector, SATA data cables for storage drives, and front panel connectors (USB, audio, power/reset buttons, LEDs).
Ensure all connections are secure before powering on the system.
3. Operating and Features
The ASUS P9X79 PRO offers advanced features for performance and system management.
3.1. UEFI BIOS
The Unified Extensible Firmware Interface (UEFI) BIOS provides an intuitive graphical interface for system configuration. You can navigate using a mouse and keyboard to adjust settings for CPU, memory, storage, and more.
The motherboard also supports ASUS USB BIOS Flashback, allowing you to update the BIOS without a CPU or memory installed, by simply using a USB flash drive.
3.2. ASUS SSD Caching
This feature allows you to combine the speed of a Solid State Drive (SSD) with the capacity of a Hard Disk Drive (HDD). By using an SSD as a cache for your HDD, frequently accessed data is stored on the faster SSD, significantly improving system responsiveness and application loading times.
Refer to the ASUS utility software for detailed instructions on setting up SSD Caching.
3.3. Multi-GPU Support (SLI/CrossFireX)
The P9X79 PRO supports NVIDIA 3-Way SLI and AMD Quad-GPU CrossFireX technologies, enabling the use of multiple graphics cards for enhanced gaming and professional graphics performance. Ensure your power supply can handle the increased power demands of multiple GPUs.
4. Maintenance
Proper maintenance ensures the longevity and stable operation of your motherboard.
- Dust Removal: Regularly clean dust from the motherboard and components using compressed air. Ensure the system is powered off and unplugged before cleaning.
- BIOS Updates: Periodically check the ASUS support website for the latest BIOS versions. Updating the BIOS can improve compatibility, stability, and performance. Follow the instructions provided by ASUS carefully during the update process.
- Driver Updates: Keep all system drivers (chipset, LAN, audio, etc.) updated to ensure optimal performance and compatibility with your operating system and applications.
- Physical Inspection: Occasionally inspect the motherboard for any loose connections, damaged components, or signs of overheating.
5. Troubleshooting
This section provides solutions to common issues you might encounter with your ASUS P9X79 PRO motherboard.
5.1. System Does Not Power On
- Ensure the power supply unit (PSU) is properly connected to the motherboard (24-pin ATX and 8-pin CPU power).
- Verify that the power button cable from the chassis is correctly connected to the motherboard's front panel header.
- Check if the PSU switch is in the 'ON' position and the power cable is securely plugged into a working outlet.
5.2. No Display Output
- Confirm that the graphics card is fully seated in its PCIe slot and its power connectors (if any) are attached.
- Ensure the monitor cable is securely connected to the graphics card and the monitor is powered on and set to the correct input.
- Try reseating the RAM modules. Incorrectly seated RAM can prevent the system from booting.
- If possible, test with a different graphics card or monitor to isolate the issue.
5.3. System Instability or Crashes
- Check CPU and GPU temperatures. Overheating can cause instability. Ensure cooling solutions are properly installed.
- Verify that all power connections are stable and sufficient for your components.
- Run memory diagnostic tools to check for faulty RAM modules.
- Update BIOS and drivers to the latest versions.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | ASUS |
| Model Number | P9X79 PRO |
| CPU Socket | LGA 2011 |
| Chipset | Intel X79 Express |
| Memory Type | DDR3 (Quad-channel) |
| Max Memory Capacity | 64 GB |
| Memory Speed | 1066 MHz - 2400(O.C.) MHz |
| PCIe Slots | 3 x PCIe 3.0 x16, 1 x PCIe 3.0 x16 (@x8), 2 x PCIe 2.0 x1 |
| SATA Ports | SATA 6Gb/s, SATA 3Gb/s (specific counts vary by controller) |
| USB Ports | USB 3.0, USB 2.0 |
| LAN | Intel 82579V Gigabit LAN |
| Wireless | Bluetooth v2.1 + EDR |
| Form Factor | ATX |
| Dimensions (LxWxH) | 14.4 x 11.9 x 3.3 inches |
| Item Weight | 4.45 pounds |
7. Warranty and Support
ASUS provides warranty coverage for its products. The specific warranty period and terms may vary by region and purchase date. Please retain your proof of purchase for warranty claims.
For technical support, driver downloads, BIOS updates, and further information, please visit the official ASUS support website:
When contacting support, have your product model number (P9X79 PRO) and serial number ready.