1. Introduction
The Intel Core i9-9900X X-Series Processor is a high-performance computing component designed for demanding workloads and enthusiast-level systems. Featuring 10 Cores and 20 Threads, it delivers exceptional processing power for tasks ranging from content creation to gaming. This manual provides essential information for the proper installation, operation, and maintenance of your processor.

Figure 1.1: Intel Core i9 X-Series Processor Retail Box. The packaging highlights the Core i9 branding and X-Series designation.
2. Setup and Installation
Proper installation is crucial for the optimal performance and longevity of your Intel Core i9-9900X processor. This processor is designed for motherboards based on the Intel X299 chipset and utilizes the LGA 2066 socket.
2.1. Compatibility Requirements
- Motherboard: Compatible only with motherboards based on Intel X299 chipsets.
- Socket: Requires an LGA 2066 socket.
- Memory: Supports Quad DDR4-2666 Memory channels.
- Cooling: An adequate cooling solution (not included with the processor) is required due to the 165W Max Thermal Design Power.
2.2. Installation Steps (General Guidelines)
- Ensure your motherboard is compatible with the LGA 2066 socket and X299 chipset.
- Carefully open the CPU socket retention arm on your motherboard.
- Align the processor with the socket, matching the gold triangle on the CPU to the triangle on the socket. Handle the processor by its edges to avoid touching the contacts.
- Gently lower the processor into the socket. Do not force it.
- Close the socket retention arm to secure the processor.
- Install your chosen CPU cooler according to its manufacturer's instructions. Ensure proper thermal paste application.
- Connect all necessary power cables to the motherboard and CPU.

Figure 2.1: Intel Core i9 X-Series Processor. This image shows the top view of the processor chip, highlighting the Intel branding and Core i9 X-series designation.
For detailed installation instructions, always refer to your motherboard's user manual.
3. Operating the Processor
The Intel Core i9-9900X processor is designed for high-performance computing, offering a range of features to enhance your system's capabilities.
3.1. Key Features and Performance
- Core/Thread Count: 10 Cores / 20 Threads for superior multitasking and demanding applications.
- Clock Speed: Base clock speed of 3.50 GHz, with Max Turbo Frequency up to 4.40 GHz.
- Smart Cache: 19.25 MB of Intel Smart Cache for faster data access.
- Memory Support: Quad DDR4-2666 Memory channels for high-bandwidth memory operations.
- Intel Optane Memory: Supported for accelerated system responsiveness.
3.2. Advanced Technologies
The i9-9900X incorporates several Intel technologies to optimize performance and efficiency:
- Intel Turbo Boost Max Technology 3.0: Identifies the best performing cores and directs critical workloads to them.
- Intel Turbo Boost 2.0 Technology: Dynamically increases the processor's frequency as needed by taking advantage of thermal and power headroom.
- Intel Hyper-Threading Technology: Allows each physical core to run two threads simultaneously, improving parallel processing.
- Intel Virtualization Technology (VT-x & VT-d): Enhances the performance of virtualized environments.
- Instruction Set Extensions: Includes SSE4.1/4.2, AVX 2.0, and AVX-512 for accelerated computations.
- Enhanced Intel SpeedStep Technology: Enables the system to dynamically adjust processor voltage and frequency.
- Intel AES New Instructions: Accelerates data encryption and decryption.
- Execute Disable Bit: Provides hardware-based virus protection.

Figure 3.1: Intel Core i9 X-Series Logo. This emblem signifies the high-end performance and features of the X-Series processors.
4. Maintenance
The Intel Core i9-9900X processor requires minimal maintenance. However, ensuring proper environmental conditions and cooling is vital for its long-term stability and performance.
4.1. Cooling System
Given its 165W Thermal Design Power (TDP), maintaining an efficient cooling system is paramount. Regularly check and clean your CPU cooler's heatsink and fan to prevent dust buildup, which can impede airflow and lead to overheating. Ensure thermal paste is applied correctly and replaced if the cooler is ever removed.
4.2. System Environment
Operate your computer in a well-ventilated area, free from excessive dust and humidity. Avoid blocking air vents on your computer case.
5. Troubleshooting
If you encounter issues with your Intel Core i9-9900X processor, consider the following common troubleshooting steps:
5.1. Common Issues and Solutions
- System Not Booting / No Display:
- Verify that the CPU is correctly seated in the LGA 2066 socket.
- Ensure all power cables (24-pin ATX, 8-pin CPU) are securely connected to the motherboard.
- Check RAM modules are properly seated in their slots.
- Confirm your motherboard BIOS/UEFI is updated to support the i9-9900X processor.
- Overheating / System Shutdowns:
- Ensure your CPU cooler is properly installed and making good contact with the CPU.
- Verify that the CPU fan is spinning and connected to the correct header on the motherboard.
- Check for dust buildup on the heatsink and clean if necessary.
- Confirm adequate airflow within your computer case.
- System Instability / Crashes:
- Ensure your operating system and drivers are up to date.
- If overclocking, revert to default settings to check for stability.
- Run memory diagnostic tools to check for RAM issues.
If issues persist, consult your motherboard's manual for specific diagnostic codes or contact Intel Support.
6. Specifications
Detailed technical specifications for the Intel Core i9-9900X X-Series Processor:
| Feature | Specification |
|---|---|
| Model Number | BX80673I99900X |
| Core Name | Skylake |
| Core Count | 10 Cores |
| Thread Count | 20 Threads |
| Base Clock Speed | 3.50 GHz |
| Max Turbo Frequency | 4.40 GHz |
| Smart Cache | 19.25 MB |
| DMI3 | 8.0 GT/s |
| Lithography | 14 nm |
| Socket | LGA 2066 |
| Max Thermal Design Power (TDP) | 165 W |
| Memory Type Supported | DDR4-2666 |
| Max CPU Configuration | 1 |
| Product Dimensions (LxWxH) | 4 x 2 x 4.6 inches |
| Item Weight | 3.17 ounces |
| Date First Available | November 13, 2018 |
7. Warranty Information
The Intel Core i9-9900X X-Series Processor typically comes with a Three-year Limited Warranty from Intel. This warranty covers defects in materials and workmanship under normal use.

Figure 7.1: Back of Intel Core i9 X-Series Processor Retail Box. This view shows the multi-language content description and a note about the three-year limited warranty, emphasizing the requirement for an LGA2066 motherboard and specific software/services.
Important: Requires a motherboard with the LGA2066 socket and specific enabled hardware, software or services to utilize certain Intel technologies. Check with your system manufacturer or retailer for full details.
For specific warranty terms and conditions, please refer to the official Intel warranty documentation provided with your product or visit the Intel website.
8. Support
For further assistance, technical support, or to access additional resources, please use the following channels:
- Intel Support Website: Visit the official Intel support website for drivers, software, and troubleshooting guides.
- Intel Store: Explore other Intel products and resources at the Intel Store on Amazon.
- System Manufacturer: If your processor came as part of a pre-built system, contact your system manufacturer for support specific to your configuration.





