Intel® Core™ X-series Processors

Intel® Core™ i7-3940XM Processor Extreme Edition

8M Cache, up to 3.90 GHz

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Specifications

Ordering & Compliance

Compatible Products

Downloads

Support

Product Information & Documentation

Identify My Product

Install & Setup

Maintenance & Performance

Product Comparison

Troubleshooting

Intel Support Community

Warranty

Compatibility

What are the minimum requirements to install the Intel Graphics Software?

Does My Intel® Processor Support Microsoft Windows® 10?

Compatibility Issues with Games or Applications on Intel® Processors

How To Find Supported Processors for Windows® 10 Enterprise LTSC 2021

How to Find Supported Operating Systems for Intel® Core™ Processors

How to Find Technical Specifications for Intel® Processors

How to Find Max Memory Size, Max Speed, and Max Number of Channels Supported by Intel® Processors

Unable To Increase the Native Resolution of My Laptop to More Than 1360x768

How to Know If Trusted Platform Module (TPM) Is Supported in Systems with Intel® Processors

How to Upgrade the Laptop's Processor

How to Find Intel® Processor for Gaming

What Is the Correct Thermal Cooler Number for the 10th Generation Intel® Core™ Desktop Boxed Processor?

Why Is the Processor Slow When Using Adobe Photoshop*?

Error Messages

Troubleshooting Tips to Resolve Windows* BSOD of 0xc000021a

Error Code: 0xc0000001 During Startup After Installing Windows

Getting Machine Boot Error with Windows*: MACHINE_CHECK_EXCEPTION

Tips to Fix Logs Saying a Hardware Error Has Been Corrected in Windows* Event Viewer

Driver Installation Error: 0x8007012a on Windows 11*

Why Is the Processor Device Displaying Yellow Exclamation Point in Device Manager for My Intel® Processor?

Getting Blue Screen Error When Enabling Intel® Turbo Boost Technology

Product Information & Documentation

What is the Blueprint video series in YouTube?

Does Intel Sell E-Waste to Recycling Companies?

Right to Repair

Where Can I Buy an Intel® Processor?

TSX Asynchronous Abort Advisory, INTEL-SA-00270, Disclosed November 11, 2019

Intel® Dynamic Tuning Technology (Intel® DTT) Overview

Supported Memory Type for Intel® Laptop (Mobile) Processors

HD Graphics for Intel Laptop (mobile) Processors

Resources and Where to Download Intel® Processor Tools and Utilities

How to Configure Intel® Extreme Memory Profile (Intel® XMP) for Supported Intel® Processors

How to Find the Product Ordering Code for Intel® Boxed Processor

How to Get Material Declaration Data Sheet (MDDS) for Intel® Processors

Symptoms of High Processor Usage

What Is Intel® Turbo Boost Technology and How Does It Work?

Side Channel Vulnerability, Microarchitectural Data Sampling Advisory, SA-00233

Help Guide for the Intel® System Support Utility

Frequently Asked Questions for the Intel® System Support Utility

Right to Repair

Intel® Partner Alliance Defined List of Emerging Countries

What Do the Letters Mean in Intel® Processor Names?

How to Find the Supported Intel® Instruction Set Extensions for an Intel® Processor

Information Not Listed Sometimes When Comparing Products on the Product Specification Page

How to Find Product Change Notifications (PCN) and Product Discontinuance Notifications (PDN) for Intel® Products

How Do I Request a Quote for Intel® Products?

Where to Buy Computer Systems and Devices Powered by Intel®

How to Order Replacement Labels for Self-Built Systems with Intel® Boxed Processor or Laptops

How to Obtain USB Technical Info and Support for Intel® Processor Systems

Overview of the Intel® Processor Identification Utility

Online Service Requests Receive Responses Within One Business Day (How to View All Contact Support Options)

Will the Memory Frequency Downgrade When Installing More DIMMs on a Motherboard?

Is there a Toxic Substances Control Act (TSCA) Document for Intel® Processors?

Resources for the Most Common Intel® Processor Questions

How to Find if Intel® Deep Learning Boost (Intel® DL Boost) Is Supported on My Intel® Processor

How To Find the Discontinuance Date (End of Life) for Intel® Processors

Definition of Engineering Sample (ES) Processors and How to Identify an Intel ES

Overview Information for Intel® Turbo Boost Technology

Information about Temperature for Intel® Processors

How to Find the Microcode Version Currently Running on Your Processor

How to Find the Microcode Version Currently Running on Your Processor

Intel® Instruction Set Extensions Technology

How to Find ECC Memory Support for Intel® Processor

How to Find Datasheets for Intel® Processors

How Do I Check If My Intel® Core™ Processor Supports Intel® Turbo Boost Technology?

How to Get Product Change Notification (PCN) for Intel® Processors

How to Find the Supported Technologies for Intel® Processors

What is the Maximum Operating Temperature of My Intel® Core™ Processor?

How to Find the Features of Intel® Processors Using Product Specification Site

What Does Stepping of Intel® Processors Mean?

How to Check the Supported Frequencies for Intel® Processors

Where to Find the Thermal Design Power (TDP) for Intel® Processors

How to Know If Intel® Processor Supports Intel® Boot Guard

How to Find China RoHS Documentation for Intel® Processors

How Can I Get Engineering Sample Processors from Intel?

How Can I Get Engineering Sample Processors from Intel?

Where to Buy Computer Systems and Devices Powered by Intel®

What Is the Maximum Operating Temperature of My Intel® Processor?

What is the Difference Between Core and Package Temperature?

Performance Proxy Frequently Asked Questions (FAQs) for Intel® Processors

Where to Find Information About Intel® Linux Processor Microcode Data Files

How Do I Find Mechanical Drawings for Intel® Processors?

Support Information for INTEL-SA-00709 Intel® Active Management Technology and Intel® Standard Manageability Advisory

Why Does the Memory Speed on My System Not Always Reach the Maximum Speed with an Intel® Processor?

How to Enable Intel vPro® Technology

Is It Normal for Intel® Processor Stock Voltages to Be as High as 1.5 Volts?

How Do I Check If the Intel® Processor Is Authentic?

Where to Find Information about Platform Compatibility Guide (PCG) for Intel® Processors

What Is the Direct Media Interface (DMI) of Intel® Processors?

Where to Find the Statement of Volatility for Intel® Core™ Processors

How to Find Maximum Voltage for Intel® Core™ Desktop Processor Operating Mode

How to Find Supply Voltage for the Memory Controller of the Intel® Core™ Processors

Technologies Defined for Intel® Processors

Thermal Design Power (TDP) in Intel® Processors

Program for California Energy Commission (CEC) Friendly Motherboards

How to Find Export Control Classification Number (ECCN) for Intel® Processor

Is It Bad If My Intel® Processor Frequently Approaches or Reaches Its Maximum Temperature?

How to Know the Idle Temperature of Intel® Processor

Do Lakefield Processors Support umwait (WAITPKG) Instruction?

Intel® System Support Utility (Intel® SSU) Showing Incorrect Processor Family Details

Where to Obtain CE Certification for Intel® Boxed CPU (Central Processing Unit) Cooler?

Where to Find List of System Manufacturers That Use Intel® Products

Where Do I Find Drivers for Intel® Processors?

Is the CPUID the Same as the ATPO (Serial Number) of the Processor?

Intel® Processors Shelf Life

Overview of Enhanced Intel SpeedStep® Technology for Intel® Processors

Where to Find Intel® Processor Cache Size

Is it Possible to Change the Processor Voltage Using Code/Scripts with Intel® Extreme Tuning Utility (Intel® XTU)?

How Do I Know If the Intel® Processor Is Eligible for Intel vPro® Platform?

Where to Find Microcode for Intel® Processor

How to Get Chipset Drivers for Intel® Processors

Do Intel® Processors Support Second Level Address Translation (SLAT)?

Do Intel® Processors Support MCE (Machine-Check Exception) Feature?

Supported Operating Systems for Intel® Processor Diagnostic Tool

How to Adjust the TDP (Thermal Design Power) in My Laptop

Is Peripheral Component Interconnect Express* (PCIe*) Backward Compatible?

What Is Intel® Extended Memory 64 Technology?

Authorized Use of Intel® Logo Label

Does a Processor with AVX2 or AVX-512 Support AVX Instructions?

Is There a Plastic Cover Over the Thermal Interface Material in the Fan Heatsink Shipped with Intel® Boxed Processor?

Why the Processor Is Using a Single Core When Playing Games

Where Can I Find Information about Intel® Processors?

Difference Between Deep and Deeper Sleep States for Processors

Can I Remove and Replace Integrated Heat Spreader for Better Heat Performance?

Does Intel Provide Typical Temperature Ranges for Each Processor?

Why Are Some Intel® Processors Discontinued?

Bounds Check Bypass Store (BCBS) Vulnerability (INTEL-OSS-10002)

Identify My Product

How to Identify My Intel® Processor

What Is the Difference Between Intel® Boxed and Tray Processors?

How to Find the Generation of Intel® Core™ Processors

How to Get the CPUID for Intel® Processors

How to Check the Number of Cores and Threads in Your Intel® Processor

How to Find if the Intel® Turbo Boost Max Technology 3.0 Supported for Intel® Processor

How to Identify the Socket for Intel® Desktop Processor

How to Find BIOS Version, Motherboard Manufacturer, and Model, Processor Number

The Intel® Processor Diagnostic Tool Overview, Download, and Documentation

How to Identify Intel® Desktop Chipsets

How to Find if an Intel® Processor Supports Intel® Thread Director

Differences Between Intel® Desktop and Mobile Processors

How to Identify Your Intel® Desktop Processor Socket

Can the CPU and the iGPU Hit Their Peak Spec at the Same Time, and Does the iGPU Limit the Power of the CPU?

Install & Setup

User Guide for Installing Intel® Boxed Processor in Your System

How to Resolve Issue with Black Screen While Using the System with Integrated Graphics

What Is the Use for the Zip Folder of Intel® Processor Diagnostic Tool?

Windows* Automatic Repair Appears on Boot Loop

What Is Core Isolation and How Do I Enable It?

Maintenance & Performance

Updated Guidance for Intel Drivers

Updated Guidance for Intel Drivers

Where Can I Find Performance and Benchmarks Information For Intel® Processors?

CPU Usage in Task Manager Fluctuates Reaching 100% While System is Idle on Windows* 10

My Laptop Seems to Be Overheating

How Do I Overcome Application Latency Issue in Intel® Core™ Processor?

Where to Find Intel® Management Engine (Intel® ME) Windows* Drivers for Laptops or Desktop Systems

Product Comparison

Comparison Chart for Intel® Processors for Laptops

How to Compare Intel® Processors Using Product Specifications Page (ARK)

Why Some Older Laptop Processors Have Higher Base Frequency Than Newer Processors

Troubleshooting

Unable to Overclock CPU with Intel® Extreme Tuning Utility (Intel® XTU) Installed on Laptop

What Is Throttling and How Can It Be Resolved?

How to Resolve Continuous Reboot Loop with Windows® 10

How to Fix Issues With No Boot or No Display for Self-Build Systems With Intel® Processors

Troubleshooting Tips for Blue Screen Error (BSOD) While Using Intel® Processors

How to Check if Intel® Quick Sync Video Feature is Enabled or Not in Intel® Processors?

How Is Intel® Turbo Boost Technology Enabled or Disabled?

My Intel® Core™ Processor Does Not Reach the Maximum Turbo Boost Frequency

Is it Normal to Operate Below the Base Frequency for My Intel® Processor?

How to Fix a Noisy Fan in Built-in System with Intel® Processors

Why Do I Get Error Code 19 When Opening Certain Drivers?

High Temperature Ranges Encountered on Intel® Processors Multi-Core Enhancement Is Enabled

How to Resolve Windows* Crash

Tips for Random System Freezing Issue

Built-in Microphone is not Working on Laptop

How to Fix High Processor Usage

What Is the Best Way to Check if the Frequency Is Set to High or Low Values in Your System?

Computer Randomly Reboots or Shuts Down

"CPU Over Temperature" Error Encountered During the System Boot

Why Is Intel® Virtualization Showing Disabled in the System While It Is Supported?

Why Is There a Persistent Observation of High Temperatures When Running Processor Stress Tests?

Why Does my System Have Fewer or Missing Cores?

Seeing Temperature Spikes when Playing Games on Systems with Intel® Core™ Processors

How to Run Intel® Virtualization Technology Using Intel® Processor on a New Motherboard

Intermittent Shutdowns and Restarts When Opening Applications Using Intel® Processor

Processor Turns On for a Few Minutes Then Turns Off

Stuck During Installation of Windows® 10

Is Intel® Extreme Tuning Utility (Intel® XTU) Supported by Windows® 10 Insider Preview* Builds?

Why Does Processor Have Higher Temperature When Playing Video Game?

Warranty & RMA

Warranty Guide for Intel® Processors

Warranty Terms and Conditions for Intel® Products

Intel Customer Support Services during COVID-19 Global Response Actions

Warranty Terms and Conditions for Intel® Products

What Warranty Return Services Are Offered by Intel?

How to Protect Yourself from Unintentionally Handling Fraudulent Processors

Unable to Submit an Intel Warranty Request

Where Do I Ship Intel® Product for a Warranty Replacement?

How Do I Package Intel® Product for a Warranty Replacement?

How Do I Read or Fill out a Return Commercial Invoice for an Intel® Product Warranty Replacement?

What Factors Determine if I Get New or Refurbished Intel® Products When a Warranty Replacement Order Is Approved?

How Do I Report a Problem When Trying to Submit a Warranty Return or Service Ticket?

How Do I Cancel My Warranty Return or Claim?

How Do I Change My Warranty Return or Claim?

Will My Intel® Product Be Replaced with the Same or Different Model?

What Information Do I Need to Provide When Requesting a Warranty Return?

What Email Confirmations Should I Expect When Submitting a Warranty Request, and What if I Don't Get Them?

Does Intel Provide Warranty for Used or Secondhand Intel® Processors and Other Products?

Intel Customer Support Services during COVID-19 Global Response Actions

Support Contact for Intel® Processors

Warranty Process Video for Intel® Processors

Warranty Policy for Intel® Boxed and Tray Processors

Error Message: "Your product could not be located" When Checking Warranty Status or Coverage on an Intel® Processor

How to Identify the Warranty Status of an Intel® Product

Warranty Terms and Conditions for Intel® Products

Is an Extended Warranty Available to Purchase for Intel® Boxed Processors?