- Client Computing Group – 55% of 2016 revenues – produces hardware components used in desktop and notebook computers.
- Data Center Group – 29% of 2016 revenues – produces hardware components used in server, network, and storage platforms.
- Internet of Things Group – 5% of 2016 revenues – offers platforms designed for retail, transportation, industrial, buildings and home use.
- Non-Volatile Memory Solutions Group – 4% of 2016 revenues – manufactures NAND flash memory and 3D XPoint, branded as Optane, products primarily used in solid-state drives.
- Intel Security Group – 4% of 2016 revenues – produces software, particularly security, and antivirus software.
- Programmable Solutions Group – 3% of 2016 revenues – manufactures programmable semiconductors (primarily FPGAs).
In 2017, Dell accounted for about 16% of Intel's total revenues, Lenovo accounted for 13% of total revenues, and HP Inc. accounted for 11% of total revenues.
According to IDC, while Intel enjoyed the biggest market share in both the overall worldwide PC microprocessor market (73.3%) and the mobile PC microprocessor (80.4%) in the second quarter of 2011, the numbers decreased by 1.5% and 1.9% compared to the first quarter of 2011.
In the 1980s, Intel was among the top ten sellers of semiconductors (10th in 1987) in the world. In 1992, Intel became the biggest chip maker by revenue and has held the position ever since. Other top semiconductor companies include TSMC, Advanced Micro Devices, Samsung, Texas Instruments, Toshiba and STMicroelectronics.
Competitors in PC chipsets include Advanced Micro Devices, VIA Technologies, Silicon Integrated Systems, and Nvidia. Intel's competitors in networking include NXP Semiconductors, Infineon, Broadcom Limited, Marvell Technology Group and Applied Micro Circuits Corporation, and competitors in flash memory include Spansion, Samsung, Qimonda, Toshiba, STMicroelectronics, and SK Hynix.
The only major competitor in the x86 processor market is Advanced Micro Devices (AMD), with which Intel has had full cross-licensing agreements since 1976: each partner can use the other's patented technological innovations without charge after a certain time. However, the cross-licensing agreement is canceled in the event of an AMD bankruptcy or takeover.
Some smaller competitors such as VIA Technologies produce low-power x86 processors for small factor computers and portable equipment. However, the advent of such mobile computing devices, in particular, smartphones, has in recent years led to a decline in PC sales. Since over 95% of the world's smartphones currently use processors designed by ARM Holdings, ARM has become a major competitor for Intel's processor market. ARM is also planning to make inroads into the PC and server market.
Intel has been involved in several disputes regarding violation of antitrust laws, which are noted below.