The ThinkCentre line of desktop computers was introduced by IBM in 2003. The first three models in this line were the S50, the M50, and A50p. All three desktops were equipped with Intel Pentium 4 processors. The chassis was made of steel and designed for easy component access without the use of tools. The hard disk was fixed in place by a 'caddy' without the use of screws. The caddy had rubber bumpers to reduce vibration and operational noise.
Additional updates to the desktops included greater use of ThinkVantage technologies. All desktop models were made available with ImageUltra. The three desktop models also included an 'Access IBM' button, allowing access to onboard resources, diagnostic tools, automated solutions, and links to online updates and services. Select models featured IBM's Embedded Security Subsystem, with an integrated security chip and IBM Client Security Software.
In 2005, after completing its acquisition of IBM's personal computing business, Lenovo announced the ThinkCentre E Series desktops, designed specifically for small businesses. The ThinkCentre E50 was made available in tower and small form factor, with a silver and black design.
In 2005, Technology Business Research (TBR) observed an increase in the customer satisfaction rate for ThinkCentre desktops. According to TBR's "Corporate IT Buying Behavior and Customer Satisfaction Study” published in the second quarter of 2005, Lenovo was the only one of four surveyed companies that displayed a substantial increase in ratings.
In May 2005, the ThinkCentre M52 and A52 desktops were announced by Lenovo. These desktops marked the first time the ThinkCentre line incorporated dual-core processors and 64-bit technology. At the time of release, Lenovo also announced plans to incorporate Intel Active Management Technology in future products.
The ThinkCentre desktops available from Lenovo are:
The ThinkCentre X1 is a mid-range all-in-one desktop computer announced by Lenovo at the 2016 International CES. The X1 is powered by a "Skylake" Intel Core i7 processor paired with 16 gigabytes of 2,333 megahertz DDR4 RAM and a variety of storage media such as hard drives, hybrid drives, and solid state drives. The display uses 23.8-inch 1920 pixel by 1080 pixel panel with an anti-glare coating. A 1080p webcam is mounted just above the screen. Five USB 3.0 ports, DisplayPort video output, and an Ethernet port come standard. A memory card reader is optional. One variant of the X1 is a display-only device.