iMac (Mid 2011)

Launched May 3, 2011, the Mid 2011 iMac carried forward the beloved slim aluminum-and-glass design established in prior generations while delivering one feature that would ripple across the entire Mac lineup in the years ahead: it was the very first Mac to include Intel's new Thunderbolt port, a high-speed data and display connector co-developed by Intel and Apple that combined PCI Express and DisplayPort signaling over a single compact connector capable of speeds up to 10Gbps, vastly outpacing USB 2.0 and even most external interfaces of the time. Powered by Intel's second-generation Core i5 and Core i7 'Sandy Bridge' processors running from 2.5GHz to 3.4GHz, this iMac generation delivered a substantial performance jump over the previous Nehalem-based chips thanks to Sandy Bridge's improved integrated graphics, better power efficiency, and higher per-core performance, alongside AMD Radeon HD graphics options that gave the higher-end configurations real gaming and creative-work credibility. The FaceTime HD camera replaced the previous iSight, doubling video call resolution to match the growing popularity of Apple's FaceTime video chat feature introduced the year before on iPhone. Reviewers praised the substantial, if evolutionary, performance gains and were especially intrigued by Thunderbolt's potential, even though in this first year very few peripherals actually existed to take advantage of it, an early-adopter tax familiar to anyone who'd watched Apple introduce new connector standards before. Target buyers spanned the full range from families and students to creative professionals drawn to the excellent, by-then-familiar 21.5-inch and 27-inch display options, the latter still one of the best screens available on any all-in-one computer. Some criticism persisted around the iMac's continued reliance on a glossy display, a debate that had simmered since the 2007 redesign, and around Apple's continued premium pricing versus PC all-in-one competitors with ostensibly similar specifications. In hindsight, the Mid 2011 iMac's Thunderbolt debut looms largest in its historical significance: though the connector took a couple of years to gain real traction with peripheral makers, it eventually became a defining feature of the entire Mac lineup for the following decade, and this iMac holds the distinction of being the very first Mac anywhere to carry it, a genuine milestone even inside an otherwise familiar, evolutionary yearly refresh.