Apple Introduces the M1 iMac and New iPad Pro

Apple introduced a redesigned 24-inch iMac and a new iPad Pro in April 2021, both using the M1 processor announced at the Mac event in November 2020. The iMac, priced from $1,299, replaced the 21.5-inch and 27-inch Intel models with a single M1 design just 11.5 mm thick — thinner than many smartphones — in seven colors. It included a 24-inch 4.5K Retina display, a 1080p front camera, and a six-speaker sound system. The M1 Mac mini and MacBook Air had already launched; adding the iMac and iPad Pro showed the chip could span from compact desktops to tablets with the same architecture.

M1 combined four high-performance and four efficiency CPU cores, up to eight GPU cores, a 16-core Neural Engine, hardware media encode/decode, and 8 or 16 GB of unified LPDDR4X memory in one system-on-chip, all on a 5nm TSMC process. The iPad Pro came in 11-inch ($799) and 12.9-inch ($1,099) sizes; the larger model used a Liquid Retina XDR mini-LED display with 2,596 local dimming zones and up to 1,600 nits peak brightness. Both iPad Pro models added Thunderbolt/USB 4 via the USB-C port — the first tablet to support Thunderbolt.

That iPad Pro Thunderbolt port illustrated the mismatch that became central to the product discussion. The M1 chip gave the tablet laptop-class CPU and memory bandwidth, and Thunderbolt allowed connecting high-speed external displays or storage. iPadOS, however, still limited background processes, prevented general-purpose code execution without App Store distribution, and constrained multitasking in ways macOS did not. The hardware demonstrated Apple could share silicon across form factors; the software showed that shared silicon does not imply shared capability.

Why This Moment Mattered

The event is useful to read as a platform signal, not only as a product announcement. In the short term, it gave users and developers something concrete to react to. In the longer term, it became part of a larger pattern in hardware, computing, history: hardware, software, services, and user expectations were all changing at the same time.

A good technology milestone usually matters for more than one audience. Enthusiasts notice the specifications or the interface first. Developers ask what new assumptions they can make. Companies look at cost, compatibility, and strategy. Ordinary users mostly notice whether the result makes their devices faster, easier, safer, or more useful.

The Broader Context

This period of computing was shaped by several overlapping transitions: faster networks, more capable mobile devices, cloud infrastructure, stronger security expectations, and software that changed continuously after release. Against that background, the milestone was not an isolated headline. It was one piece of a much larger movement away from static products and toward connected platforms.

That context helps explain why some announcements that looked modest at the time became important later. A browser feature, processor change, development tool, or platform policy can alter what future products are able to assume. Once enough users, developers, and vendors adapt, the new assumption becomes normal.

Looking Back

The value of revisiting the moment is that it shows how technology history is built from many medium-sized steps. Some are celebrated immediately, while others become meaningful only after the ecosystem catches up.

Looking back also keeps the story balanced. Progress usually brings tradeoffs: performance against power use, openness against consistency, convenience against control, and speed against stability. The most interesting milestones are the ones that reveal those tradeoffs clearly. This one belongs in that category because it helps explain not just what changed, but why the direction of computing kept moving the way it did.