MacBook Pro, late 2023 · Apple M3 Pro · 18 GB unified memory
Start with a closed aluminium slab on a plinth. Pick it up, turn it over, open it. Then take it apart, and keep going down through the logic board and the package to a die with thirty-seven billion transistors, where you can run real kinds of work and watch the chip respond.
The curator is a synthesised voice with captions. You can mute, replay or silence it at any time from the bar at the bottom of the screen.
Unmarked
Published by Apple: tech specs, newsroom, user guide, environmental report or repair manual.
reported
Measured or observed by independent teardowns, die analyses and reviews. Credible, not official.
derived
Calculated here from published figures. The working is shown.
unconfirmed
Nobody has published a figure we could verify. We say so instead of guessing.
Assembling the model…
Drag to orbit · pinch or +/− to zoom · WASD or arrow keys after clicking the model · tap a part or a label to learn about it
Level 0 · scale 1 : 1
The Object
Before it is a computer it is a piece of machined aluminium. Walk around it.
First impressions
A slab, milled from one block
The enclosure is a unibody shell: the top case and bottom case are machined aluminium, and Apple states the enclosure uses 100 percent recycled aluminium. Closed, the 14-inch model is 15.5 mm thick; the 16-inch is 16.8 mm.
Width
14″31.26 cm16″35.57 cm
Depth
14″22.12 cm16″24.81 cm
Height
14″1.55 cm16″1.68 cm
Weight, M3 Pro
14″1.61 kg16″2.14 kg
Space Black is offered only with M3 Pro and M3 Max. Apple describes a breakthrough anodisation seal that reduces fingerprints; Silver is the alternative. Use the swatch under the model to compare.
Pick it up, turn it over
The underside is a quiet instrument panel
Four rubber feet lift the case so air can reach the intake slots along its lower edges. Warm air leaves through the vent along the hinge, which doubles as the window for the Wi-Fi and Bluetooth antennas.
The bottom case is held by screws and, on this generation, Apple's own repair manual is public: you can follow the same steps as an Apple technician to reach the battery and the fans.
Regulatory model numbers are engraved here: A2992 for the 14-inch with M3 Pro or M3 Max, and A2991 for the 16-inch.FCC archive
The edges
Six ports and a card slot, no adapters
Left: MagSafe 3, two Thunderbolt 4, and a 3.5 mm headphone jack. Right: an SDXC card slot, a third Thunderbolt 4 port and HDMI. The base M3 model has only two USB-C ports; the M3 Pro gets three.
Lift the lid and the screen wakes. The Liquid Retina XDR panel is mini-LED backlit: thousands of tiny LEDs behind the LCD dim and brighten in local zones, so black stays black next to a bright highlight.
Remove the bottom case and the machine becomes a floor plan: a battery that fills most of it, two fans, six speakers, and a logic board smaller than you expect.
The exploded view
Every part, lifted apart
This is the laptop separated along the directions its parts come out in the repair manual. Each numbered label is a part: tap one, or tap the model itself. The Take apart slider under the model reassembles it.
Battery
Most of the inside is battery
Soft lithium-polymer pouch cells fill the front of the chassis, either side of the trackpad bay, held by stretch-release adhesive strips. The 14-inch is reported to use six cells, three in series and two in parallel.TechInsights, iFixit Apple ships the battery as part of the top case.
Capacity
14″72.4 Wh (see note)16″100 Wh
Movie playback
14″up to 18 h16″up to 22 h
Wireless web
14″up to 12 h16″up to 15 h
Adapter in box
14″70 W (11-core) or 96 W (12-core)16″140 W
Apple's 14-inch M3 Pro page lists a 72.4 Wh battery while its footnote states an actual rating of 69.6 Wh, and the base M3 page lists 70 Wh. We show Apple's headline figure and flag the conflict.
A 100 Wh ceiling is not an accident: it is the limit airlines generally allow in the cabin without approval, which is why the 16-inch stops there.context
Thermals
Two blowers and a copper heat sink
The M3 Pro models have two centrifugal fans at the rear corners, pulling air through the chassis, across the heat-sink fins and out along the hinge. At light loads they often do not spin at all: on the 14-inch they wait until the chip passes about 100 °C.reviews The 14-inch base M3 has a single fan; that is one reason the M3 Pro can sustain heavier work in the same enclosure.
The 16-inch has more room for fins and air, so under long loads it tends to run cooler and quieter than the 14-inch with the same chip.reviews Try it in the chip laboratory at Level 4.
The 16-inch environmental report notes 100 percent recycled copper in the heat sink's finstack, a first for Apple.
Sound
Six speakers that cancel their own shake
Two pairs of force-cancelling woofers and two tweeters sit either side of the keyboard. Each woofer pair is mounted back to back so that their mechanical forces oppose: bass without the chassis buzzing.
Three studio-quality microphones with directional beamforming sit near the top of the keyboard deck, and the headphone jack drives high-impedance headphones without an external amplifier.
Touch
A trackpad that does not move
The Force Touch trackpad is a sheet of glass on pressure sensors. When you "click", a Taptic Engine taps back; the whole surface is a button. The backlit Magic Keyboard has 78 keys (U.S.) or 79 (ISO), including 12 full-height function keys and an inverted-T of arrows. Touch ID is the top-right key.
The lid
The display is its own machine
The lid carries the mini-LED backlight, the LCD, the camera, and wireless antennas routed near the hinge. Its cables pass through the hinge to the logic board.
The way down
The logic board
Between the fans, under the keyboard, is a board smaller than a paperback. Everything the laptop does passes through it. That is where we go next.
What each opening can drive. Build a desk, and the guide checks it against what the M3 Pro can actually do.
Level 1 · annex
The display explorer
Three things make this panel unusual: how bright it gets and when, how its refresh rate breathes, and the reference modes that make it behave like a calibrated studio monitor.
Level 2 · the board
The Logic Board
One wide board runs along the hinge, cut away at both ends to cradle the fans. The processor, graphics and memory are a single package at its centre; most of what surrounds it exists to give that package power, a way to store things and a way out to the world. Tap a component, or follow a signal across the board.
Level 3 · millimetres
The Package
Zoom in on the square at the centre of the board. It is not just a chip: it is the M3 Pro die and its eighteen gigabytes of memory on one substrate, under one heat sink. How close they sit, and how wide the road between them is, decides much of how this laptop behaves.
Level 4 · the die
The Die
The bottom of the descent: a sliver of silicon holding thirty-seven billion transistors, organised into performance and efficiency cores, a GPU, a Neural Engine and media engines. This level is a laboratory. Give the chip work and watch where it goes.
The chip laboratory
Run something. Watch it move through the silicon.
Choose work below. A simulation core compiled to WebAssembly schedules it across the cores and engines, accounts for every gigabyte of memory, shares out the bandwidth and heats the die. It is a teaching model built from published figures, not a benchmark; its constants and their sources are listed at the bottom of the page.
Level 4 · beside it
M3, M3 Pro, M3 Max
The same architecture at three sizes. The M3 Pro is not a faster M3 or a smaller Max: it is its own design, and its choices explain how this machine behaves.
The ascent
Living with it
Back up to the desk, knowing what is underneath. Practical guidance for getting the most from an M3 Pro with 18 GB.