The Mac mini M4 (2024) and Mac mini M2 (2023) share a name and almost nothing else. One is roughly the size of a hardcover book. The other fits in one hand. Base memory doubled, the entire port layout moved from back to front, and the chassis shrank dramatically. To save you from digging through footnotes, we pulled every published number — chip, RAM, storage, ports, dimensions, weight, and power — straight from Apple’s technical spec pages and lined them up side by side, generation by generation.
Quick answer: the Mac mini M4 starts at $599 with 16GB of unified memory standard — double the 8GB baseline on the M2 base model — while dropping from 2.6 lb (1.18 kg) to 1.46 lb (0.66 kg) and swapping two rear USB-A ports for two new front-facing USB-C ports. Below, we break down exactly what changed, what stayed the same, and which generation actually fits your setup.
Quick Facts: Mac Mini M4 vs Mac Mini M2 at a Glance
| Spec | M4 Mac mini (base) | M2 Mac mini (base) |
|---|---|---|
| Starting price | $599 | $599 (at launch) |
| Base chip | Apple M4 (10-core CPU, 10-core GPU) | Apple M2 (8-core CPU, 10-core GPU) |
| Base unified memory | 16GB | 8GB |
| Base storage | 256GB SSD | 256GB SSD |
| Rear ports | 3x Thunderbolt 4, HDMI, Gigabit Ethernet | 2x Thunderbolt 4, HDMI 2.1, 2x USB-A, Gigabit Ethernet |
| Front ports | 2x USB-C, headphone jack | None (headphone jack is on the rear) |
| Dimensions (H x W x D) | 2.0 x 5.0 x 5.0 in (5.0 x 12.7 x 12.7 cm) | 1.41 x 7.75 x 7.75 in (3.58 x 19.7 x 19.7 cm) |
| Weight | 1.46 lb (0.66 kg) | 2.6 lb (1.18 kg) |
| Max continuous power | 155W | 150W |
| Release date | November 2024 | January 2023 |
Source and date: Apple’s official Mac mini technical specifications page (M4, published November 2024) and Apple’s archived Mac mini (M2, 2023) specifications page (published January 2023). All figures reflect launch-day configurations as published by Apple.
Full Spec Comparison: Every Published Number, Side by Side
Apple sells both generations in a base chip tier and a Pro chip tier — four configurations in total. Here’s the complete spec sheet for all four, so nothing gets left out.
| Spec | M2 | M2 Pro | M4 | M4 Pro |
|---|---|---|---|---|
| Chip | Apple M2, 8-core CPU / 10-core GPU | Apple M2 Pro, 10-core CPU / 16-core GPU (configurable to 12-core CPU / 19-core GPU) | Apple M4, 10-core CPU / 10-core GPU | Apple M4 Pro, 12-core CPU / 16-core GPU (configurable to 14-core CPU / 20-core GPU) |
| Neural Engine | 16-core | 16-core | 16-core | 16-core |
| Base unified memory | 8GB | 16GB | 16GB | 24GB |
| Max configurable memory | 24GB | 32GB | 32GB | 64GB |
| Base storage | 256GB SSD | 512GB SSD | 256GB SSD | 512GB SSD |
| Max configurable storage | 2TB | 8TB | 2TB | 8TB |
| Rear Thunderbolt ports | 2x Thunderbolt 4 | 4x Thunderbolt 4 | 3x Thunderbolt 4 | 3x Thunderbolt 5 |
| Front USB-C ports | None | None | 2 | 2 |
| USB-A ports | 2 (rear) | 2 (rear) | 0 | 0 |
| HDMI | 1 port, up to 8K@60Hz | 1 port, up to 8K@60Hz | 1 port | 1 port |
| Ethernet | Gigabit (10Gb configurable) | Gigabit (10Gb configurable) | Gigabit (10Gb configurable) | Gigabit (10Gb configurable) |
| Wireless | Wi-Fi 6E, Bluetooth 5.3 | Wi-Fi 6E, Bluetooth 5.3 | Wi-Fi 6E, Bluetooth 5.3 | Wi-Fi 6E, Bluetooth 5.3 |
| Dimensions (H x W x D) | 1.41 x 7.75 x 7.75 in | 1.41 x 7.75 x 7.75 in | 2.0 x 5.0 x 5.0 in | 2.0 x 5.0 x 5.0 in |
| Weight | 2.6 lb (1.18 kg) | 2.6 lb (1.18 kg) | 1.46 lb (0.66 kg) | 1.55 lb (0.7 kg) |
| Max continuous power | 150W | 185W | 155W | 155W |
| Power supply type | Built-in, standard AC cable | Built-in, standard AC cable | Built-in, standard AC cable | Built-in, standard AC cable |
| Starting price | $599 | $1,299 | $599 | $1,399 |
| Release date | January 2023 | January 2023 | November 2024 | November 2024 |
Change #1 — Base RAM Doubles From 8GB to 16GB
The single biggest jump between generations is unified memory. On Apple silicon Macs, RAM is shared between the CPU and GPU rather than split, so an 8GB baseline gets stretched thin the moment you open a few browser tabs alongside a creative app. The M2 Mac mini’s 8GB starting configuration drew consistent criticism for exactly that reason, and Apple doubled the floor to 16GB on the M4 without raising the $599 starting price.
Both generations still let you configure higher memory tiers at checkout, but the whole range shifted upward.
| Memory tier | M2 / M2 Pro | M4 / M4 Pro |
|---|---|---|
| Entry | 8GB (M2 base) | 16GB (M4 base) |
| Mid | 16GB (M2 top tier / M2 Pro base) | 24GB (M4 top tier / M4 Pro base) |
| Upper | 24GB (M2 top tier) | 32GB (M4 top tier) |
| Top | 32GB (M2 Pro top tier) | 48GB or 64GB (M4 Pro top tier) |
Memory is soldered to the logic board on every Mac mini generation, meaning neither the M2 nor the M4 can have RAM added after purchase — the tier you select at checkout is permanent.
Change #2 — Ports Move to the Front and Drop USB-A Entirely
Every prior Mac mini put all of its ports on the back panel. The M4 redesign adds two USB-C ports and a headphone jack to the front face, which makes plugging in a flash drive or a headset far less awkward when the machine sits under a monitor or on a shelf.
At the same time, Apple removed the two USB-A ports that shipped on every M2 configuration. The M4 lineup is now USB-C and Thunderbolt only — a real compatibility change for anyone still running USB-A peripherals, keyboards, or dongles without an adapter.
| Port | M2 (base) | M2 Pro | M4 (base) | M4 Pro |
|---|---|---|---|---|
| Thunderbolt (rear) | 2x Thunderbolt 4 | 4x Thunderbolt 4 | 3x Thunderbolt 4 | 3x Thunderbolt 5 |
| USB-C (front) | 0 | 0 | 2 | 2 |
| USB-A | 2 | 2 | 0 | 0 |
| HDMI | 1 | 1 | 1 | 1 |
| Headphone jack | 1 (rear) | 1 (rear) | 1 (front) | 1 (front) |
| Ethernet | Gigabit, 10Gb optional | Gigabit, 10Gb optional | Gigabit, 10Gb optional | Gigabit, 10Gb optional |
The Pro-tier Thunderbolt jump matters most if you’re connecting fast external storage or high-resolution displays. Thunderbolt 4 — used on both M2 configurations and the M4 base model — tops out at 40Gb/s. Thunderbolt 5, exclusive to the M4 Pro, is rated for up to 80Gb/s of bidirectional bandwidth, or up to 120Gb/s in one direction with Bandwidth Boost active for a single high-resolution display, per the published Thunderbolt 5 specification.
Change #3 — A Much Smaller, Lighter Chassis
The physical redesign is the most obvious change on paper. The M2 Mac mini measured 7.75 by 7.75 inches (19.7 by 19.7 cm) and stood 1.41 inches (3.58 cm) tall — a footprint about the size of a hardcover book. The M4 shrank that footprint to 5 by 5 inches (12.7 by 12.7 cm), while growing slightly taller at 2.0 inches (5.0 cm).
Running the math on Apple’s own published dimensions, the M2 chassis has a volume of roughly 1,389 cubic centimeters, while the M4 chassis comes in at roughly 806 cubic centimeters — about 42% smaller by volume, despite housing a comparable amount of internal componentry.
Weight dropped even more dramatically. The M2 weighs 2.6 lb (1.18 kg). The M4 base model weighs 1.46 lb (0.66 kg), and the M4 Pro weighs 1.55 lb (0.7 kg) — a reduction of roughly 44% versus the previous generation.
Change #4 — Base Power Rises Slightly (150W→155W), Pro Drops (185W→155W)
Both generations keep the power supply built into the machine itself; you plug a standard AC cable into the back, and there’s no external power brick to manage, unlike a Mac Studio or many mini PCs from other brands.
Apple’s published maximum continuous power figures rose slightly from 150W on the M2 to 155W on the M4 base model, while the Pro tier dropped from 185W on the M2 Pro to 155W on the M4 Pro. These are rated maximum continuous system power figures, not typical idle or everyday-use draw, which runs lower on both generations.
As with any compact computer, use only the power cable Apple includes (or a replacement rated for the same voltage and current), and never open the sealed internal power supply — there are no user-serviceable parts inside, and doing so voids the warranty and creates a shock risk.
What Didn’t Change: Price Floor and Base Storage
Not every number moved. The base Mac mini has started at $599 across both generations — Apple doubled the RAM and shrank the chassis without raising the entry price. Base SSD storage also held flat at 256GB across every base-tier configuration, M2 or M4, so anyone who needs more than casual document and browser storage should budget for a storage upgrade at checkout. Wireless specs stayed put too: Wi-Fi 6E and Bluetooth 5.3 are standard across all four configurations covered here.
Which Mac Mini Generation Should You Buy?
- Everyday browsing, email, and office work: either generation handles this fine, but the M4’s 16GB baseline gives noticeably more comfortable multitasking headroom than the M2’s 8GB baseline.
- Photo or video editing on a budget: the M4 base model’s extra memory and newer chip make it the safer buy if you can find it at or near $599.
- Heavy multi-app workflows, local AI tools, or professional creative work: look at the M4 Pro’s Thunderbolt 5 and higher memory ceiling (up to 64GB) over the M2 Pro.
- Still using USB-A peripherals like older keyboards, webcams, or dongles: the M2’s built-in USB-A ports may save you from buying adapters, though that’s a minor convenience against the M4’s other gains.
- Buying secondhand or discounted stock: a heavily discounted M2 can still be a reasonable value machine for light use, but confirm the RAM tier before buying — 8GB configurations age faster under multitasking.
Frequently Asked Questions
Does the Mac mini M4 support Apple Intelligence while the M2 doesn’t?
Both can, technically. Apple’s stated minimum requirement for Apple Intelligence features on macOS Sequoia is 8GB of unified memory, which the base M2 Mac mini meets exactly. The M4’s 16GB baseline simply gives more headroom for running Apple Intelligence features alongside other demanding apps at the same time.
Can I still buy a new Mac mini M2 in 2025?
Apple discontinued the M2 Mac mini from its own retail channels after the M4 launched in November 2024, though it may still turn up through third-party retailers or refurbished programs while stock lasts.
Is 16GB enough RAM for the Mac mini M4 base model?
For web browsing, office documents, streaming, and light photo editing, 16GB is comfortable. Heavier video editing, large local AI models, or running many virtual machines at once will benefit from the 24GB or 32GB configurable tiers.
Why did Apple remove USB-A ports from the Mac mini M4?
Apple hasn’t published a stated reason, but the shift matches its broader move across recent Mac and iPhone products toward USB-C as the single physical port standard. Anyone with USB-A-only peripherals will need a USB-C-to-USB-A adapter or hub.
Is Thunderbolt 5 on the Mac mini M4 Pro actually faster than Thunderbolt 4 on the M2 Pro?
Yes, based on published specifications. Thunderbolt 4 is rated for up to 40Gb/s. Thunderbolt 5 is rated for up to 80Gb/s bidirectional, or up to 120Gb/s in one direction with Bandwidth Boost active, according to the published Thunderbolt 5 specification.
Can I upgrade RAM or storage myself later on either Mac mini generation?
No. Unified memory is soldered to the logic board on both the M2 and M4 Mac mini, so the memory tier chosen at checkout is permanent. Storage isn’t a standard user-swappable module on either generation either, though Apple-authorized service providers may be able to perform certain repairs.
Does the smaller M4 Mac mini overheat under heavy sustained load?
Apple’s published materials describe a redesigned internal fan and heat-spreading structure meant to support sustained performance in the smaller enclosure, though how it behaves under real heavy-load conditions ultimately depends on independent thermal testing that hasn’t been published yet.
Did the Mac mini ever have an SD card slot?
No. An SD card slot has never been a standard Mac mini port on any generation, including the M2 and M4 models — that feature has historically been reserved for certain MacBook Pro configurations.
Reviewed and edited by Jason Paik. Spotted an error? Tell us — we verify and correct. See how we create content.