MacBook Pro M4 vs M3: What's Actually Different?

Apple shipped the 14-inch MacBook Pro with M4 in late 2024, one year after the M3 version. The design is nearly identical. The price is the same. The question, as always: is the new chip worth buying a new laptop for?

Short answer: if you don't already own the M3, buy the M4. If you do own the M3, skip it. Here's the long answer.

Performance: M4 vs M3

The M4 chip brings a 10-core CPU (4 performance + 6 efficiency) compared to the M3's 8-core (4+4). The GPU goes from 10 cores to 10 cores — same count, but the M4's cores are architecturally improved. In real-world benchmarks:

• Single-core performance: 15-20% faster on the M4. You'll notice this in app launches, web browsing, and single-threaded tasks.
• Multi-core performance: 25-30% faster. This matters for video editing, code compilation, and anything that can use all cores.
• GPU performance: 20-25% faster. Noticeable in 3D rendering, gaming, and video export.
• Machine learning: The M4's neural engine is roughly 2x faster than the M3's, which matters for local AI inference.

These are meaningful gains in absolute terms but not the kind of leap that makes an M3 feel slow. The M3 MacBook Pro is still a fast, capable machine. The M4 just does the same things a bit quicker.

Display: one real upgrade

The M4 MacBook Pro 14-inch gets a brighter display: 1,000 nits SDR sustained (up from 600 on the M3) and the same 1,600 nits peak HDR. Both are Liquid Retina XDR mini-LED panels at 120Hz ProMotion. The brightness improvement is genuinely visible when working outdoors or near windows.

Ports and connectivity

The M4 base model now includes three Thunderbolt 4 ports (up from two on the M3 base). This is the single most practical upgrade: you no longer need a dongle if you have a monitor, a drive, and a charger plugged in. The M4 also adds Thunderbolt 5 on the M4 Pro and M4 Max configurations.

RAM: the real headline

The base M4 MacBook Pro ships with 16 GB of unified memory, up from the M3's 8 GB. This is the upgrade that matters most for longevity. 8 GB was tight in 2023; it's a liability in 2025. The M4's 16 GB base means you no longer need to spec up just to have a comfortable amount of RAM.

Battery life

Both are rated for ~17 hours of video playback. In real-world mixed use, the M4 ekes out about 30-60 minutes more thanks to the more efficient chip. Not a selling point on its own, but a nice bonus.

Who should buy the M4

• Anyone buying their first MacBook Pro. The M4 is strictly better at the same price. The 16 GB base RAM alone justifies it.
• M1 or M2 owners. The jump from M1 to M4 is substantial — 2x+ multi-core, dramatically better display, three TB ports.
• People who configured an M3 with 16 GB. The M4 base gives you 16 GB standard, so you save the upgrade cost.

Who should skip

• M3 MacBook Pro owners. Unless you maxed out your RAM at 8 GB and regret it, the performance gains alone don't justify a new laptop after one year. Wait for the M5.
• M2 Pro or M3 Pro owners. These are already fast machines with 16+ GB. The base M4 is not faster than an M3 Pro.

Bottom line

The M4 MacBook Pro is the best value Apple laptop you can buy in 2026, thanks to the 16 GB base RAM and three Thunderbolt ports. But it's an evolution, not a revolution. If you're coming from an M1 or earlier, it's a no-brainer. If you're on an M3, wait.

For detailed specs, check our MacBook Pro 14 M4 product page and our MacBook Pro 14 M3 product page. Our MacBook Air vs Pro guide covers whether you need the Pro at all.