Can MacBook Air M3 drive two external monitors?

Only with the lid closed (clamshell mode). With lid open, it supports one external display plus the built-in screen.

Does MacBook Air throttle?

Yes, under sustained heavy loads (video export, 3D render) the passive cooling hits thermal limits and reduces clock speeds. For burst workloads it's fine.

Is Pro worth the extra £500?

Only if you need ProMotion 120Hz, sustained performance, 2 external displays, or the extra ports. For most users, the Air M3 at £1,099 is the better buy.

What about the M3 Pro/Max chips?

This comparison is base M3 only. M3 Pro/Max MacBook Pro models are significantly faster for pro workflows but start at £1,999. Those are for serious video/3D/ML work.

Mac•Comparison

MacBook Air M3 vs MacBook Pro M3: The Ultimate Comparison

Apple's M3 chips bring the Air and Pro closer than ever. We test performance, display, battery, and thermals to find your best Mac.

Quick Summary: MacBook Air M3 is the best value Mac for 90% of users — silent, light, great screen, all-day battery. Get MacBook Pro M3 only if you need ProMotion, sustained heavy workloads (video/3D), or 2 external displays.

Specs at a Glance

Specification	MacBook Air M3	MacBook Pro M3
Chip	M3 (8C CPU/10C GPU)	M3 (8C CPU/10C GPU)
Display	13.6" Liquid Retina, 60Hz	14.2" Liquid Retina XDR, 120Hz
Brightness	500 nits	1000 sustained / 1600 peak
Cooling	Fanless (passive)	Active fan
External Displays	1 (2 with lid closed)	2
Ports	2x TB4, MagSafe, 3.5mm	3x TB4, MagSafe, HDMI, SDXC, 3.5mm
Battery (web)	18 hours	18 hours
Weight	1.24 kg	1.55 kg
Fan Noise	Silent	Audible under load
Start Price	£1,099	£1,599
Base Config	8GB/256GB	8GB/512GB
Colors	4 (Midnight, Starlight, Silver, Space Gray)	2 (Silver, Space Black)

Pros

✓M3 chip brings major GPU improvements

✓Air is fanless and completely silent

✓Pro has 120Hz ProMotion display

✓Pro supports 2 external displays

✓Pro has better sustained performance

✓Both offer 18h+ battery life

Cons

✗Air limited to 1 external display

✗Air has thicker bezels, no ProMotion

✗Pro is heavier and has fan noise under load

✗Base Pro M3 has only 8GB/512GB

✗Pro costs £300+ more

✗Air throttles under sustained loads

Our Verdict

MacBook Air M3 is the best value Mac for 90% of users — silent, light, great screen, all-day battery. Get MacBook Pro M3 only if you need ProMotion, sustained heavy workloads (video/3D), or 2 external displays.

Students and general productivity (Air)

Video editors, 3D artists (Pro)

Multi-monitor desk setups (Pro)

Best for

Students and general productivity (Air)
Video editors, 3D artists (Pro)
Multi-monitor desk setups (Pro)

✕Avoid if

✕Need 2+ external monitors (Air fails)
✕Sustained heavy compute (Air throttles)
✕Want best display (Pro wins)

Common Questions

: Only with the lid closed (clamshell mode). With lid open, it supports one external display plus the built-in screen.
: Yes, under sustained heavy loads (video export, 3D render) the passive cooling hits thermal limits and reduces clock speeds. For burst workloads it's fine.
: Only if you need ProMotion 120Hz, sustained performance, 2 external displays, or the extra ports. For most users, the Air M3 at £1,099 is the better buy.
: This comparison is base M3 only. M3 Pro/Max MacBook Pro models are significantly faster for pro workflows but start at £1,999. Those are for serious video/3D/ML work.

More Comparisons

iPhone 16 vs 15

Upgrade worth it?

Read comparison

AirPods Pro vs AirPods 3

ANC showdown

Read comparison