Apple - MacBook Air 15 M4 vs Samsung - Galaxy Book4 Ultra
Between the MacBook Air 15 M4 and Galaxy Book4 Ultra, the MacBook Air 15 M4 comes out ahead in claimed battery life / weight, while the Galaxy Book4 Ultra wins on ram / storage. Overall, the MacBook Air 15 M4 scores 58.9 and the Galaxy Book4 Ultra scores 70.1 on our Mars Score.
Which should you buy?
The Galaxy Book4 Ultra is the clear pick on raw spec strength, leading by 11.2 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the MacBook Air 15 M4 if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. The biggest gaps in its favor are claimed battery life, weight.
Pick the Galaxy Book4 Ultra if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are ram, storage, refresh rate, among others.
Both ship with comparable thunderbolt ports, backlit keyboard, so those specs do not separate the two — focus on the differences below.
Bottom line: the Galaxy Book4 Ultra is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Apple - MacBook Air 15 M4 wins
- ▲Claimed battery life — 63.64% more. 18 h vs 11 h.
- ▲Weight — 0.35 kg less. 1.51 vs 1.86.
Why Samsung - Galaxy Book4 Ultra wins
- ▲RAM — 100.00% more. 32 GB vs 16 GB.
- ▲Storage — 100.00% more. 1024 GB vs 512 GB.
- ▲Refresh rate — 100.00% more. 120 Hz vs 60 Hz.
- ▲CPU cores — 60.00% more. 16 vs 10.
- ▲Battery — 15.15% more. 76 Wh vs 66 Wh.
- ▲Screen size — 4.58% more. 16 " vs 15.3 ".
- ▲Panel type: OLED (vs IPS).
Spec comparison
Design
| Spec | Apple - MacBook Air 15 M4 | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Weight | 1.51 kglead | 1.86 kg |
| Thickness | 11.5 mmlead | 16.5 mm |
| Build material | aluminum | aluminum |
| Backlit keyboard | true | true |
| Fingerprint reader | true | true |
Display
| Spec | Apple - MacBook Air 15 M4 | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Screen sizeⓘ | 15.3 " | 16 "lead |
| Refresh rateⓘ | 60 Hz | 120 Hzlead |
| Panel typeⓘ | IPS | OLEDlead |
Performance
| Spec | Apple - MacBook Air 15 M4 | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| CPU | Apple M4 | Intel Core Ultra 9 185H |
| CPU cores | 10 | 16lead |
| GPUⓘ | Apple M4 10-core GPU | NVIDIA RTX 4070 Laptop |
| RAMⓘ | 16 GB | 32 GBlead |
| Storageⓘ | 512 GB | 1024 GBlead |
| Storage typeⓘ | SSD | SSD |
Battery & Ports
| Spec | Apple - MacBook Air 15 M4 | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Batteryⓘ | 66 Wh | 76 Whlead |
| Claimed battery life | 18 hlead | 11 h |
| USB-C ports | 2lead | 1 |
| Thunderbolt portsⓘ | 2 | 2 |
| HDMI | false | truelead |
Frequently asked
Which has better battery life, MacBook Air 15 M4 or Galaxy Book4 Ultra?+
MacBook Air 15 M4 claims up to 18 hours — 18h vs 11h.
Which is lighter, MacBook Air 15 M4 or Galaxy Book4 Ultra?+
MacBook Air 15 M4 is lighter at 1.51 kg vs 1.86 kg.
Which has more RAM, MacBook Air 15 M4 or Galaxy Book4 Ultra?+
Galaxy Book4 Ultra offers 32GB of RAM.
Which has an OLED display, MacBook Air 15 M4 or Galaxy Book4 Ultra?+
Galaxy Book4 Ultra has an OLED display; MacBook Air 15 M4 uses IPS.
Spec-level deep dives
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