Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | HP - OmniBook Ultra 14 | Apple - MacBook Air 15 M4 |
|---|---|---|
| RAM | 32 GB | 16 GB |
| Storage | 1024 GB | 512 GB |
| CPU cores | 12 | 10 |
| Claimed battery life | 21 h | 18 h |
| Screen size | 14 " | 15.3 " |
| Battery | 68 Wh | 66 Wh |
Between the OmniBook Ultra 14 and MacBook Air 15 M4, the OmniBook Ultra 14 comes out ahead in ram / storage, while the MacBook Air 15 M4 wins on screen size / thunderbolt ports. Overall, the OmniBook Ultra 14 scores 66.1 and the MacBook Air 15 M4 scores 63.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (66.1 vs 63.3). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the OmniBook Ultra 14 if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. The biggest gaps in its favor are ram, storage, cpu cores, among others. The single most decisive one: RAM — 100.00% more. 32 GB vs 16 GB.
Pick the MacBook Air 15 M4 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 screen size, thunderbolt ports. The single most decisive one: Screen size — 9.29% more. 15.3 " vs 14 ".
Both ship with comparable refresh rate, panel type, backlit keyboard, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: HP - OmniBook Ultra 14 or Apple - MacBook Air 15 M4?
HP - OmniBook Ultra 14 leads the current Mars Score by 2.8 points.The more useful decision is the trade-off behind that result: compare screen size, ram, weight, battery against the way you will actually use the product.
Choose HP - OmniBook Ultra 14 if…
HP - OmniBook Ultra 14 has the measurable edge on ram gb, storage gb, cpu cores.
Choose Apple - MacBook Air 15 M4 if…
Apple - MacBook Air 15 M4 has the measurable edge on screen size in, port thunderbolt count.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why HP - OmniBook Ultra 14 wins
- ▲RAM — 100.00% more. 32 GB vs 16 GB.
- ▲Storage — 100.00% more. 1024 GB vs 512 GB.
- ▲CPU cores — 20.00% more. 12 vs 10.
- ▲Claimed battery life — 16.67% more. 21 h vs 18 h.
- ▲Battery — 3.03% more. 68 Wh vs 66 Wh.
- ▲Weight — 0.01 kg less. 1.5 vs 1.51.
Why Apple - MacBook Air 15 M4 wins
- ▲Screen size — 9.29% more. 15.3 " vs 14 ".
- ▲Thunderbolt ports — 2.00 more. 2 vs 0.
Spec comparison
Design
| Spec | HP - OmniBook Ultra 14 | Apple - MacBook Air 15 M4 |
|---|---|---|
| Weight | 1.5 kglead | 1.51 kg |
| Thickness | 17 mm | 11.5 mmlead |
| Build material | aluminum | aluminum |
| Backlit keyboard | true | true |
| Fingerprint reader | true | true |
Display
| Spec | HP - OmniBook Ultra 14 | Apple - MacBook Air 15 M4 |
|---|---|---|
| Screen size | 14 " | 15.3 "lead |
| Refresh rateⓘ | 60 Hz | 60 Hz |
| Panel typeⓘ | IPS | IPS |
Performance
| Spec | HP - OmniBook Ultra 14 | Apple - MacBook Air 15 M4 |
|---|---|---|
| CPU | AMD Ryzen AI 9 HX 375 | Apple M4 |
| CPU cores | 12lead | 10 |
| GPUⓘ | AMD Radeon 890M | Apple M4 10-core GPU |
| RAMⓘ | 32 GBlead | 16 GB |
| Storageⓘ | 1024 GBlead | 512 GB |
| Storage typeⓘ | SSD | SSD |
Battery & Ports
| Spec | HP - OmniBook Ultra 14 | Apple - MacBook Air 15 M4 |
|---|---|---|
| Batteryⓘ | 68 Whlead | 66 Wh |
| Claimed battery life | 21 hlead | 18 h |
| USB-C portsⓘ | 2 | 2 |
| Thunderbolt portsⓘ | 0 | 2lead |
| HDMI | false | false |
Frequently asked
Which has better battery life, OmniBook Ultra 14 or MacBook Air 15 M4?+
OmniBook Ultra 14 claims up to 21 hours — 21h vs 18h.
Which is lighter, OmniBook Ultra 14 or MacBook Air 15 M4?+
OmniBook Ultra 14 is lighter at 1.5 kg vs 1.51 kg.
Which has more RAM, OmniBook Ultra 14 or MacBook Air 15 M4?+
OmniBook Ultra 14 offers 32GB of RAM.
Which has an OLED display, OmniBook Ultra 14 or MacBook Air 15 M4?+
Neither model has an OLED display.