Dell - Alienware m18 R2 vs Samsung - Galaxy Book4 Ultra
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Dell - Alienware m18 R2 | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Claimed battery life | 6 h | 11 h |
| CPU cores | 24 | 16 |
| Refresh rate | 165 Hz | 120 Hz |
| Battery | 97 Wh | 76 Wh |
| Screen size | 18 " | 16 " |
| Weight | 4.13 kg | 1.86 kg |
Between the Alienware m18 R2 and Galaxy Book4 Ultra, the Alienware m18 R2 comes out ahead in cpu cores / refresh rate, while the Galaxy Book4 Ultra wins on claimed battery life / weight. Overall, the Alienware m18 R2 scores 73.8 and the Galaxy Book4 Ultra scores 70.3 on our Mars Score.
Which should you buy?
The Alienware m18 R2 edges ahead on the Mars Score (73.8 vs 70.3), but the 3.5-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Alienware m18 R2 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 cpu cores, refresh rate, battery, among others. The single most decisive one: CPU cores — 50.00% more. 24 vs 16.
Pick the Galaxy Book4 Ultra if you care most about claimed battery life / weight. Its strongest claims are claimed battery life, weight, thunderbolt ports, among others. The single most decisive one: Claimed battery life — 83.33% more. 11 h vs 6 h.
Both ship with comparable ram, storage, 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: Dell - Alienware m18 R2 or Samsung - Galaxy Book4 Ultra?
Dell - Alienware m18 R2 leads the current Mars Score by 3.5 points.The more useful decision is the trade-off behind that result: compare screen size, weight, battery against the way you will actually use the product.
Choose Dell - Alienware m18 R2 if…
Dell - Alienware m18 R2 has the measurable edge on cpu cores, refresh rate hz, battery wh.
Choose Samsung - Galaxy Book4 Ultra if…
Samsung - Galaxy Book4 Ultra has the measurable edge on claimed battery h, weight kg, 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 Dell - Alienware m18 R2 wins
- ▲CPU cores — 50.00% more. 24 vs 16.
- ▲Refresh rate — 37.50% more. 165 Hz vs 120 Hz.
- ▲Battery — 27.63% more. 97 Wh vs 76 Wh.
- ▲Screen size — 12.50% more. 18 " vs 16 ".
Why Samsung - Galaxy Book4 Ultra wins
- ▲Claimed battery life — 83.33% more. 11 h vs 6 h.
- ▲Weight — 2.27 kg less. 1.86 vs 4.13.
- ▲Thunderbolt ports — 1.00 more. 2 vs 1.
- ▲Panel type: OLED (vs IPS).
Spec comparison
Design
| Spec | Dell - Alienware m18 R2 | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Weight | 4.13 kg | 1.86 kglead |
| Thickness | 27.4 mm | 16.5 mmlead |
| Build material | magnesium-aluminum | aluminum |
| Backlit keyboard | true | true |
| Fingerprint reader | false | truelead |
Display
| Spec | Dell - Alienware m18 R2 | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Screen size | 18 "lead | 16 " |
| Refresh rateⓘ | 165 Hzlead | 120 Hz |
| Panel typeⓘ | IPS | OLEDlead |
Performance
| Spec | Dell - Alienware m18 R2 | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| CPU | Intel Core i9-14900HX | Intel Core Ultra 9 185H |
| CPU cores | 24lead | 16 |
| GPUⓘ | NVIDIA GeForce RTX 4080 Laptop | NVIDIA RTX 4070 Laptop |
| RAMⓘ | 32 GB | 32 GB |
| Storageⓘ | 1024 GB | 1024 GB |
| Storage typeⓘ | SSD | SSD |
Battery & Ports
| Spec | Dell - Alienware m18 R2 | Samsung - Galaxy Book4 Ultra |
|---|---|---|
| Batteryⓘ | 97 Whlead | 76 Wh |
| Claimed battery life | 6 h | 11 hlead |
| USB-C portsⓘ | 2lead | 1 |
| Thunderbolt portsⓘ | 1 | 2lead |
| HDMI | true | true |
Frequently asked
Which has better battery life, Alienware m18 R2 or Galaxy Book4 Ultra?+
Galaxy Book4 Ultra claims up to 11 hours — 6h vs 11h.
Which is lighter, Alienware m18 R2 or Galaxy Book4 Ultra?+
Galaxy Book4 Ultra is lighter at 1.86 kg vs 4.13 kg.
Which has an OLED display, Alienware m18 R2 or Galaxy Book4 Ultra?+
Galaxy Book4 Ultra has an OLED display; Alienware m18 R2 uses IPS.