Dell XPS 16 Laptop Based on Intel Panther Lake Breaks Endurance Records
A surprise performance shift: the 2026 Dell XPS 16 trims energy use to levels you’d expect from lightweight tablets or ARM machines. The switch to Intel Core Ultra Series 3 (Panther Lake) chips is the headline, but the results feel almost contrary to the laptop form factor.
NotebookCheck’s measurements put one configuration — Core Ultra 5 325 with an IPS panel (1920×1200) — at just 1.5 W idle when brightness is at its minimum. Rivals? Many of them draw several times that under the same conditions, so this isn’t a small margin.
On a web‑surfing loop over Wi‑Fi at 150 nits the XPS ran for 26 hrs 38 mins, topping the chart for 16‑inch Windows laptops. A key trick: the new LCD with VRR, which can drop to 1 Hz in static situations (reading, static pages), slashing display drain.
Dell got there despite shaving the battery to 70 Wh. That outcome lends credence to Intel’s claims about Panther Lake cutting power use — or at least suggests the architecture is delivering in real machines. In practice the XPS 16 now vies with MacBook Pro models running M4/M5 silicon, and in some tests it even beats them. Dell’s own marketing puts the figure at "live" up to 31 hours on a single charge.