Dell offers two battery sizes in 42WHr and 60WHr. It is strongly encouraged to get the larger one, which is what was used in this review. In addition to these inadequacies (the significance of which is quite subjective), the 7280 retains a couple of the (albeit relatively minor) flaws of its predecessor. The display panel, while bright and high-resolution, remains rather dull in terms of color gamut coverage, and the touchpad is still merely average (though it does provide two physical hardware buttons). And we’re sorry to report that our review unit absolutely possesses the venerable CPU whine symptoms that many have encountered on some previous Dell Ultrabooks. Storage options for the 7280 range from 128 GB up to 1 TB in capacity, all of which are M.2 form factor solid-state drives (the only storage slot available in this tiny machine). Some of these options are conventional M.2 SATA (like ours) and others are NVMe/PCIe drives, since the Latitude supports both. Our particular drive was a 256 GB M.2 SATA (“Class 20” as Dell refers to it) drive: a SanDisk X400 M.2 2280 model specifically. It’s a very fast contender, recording sequential read and write speeds of 499.91 MB/s and 473.31 MB/s, respectively, in AS SSD, as well as fairly good 4K-64 speeds of 354.58/119.14 MBs (read/write) on top of that. Discrepancies are obvious when compared to NVMe drives such as the HP EliteBook 820 G4’s Samsung PM951, but nevertheless, most users will never know the difference. The section belowprovides links to articles that contain information about the different hardware on your system. They can help you to troubleshoot any problems that are identified using the above diagnostics. There are also general "How to" articles that can help with tasks, for example like updating the BIOS or upgrading a hard drive. AC Adapter and Battery When you're ready for a break from work, the Latitude 7280 can handle some modest gaming. The system ran Dirt 3 (set to 1920 x 1080 pixels and medium graphics) at 46 frames per second, surpassing our 30-fps playability threshold and the 35-fps ultraportable average. Dell Latitude 7280 battery life

The Latitude emits up to 289 nits (a measure of brightness), which is higher than the 239-nit EliteBook and the 184-nit ThinkPad, but just below the 303-nit average for ultraportable notebooks. That's bright enough for 45-degree viewing angles to the left or right, where it darkens just slightly. Dell Latitude 7280 keyboard and touchpad Just under the front edge of the keyboard are the 7280's stereo speakers, which pump out enough sound to fill a midsized conference room. Audio is good at low volumes, though predictably short on booming bass, but grows ragged as you crank the volume past 75 percent. At 100 percent, it'll remind you of the first AM radio you had as a kid. That's not true of its 3DMark graphics scores—356 for the Fire Strike subtest, compared to 401 for the Razer Blade Stealth and 429 for the ZenBook 3—but that simply underscores that neither the Latitude nor any other integrated-graphics business laptop is built for 3D arcade or shoot-'em-up action. Casual and solitaire games, not the latest fast-blast titles, are its pastimes of choice. But beyond these negatives, there are also quite a few positives to take into account. For starters, the 7280’s build quality is impeccable, with hardly any flex and a wonderfully ergonomic feel despite its thin and light profile. Battery life is positively outstanding. The keyboard is among the best in its class. The machine is practically silent (apart from the CPU noise) during most usage, and it still manages reasonable temperatures. And performance is blisteringly fast in general system operation, with synthetic application benchmarks putting most others to shame.The keyboard on the Latitude 7280 is one of the best Dell has created. Featuring a large 1.7 millimeters of key travel the 7280 beats out the XPS 13 and XPS 15, which only have 1.3mm. It makes a huge difference. The original SATA protocol was designed to maximize the performance of platter (physical spinning) hard drives. With the proliferation of SSD drives, the SATA storage management protocol has become a limiting factor. The NVMe (Non-Volatile Memory) protocol has been designed for solid state drives and uses the PCIe bus for optimal performance. An M.2 drive may support SATA or PCIe/NVMe but not both. Depending on the drive, and what the computer can support, not all M.2 drives work in all computers.

Overall, I'm impressed with the endurance of the Latitude 7280. There is no doubt that you can leave the AC charger home when taking this out for the day and even night. Heat and noise Overall, I enjoy the size, portability, and feel of the Latitude 7280. Sure, it's "businessy," but that doesn't mean it's dull. Ports, Ethernet and mobile broadband Although the FCC information and device ID are stamped on the bottom (and not hidden) the overall aesthetic of the latitude 7280 is spotless, not flashy, and it's very professional. It's not the type of device that draws attention in a room, which is perfect for its professional audience.Hard drive retention: Hard drive retention is not available on models with a soldered hard drive, including XPS 9315 2in1, Chromebooks or Venue tablets, except the Venue 11 Pro.

The 256GB solid-state drive in the Latitude 7280 we tested was faster than a traditional hard drive, but other SSDs outpaced it. So although the Latitude finished our file-transfer test in 53 seconds for a speed of 96 MBps, faster speeds were achieved by the EliteBook's 256GB SATA-3 SSD (145.4 MBps), the ThinkPad's 256GB SSD (157.1 MBps) and the ultraportables average (182.7 MBps). The Latitude 7280's integrated Intel HD 620 graphics earned it a fairly pedestrian score of 56,318 on the Ice Storm Unlimited graphics test -- very similar to the 56,633 average for ultraportable notebooks. The EliteBook (Intel HD 525) and the ThinkPad (Intel HD 520) earned slightly higher marks of 59,071 and 59,489, respectively. It should not be surprising that the 7280's screen quality is below the high-end consumer XPS 13. Available in Full HD (1920 x 1080) the 7280 can go as low as HD (1366 x 768) for companies buying this in bulk and who want to save some money. The display is only 12.5", which is interesting because of the XPS 13, which is 13.3" with its Infinity Edge IGZO panel in the same frame.

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