DT in Spanish could receive a commission if you buy a product from the siteIf you're looking for a highly portable laptop, you'll likely limit your search to 13-inch models.However, if you're looking for power, you're probably looking at 15-inch laptops.Perhaps the best example is the Dell XPS 15, a popular laptop that packs powerful components into a relatively small chassis thanks to relatively small screen bezels.But the offer is broader and we face the Dell XPS 15 vs.HP Specter x360 15 for you to choose the best.We'll be blunt: the Specter x360 15 is the flashiest laptop around right now.HP describes this version as "gem cut," and for good reason: Every edge, along the lid, the chassis, even the keyboard deck, is cut at angles like a fine jewel. .A new and more exciting Poseidon Blue color joins the more subdued Dark Ash Silver to create a truly magnificent design.The XPS 15 is attractive, too, with a more conservative black, silver, and carbon fiber aesthetic that's probably better suited to a conference room.Both laptops are built around 15.6-inch screens, but the XPS 15 enjoys much smaller bezels and thus a significantly smaller chassis.The Dell is lighter at 2.04kg versus its rival's 2.18kg.Both laptops are equally robust.Additionally, both enjoy large keyboards with plenty of travel and precise feel, though we prefer the HP for its springier and slightly deeper mechanism.The XPS 15, however, has a much better touchpad.It's larger than the one on the Specter x360 and supports the Precision Touchpad protocol, which is far superior to Microsoft's.HP continues to use Synaptics drivers which are not as smooth.On connectivity, there's a tie: The Specter x360 15 has two USB-C ports with 40 gigabits per second Thunderbolt 3 support, a single USB-A 3.1 port, and a full-size HDMI port.The XPS 15 is similar, but with two USB-A 3.1 ports, a single Thunderbolt 3-compatible USB-C port, and a full-size HDMI port.We give HP the slightest edge for its additional Thunderbolt 3 port.Additionally, the Specter x360's Intel wireless chip supports Bluetooth 5.0 versus Dell's Bluetooth 4.2, and the HP also supports two external 5K displays.The Specter x360 15 has a more prominent design and better connectivity, but the XPS 15 is noticeably smaller.Both 15-inch notebooks meet the performance expectations for their category, thanks to the very fast 8th generation Core 887H CPU.It's a 45-watt six-core processor that shines for high-end productivity and creative tasks.In our tests, the XPS 15 and Specter x360 15 were similar in performance to their rivals.The same goes for gaming, where the laptops share the same hardware: they both use the Nvidia GeForce GTX 1050 Ti Max-Q, a powerful engine that shines in 1080p gaming.As long as you're willing to keep graphics details at reasonable settings, you'll be able to play most modern games on both the XPS 15 and Specter x360 15.It is in its screens where we find differences: the Specter x360 equips a very good 4K IPS touch screen (3,840 x 2,160) that offers good contrast, a medium color range (73 percent of Adobe RGB) with good precision and just below of our favorite 300 nits of brightness.At this time, there is no Full HD option.The XPS 15, on the other hand, has a superior 4K touchscreen (non-pen compatible) that offers significantly better contrast, a wide color gamut (97 percent of AdobeRGB), and excellent accuracy.It's also brighter at over 400 nits, and there's a Full HD option I'd recommend if you want to save on battery life.Each of these machines provides the kind of performance you might find in a larger laptop.The XPS 15 has a screen, though, and it's aimed at its intended segment: creative types who edit great photos and videos.Both laptops will get OLED displays soon, though the HP will stick to the version with a slower U-series processor and Nvidia MX150 CPU.That means professionals who want a stunning display and the best performance will still prefer the XPS 15.Neither of these machines is particularly light, both weighing over 2kg, and while the XPS 15 is smaller, both will take up a bit of space in your backpack.That makes battery life a more important consideration.Dell racked up 97 watt hours on the XPS 15, while the Specter x360 maintains a respectable 82 watt hours.However, you can buy the XPS 15 with a Full HD screen if you're looking for longer battery life.In our tests, the Specter x360 15 performed very well for a laptop with a 45-watt CPU and a 4K display.It lasted eight and a half hours on our web browsing test and 12.5 hours on our local video loop test.The XPS 15 Full HD, meanwhile, gets in around 10.5 hours browsing the web and 14.5 hours playing video locally.We haven't tested the XPS 15 4K's battery life, but it's possible the HP will win this battle.You can lower the screen resolution and get better battery life from the XPS 15, but it won't be the most portable laptop either.The Specter x360 starts at $1,600 for a Core i7-8750H, 16GB of RAM, and a 256GB PCIe solid-state drive (SSD), and tops out at $2,430 with a 2TB SSD.All versions currently come with a 4K screen.The XPS 15 starts at a significantly lower $1,000 for a Core i5-8300H, 8GB of RAM, a 1TB hard drive (HDD), and a 56-watt-hour battery.And you can hit $2,900 for a Core i9-8950H, 32GB of RAM, a 1TB SSD, GTX 1050 Ti, 4K display, and 97-watt-hour battery.The Specter x360 15 is the fastest 2-in-1 we've ever tested, and equal to the XPS 15. But Dell's choice of a much more colorful and accurate display means it's the best choice for creatives who really need all that power.Enhance your lifestyle Product review, technology news, tools to navigate the digital world.