Dell XPS 15 2-in-1 9575 review: It might just be the fastest 2-in-1 in town

It's one of only two Kaby Lake G laptops in existence, and this is why we're sad about it.

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Dell XPS 15 2-in-1 Battery Performance

The most important metric for many will be battery life. To test that we loop a 4K-resolution movie file using the Windows Movies & TV app at a relatively bright 250 to 260 nits. We also set the laptop into airplane mode and use analog headsets during our rundown test.

Battery life in a laptop today is mainly dictated by the power consumed by the CPU, GPU, RAM and other devices, as well as the size of the battery, which you can think of as your gas tank. Other factors such as touchscreen, pen support, and even the amount and kind of RAM also play a role.

As you can see in our chart, the  XPS 15 2-in-1 does pretty well. The big winner is the XPS 15 2-in-1’s sibling, the XPS 15, which has a 97-watt-hour battery compared to the 75-watt-hour battery in the XPS 15 2-in-1. Just remember that if you push any of the laptops in the chart with a hard CPU or GPU workload, battery life will plummet. It’s no different than flooring your car going uphill with a load of passengers and luggage and the AC cranked.

dell xps 15 2 in 1 9575 battery life performance IDG

The XPS 15 15 2-in-1 9575 gets pretty decent battery life.

Dell XPS 15 2-in-1 Performance Analysis

While most of our comparison has been against workhorse laptops and gaming laptops, we tend to forget that there are real performance limitations with 2-in-1 designs. So, to see how well the Dell XPS 15 2-in-1 stacks up against its contemporaries we pulled performance results from a slew of 14-inch and 15-inch 2-in-1 designs. We also threw in performance results of the last and current generations of XPS 15.

As you can see, the Core i5 Kaby Lake G does exceptionally well in the Dell XPS 15 2-in-1. First, it’s damn near tied with the only other Kaby Lake G laptop in town: HP’s Spectre x360 15. It easily outperforms the older XPS 15 with a quad-core Kaby Lake H CPU, and Lenovo’s 15-inch Yoga 720 with a quad-core Kaby Lake H Core i7. It outright destroys all of the quad-core Kaby Lake R-based convertibles. To sum up: For a Kaby Lake G laptop it’s hecka fast. For a Core i5 laptop, it’s hella fast.

dell xps 15 2 in 1 handbrake vs other 2 in 1s IDG

The Dell XPS 15 2-in-1 really shines when put up against similar 2-in-1 designs.


As we said earlier, we’re just sad that we’re basically done with Kaby Lake G laptop reviews after having reviewing both of them. But, it is good to end on a high note. On the negative side, we’ll admit that we weren’t fans of the MagLev keyboard, nor the all USB-C port decision. Beside the fact that it feeds trolls who can now claim that Apple was right, we’d still prefer to have straight USB Type A on a laptop rather than have another dongle to lose. The MagLev keyboard? Well, you get used to it, and the snappy sound and feel is tolerable. 

What’s really nice and, frankly, quite possibly worth it is the performance. The XPS 15 2-in-1 is a screamer that gives Core i7 Kaby Lake H laptops a hard time, and it simply smokes just about every 15-inch 2-in-1 design we’ve seen to date.

Which XPS 15 2-in-1 we’d buy

If you’re convinced you want to buy, the only real question left is which configuration.

Dell has four configurations right now, listed here from entry-level to top-of-the-line:

  1. Core i5 / 8GB / 128GB / 1080p, starting price $1,300
  2. Core i5 / 8GB / 256GB / 1080p, starting price $1,500
  3. Core i7 / 8GB / 256GB / 1080p, starting price $1,700
  4. Core i7 / 16GB / 256GB / 4K, starting price $2,000

For most people who are looking for a generally fast system, option 2 is the best choice. The only real negative is the smallish 256GB SSD. If you do indeed to play some games, they’ll eat up space fairly quickly, so paying extra for the optional 512GB SSD is recommended. It would be great to have 16GB RAM as an option as well, but Dell limits that to Core i7 only. 

So if you know you’re going to use it, for say, heavy Photoshop editing, we’d go for the option 3 with the Core i7 and take the 16GB RAM option and 512GB SSD for $1,862.

A larger SSD would be nice, but Dell limits that solely to the 4K version, with up to 2TB for an additional $735. But as you can see from our picture above, you can always do your own upgrade if you want to risk it.

The 4K screen Dell uses is said to be quite beautiful and possibly worth it if you do image editing, but expect battery life to plummet.

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At a Glance
  • Dell's first XPS 15 2-in-1 makes some controversial choices, including its all-USB connectivity and MagLev keyboard, but its powerful Kaby Lake G part offers top-notch performance in a slim profile.


    • Core i5 performance that easily competes with most Core i7 laptops and 2-in-1s
    • Thin, light and powerful


    • No USB-A Port
    • MagLev keyboard has a short travel and can be noisy
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