Dell XPS 15z: Sincerely Flattering
by Jarred Walton on September 2, 2011 1:30 AM EST1080p Upgrade FTW
We loved the AU Optronics B156HW1 panel in the XPS 15, and we’ve seen several versions of that panel in the Clevo P150/P151 and W150HR chassis. Out of all of those displays, my favorite by far is the B156HW01 v4 matte panel we tested recently in the W150HR. The XPS 15z brings a new AU Optronics into the picture, however: the B156HW03. The good news is that this is still a decent 1080p LCD, with >500:1 contrast ratio. The bad news is that it’s not as good as most of the B156HW01 panels that we’ve tested (outside of the B156HW01 v5, used in the MSI GT680R). Color accuracy after calibration is particularly bad, and try as I might I couldn’t improve the score. That’s unfortunate, but outside of professional imaging/video work the color accuracy is “good enough” that most users won’t be bothered. Here’s how the new panel compares to other laptops.
While the XPS 15 sports a slightly higher contrast ratio, I’d actually take the higher maximum luminance offered by the 15z panel. Ideally, I’d still like to see >400 nits maximum brightness (you know, like the MacBook Pro offers?), but 300 nits is better than average. Color gamut is only 56% AdobeRGB 1998, which isn’t exceptional but is at least a step up from the 40-50% panels found in cheaper laptops. The Delta E score on the other hand is actually the worst post-calibration result I’ve ever measured. Yikes. Some of the colors in the test are still coming in at >10, which is what we typically see without calibration. I tried 1.8 gamma, 2.2 gamma, and several white points, all to no avail. It’s not the end of the world—most people don’t even have a colorimeter in the first place—but it is somewhat perplexing. Overall, I’d give the panel a solid B, where the B156HW01 v1/v4/v5/v6 rate A-/A/C-/A- respectively (and the Dell panel is another A-, though I’m not sure if it’s v6 or something else). Viewing angles are also good, at least for TN panels:
Heat and Noise Levels
One area where we have to offer a word of caution is in regards to temperatures. We’ve seen at least one laptop throttle CPU speeds when the cores hit 85C, and under a sustained load the XPS 15z CPU runs a toasty 90-95C. Of course, the 85C throttling is on the Acer TimelineX 3830TG, and it’s a BIOS setting rather than a CPU limit—Intel specs all of the Sandy Bridge CPUs for up to 100C operation. Even so, 95C is more than we’d like, and the culprit is easy to find. Simple physics dictates that a thinner chassis makes it harder to get airflow, and stuffing a high performance CPU into such a chassis is a recipe for heat. It happens with the MacBook Pro, and it happens on the XPS 15z. The difference is that Apple uses a fan that can spin faster (and generate more noise), while the 15z runs slightly hotter but doesn’t get quite as loud. At idle, noise from 18” measured 31.6dB on my SPL meter (in a 30dB environment), while load noise—from gaming or running a CPU-intensive task like Cinebench—maxes out the fan at 42.2dB.
The 15z chassis could also benefit from better air intake locations; it sits flat and close to the ground, and if you place it on a carpet or a lap and run a game, you’ll find it gets uncomfortably warm. Prop the back of the laptop up so that the bottom intake can get fresh air and maximum CPU temperatures drop around 8C (though the fan noise remains the same).
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JarredWalton - Friday, September 2, 2011 - link
The thinness of the casing is in comparison to the MBP. The MBP feels very solid and doesn't flex, but the covers on the 15z will. However, the covers on the vast majority of covers on notebooks flex -- some more, and some less. The 15z may not be MBP build quality, but it's actually better than a lot of laptops, including the XPS 15. Heck, just the fact that it *has* aluminum covers makes it a big step up from 95% of consumer laptops.Would I prefer the Clevo LCD (B156HW01 v4)? Yes, most definitely. If given the choice between this lesser LCD and its glossy finish but with the 15z chassis, or a Clevo chassis with the better screen and worse keyboard, I'll take the 15z.
Unfortunately, I really can't compare a laptop with everything else out there, especially stuff I haven't had a chance to test in person. There are a LOT of upcoming Ultrabooks that look particularly interesting. Of course, if they ship with crappy LCDs like so many other laptops, I'd be back to the 15z as a good middle ground.
That's pretty much it: the XPS 15z is a good middle-of-the-road laptop in every way. It's not the best built, it's not the fastest, it doesn't have the longest battery life, it's not the coolest running, and it's not the best display. However, it does rank better than average and even good/great in every one of those areas. The whole is often more than the sum of the individual parts, and when I use a laptop, I'm mostly interested in portability. I want something with a decent screen, a keyboard I can type on--and backlighting is a plus--it needs decent battery life (at least five hours for light use), and I don't want it to run loud and/or hot for general use. There are plenty of laptops that provide most of those things, but so many skimp on the display in particular.
Iketh - Friday, September 2, 2011 - link
never will i purchase a 15" laptop with a keyboard like that... even bottom-line acers have great keyboards nowadays... what the hell is that mess???JarredWalton - Friday, September 2, 2011 - link
A MacBook Pro keyboard layout with slightly different key shape? I actually find typing on it quite comfortable to be honest. The missing dedicated Home/End/PgUp/PgDn is unfortunate, but that's my biggest gripe.robco - Friday, September 2, 2011 - link
This thing is a definite rip-off of the MBP, but not the current one. It's more like the original MBP (which in turn looked a lot like the Al PowerBook) that Apple introduced about five years ago. Not quite as thin, but only available with dual-core chips and slower graphics. Guess Dell can copy the exterior, but the actual design and engineering are beyond them. But I suppose that's the point here and why it gets an award - it looks just enough like an Apple product but it's cheaper. It may not perform as well or be as durable, but for most people it's probably close enough.As for the OS, that's a personal preference. I'd be the first to say that OS X is far from a great gaming OS. Then again, if you're looking for a gaming machine, a laptop really isn't a good idea either...
Death666Angel - Friday, September 2, 2011 - link
2nd page, 4th paragraph:"The 15z also comes with either 6GB or 8GB of RAM without fleecing you, something Apple is wont to do."
I'm not a native speaker, but last part is just plain weird. Typo? Copy and paste gone wrong? :D
Otherwise, good review. I'm personally not going to bother with 15" anymore. Had a Samsung R560 (Core2Duo, 4GB RAM, 768p resolution, ~4 hours of surfing) which my wife now uses as a couch laptop for Facebook. But I need a laptop that's mobile, I don't need much computing power on the go. I currently have a 11.6" Acer Travelmate which works just fine, especially for its price.
If that gets replaced in the future, it'll likely be either a low-power AMD (E-350 style) or a mid-power IB/Haswell, depending on price and other accessories. I'd also be willing to upgrade to 13" if the resolution is at least 1600x900 | 1680x1050.
bji - Friday, September 2, 2011 - link
"is wont to do" is a seldom-used and I agree, somewhat awkward English phrase.It has nothing to do with the word "won't" which is a contraction of "will not".
"wont to do" means "has a tendency to do", and further has the connotation that the thing that they have a tendency to do, they do on purpose, and not by accident.
Death666Angel - Friday, September 2, 2011 - link
Thanks for that lesson :D and mea culpa for assuming a typo before taking a look at the online dictionary. But that word probably won't make it into my active vocabulary.Death666Angel - Friday, September 2, 2011 - link
And one last thing: Thanks for including international measurement units in the table on the first page. I have noticed that I complain when they aren't there, but I never say thanks when they are. So here's my thanks!colonelclaw - Friday, September 2, 2011 - link
Why does Apple seem to be the only company remotely interested in actually designing computers? Of course, they do a great job, but the world's a large place and there just has to be other talented designers, so why does everyone else give up and copy everything Apple does. God, it pisses me off, the laziness in the computer industry is just incredibly frustrating.heinsj24 - Friday, September 2, 2011 - link
It seems that every business class laptop has the same design (portable brick), except for Lenovo (portable wedge).A business notebook is a business notebook is a business notebook. Not much room for change/innovation. The only market where a notebook manufacturer can show off it's creativity is in the consumer market.
There are some good designs from everyone. They just tend to fail in execution; either with build materials, attention to build quality, or choice of components - things Apple is known for succeeding at. Even Dell, once had the XPS 1210, which was a design unlike any other of their machines at the time.