Dell XPS 15 L521X: A Detailed First Look
by Jarred Walton on July 25, 2012 1:10 AM ESTDell XPS 15 Battery Life
Dell uses a 9-cell, 65Wh integrated battery in the XPS 15 that’s not user replaceable, which is similar to what we’ve seen in the previous generation XPS 15z as well as the MacBook Pro 15. Apple uses a higher capacity battery, and under OS X the MBP15 will generally offer superior battery life, but unless something has changed since our last look we would expect greatly decreased battery life under Windows via Boot Camp. Since the XPS 15 is designed to run Windows from the ground up, there isn’t a problem with lack of power optimizations, and the result is competitive battery life. The LCD was set to 50% brightness (109 nits) for our battery testing—or nine steps down from maximum if you’re using the keyboard shortcut.
Idle battery life is just over seven hours, with a normalized result putting the XPS 15 ahead of everything except Ultrabooks and AMD’s Trinity. Put a more typical load on the laptops, like our Internet test, and we’re at five hours of useful battery life. If you’re doing lighter web surfing with a mix of office applications, you can expect somewhere around six hours of battery life. As for video playback, Dell manages just over four hours of 720p H.264 decoding; 1080p H.264 decoding drops that slightly to around 3.5 hours. That’s actually one of the lower results for battery life considering the battery capacity, though it’s worth noting that playback on higher resolution displays ends up being more taxing as there are more pixels to push. Overall, then, battery life is good and will be sufficient for most people to get through a day’s work without plugging in, particularly if they let the LCD turn off and/or the laptop go to sleep during periods of inactivity.
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ananduser - Wednesday, July 25, 2012 - link
Well your stress tests are against Anand's own review and many other reviews that have noticed how under long stress tests the MBP gets extremely hot. You're a lucky one.dtolios - Thursday, July 26, 2012 - link
Apple did nothing "new" with the rMBP...the contrary, it got thinner and the thermal envelope of the notebook got "tighter"...It's just that it is using "cooler" components that intel and nvidia put together.
The metal chassis can only insulate so much, and that is true for all manufacturers. Apple cannot beat physics (doh).
Thus really high end GPUs were always out of the question for MBPs, (and all thin/light laptops) despite the amount of money you were willing to throw in for customizing.
CeriseCogburn - Sunday, July 29, 2012 - link
Ha that is so funny to me - I can see that picky elite machead going for the totally silent room, doing the yoga meditation, some breathing exercises, then firing up the MBP to do some spiritual testing - getting that ear on down low next to it, to see if it can hold it's breath, too.That's why the macgineers had to do what they did do - it's the end user's magical idiot silent wet dream, and there are so many of those people... who cares if they burn their crotch off - that's a good thing.
Yeah, it's really sad. Same type of insanity with gaming gpus as they have the sound cranked to the max and often are wearing noise cancelling expensive headgear for sound. I suppose the fan sound would ruin their delicate and selective critical listening enjoyment.
name99 - Saturday, July 28, 2012 - link
The two are really not comparable. Read what Anand said:http://www.anandtech.com/show/6023/the-nextgen-mac...
The takeaways are:
- for many purposes attempting to stress the machine did NOT result in reduced performance
- even when it did, the falloff was not that extreme (5% or so)
- there was no mention of the system ever crashing due to thermal overload (and I've never heard of this in earlier Macbooks, eg my 2nd gen MBA very obviously throttles in hot weather, but it never crashes).
One thing I wonder (Anand hinted at the same thing) is whether this is a consequence of using a 45W part rather than 35W --- Apple has more headroom and is using that AS headroom, not as compute capacity. If so, this would be analogous to the way they under-clock pretty much every iOS device relative to the CPU's rated specs. The exact reasoning is slightly different, but the overall point is the same in both cases --- to balance the tangible, measurable goal of maximum performance against the intangible, unmeasurable goal of delight, where delight is increased by things like longer battery life, consistent performance and, of course, no crashes. The editorial aside would, of course, be that you can't build products that delight if you are purely driven by checklists and measured numbers --- you have to be willing to make tradeoffs, like leaving some performance on the table for the sake of battery life, or stability, or temperature.
[I'm not trying to be rah rah Apple here; I'm trying to point out the real differences between these two products, and the real factors that led to these differences.]
GotThumbs - Wednesday, July 25, 2012 - link
Ok Fanboi. Just remember the fact that Apple is now a PC Assembler. When they first came out...they built their own systems. They were not as successful back then. Now they use Intel chips and other PC components available to any other PC Assembler.Now Apple is a PC Assembler and they are very good at designing fashionable/attractive shells, but don't con your self into thinking Apple is a true innovator. The are very much like the Chinese in the 80's (Sony Tv's, Walkman, etc.). Apple is very good at taking an existing idea...and putting its own spin on it. There are features they have that are not mainstream...like fire-wire...but as the reviewer stated....He doesn't use it and most of the users of today are probably in the same boat. How great is an option or feature...in its not used/needed?
You need to put the Cool-Aid down.
Listen, If you like using Apples products and they do what you need....I'm happy for you. Just don't try and make this a pissing game or who's dad can beat up whose.
I'm really getting tired of the regurgitation of which is king.
Now that Apple is a PC assembler...the reviewers point about the OS is the key. Either you prefer windows or Apples OS.....or any other number of Linux alternatives.
All I'd like is for people to grow up and have a little respect for other peoples choices/decisions.
If it your money...spend it how you wish...but don't act like a 5 year old and sing about your ice-cream or whos king of the hill. It just too school yardish.
All the best and enjoy your computer.
solipsism - Wednesday, July 25, 2012 - link
1) So in 1976 when they first started out they were less successful than they are now as the world' largest publicly traded company? No fucking way! /s2) The parts they use today are more specialized then any other time in Apple's history. Using an Intel processor doesn't change anything as the processors they used previously were also available to others. Just look at the Xbox 360 for proof.
3) Also note that Apple builds their ARM SoCs based on reference designs. Same goes for a lot of other components that Apple doesn't directly own but has invested heavily in and therefore has been given exclusive rights for a set period of time. Their display tech for the iPhone, iPad and now MBP come to mind.
kevith - Wednesday, July 25, 2012 - link
I´l just second your opinion of the pissing contest.And this isn´t even a Mac-review...
CeriseCogburn - Sunday, July 29, 2012 - link
Oh come on, we've got to compare. I'm learning here. Let them express.xype - Wednesday, July 25, 2012 - link
…and Apple was the first to figure it out, it seems.At least Dell made the keyboard area black and put the sleep light in the center, that counts for something, amirite?
It’s kind of weird that Apple’s "think different" is becoming a "everyone be like Apple!". I love my MacBook Pro and iPad, but damn, it would feel nice to see an original design on the (big vendor) PC side now and then.
Why do these companies think people will buy a copy of an Apple design/hardware, if they can get the original just as well? Customers like choice, yes, but choice does not mean 5 vendors making the same laptop all over again.
No wonder the PC makers are struggling, they’re all lead by unimaginative MBA retards.
ananduser - Wednesday, July 25, 2012 - link
Yes PC makers are indeed struggling, Apple being one of them. Apple's PC lineup is also not the pinnacle of mobile computing. Get a grip.