Dell XPS 15 L521X: A Detailed First Look
by Jarred Walton on July 25, 2012 1:10 AM ESTFirst Impressions: Skin Deep?
When I first laid hands (and eyes) on the new XPS 15, I was extremely impressed. It’s such a noticeable upgrade compared to previous XPS laptops in terms of build quality that I really can’t understate the fact. Dell’s in a bit of a Catch-22 here, of course, with a design that’s very similar to the MacBook Pro 15. On the one hand, if they do a 15” laptop that’s similar but not built as well (e.g. the XPS 15z from last year), they get complaints from people saying, “Apple can do it, so why can’t Dell?” Now they’ve basically silenced those naysayers and instead they’ll get others accusing them of copying Apple’s design. Does that really matter, though? I’d rather have something that looks and feels like a high quality laptop that borrows good design elements from other successful laptops than to get a unique laptop that looks and feels poor. Dell has also taken a few steps to differentiate their design from Apple’s MBP15, and as someone who has often wondered, “Why don’t other OEMs make machined aluminum laptop chassis?” it’s nice to see a laptop that really nails that element of the design.
As good as the XPS 15 looks, it also has plenty of performance potential. The XPS 15z made some compromises to keep thermals in check, and with Ivy Bridge and Kepler moving the CPU and GPU to smaller process nodes Dell is able to increase performance within the same power envelope. 1080p gaming is still going to be a bit too much with some titles, but if you’re really looking for a gaming laptop Dell already covers that market with their Alienware brand. The XPS is basically a stylish and well built brand that straddles the line between business offerings like the Latitude and Vostro laptops and gaming offerings like the Alienware and Inspiron SE models. (Yes, if you didn’t realize, the new Inspiron SE 15 and SE 17 both sport more powerful GPUs than the XPS 15—along with larger, bulkier chassis that don’t have the cachet of the XPS line.)
The problem is that good looks and performance potential can only take you so far, and when you really try to put the pedal to the metal with the XPS 15, the engine overheats and you end up taking an unscheduled pit stop. How big of a problem this is will depend on what you plan on doing with the laptop. I can certainly see gamers getting very frustrated with the current throttling issues, but I suspect the next official BIOS update will largely address those concerns. For general use—Internet surfing, office tasks, listening to music and watching movies, video encoding, etc.—the throttling problems will most likely never even show up. It’s only when you really push both the CPU and GPU that heat becomes a problem. So if you’re not a super demanding laptop user but you want a stylish and sturdy laptop that should last for half a decade—and you don’t want to deal with business class laptops, or OS X and Apple products—I can still readily recommend the XPS 15 as a good notebook that pleases me on many levels.
As good as the XPS 15 might be for mainstream/fashion conscious users, for power users or enthusiasts that really like to push their hardware to its limits I suspect that the XPS 15 will come up short. Even if Dell can create a BIOS that won’t throttle as badly as the current A04 release, I remain skeptical of their ability to have the XPS 15 run a heavy CPU+GPU load without dropping clock speeds on one or both chips. 1.8GHz was stable with my ThrottleStop testing, but that’s in an air conditioned testing environment, and I wasn’t using the most demanding workloads possible. If you run a pathological workload or “power virus” like OCCT or Furmark or similar, and if you require a laptop that can handle such applications without throttling CPU or GPU clocks, you’ll want to look elsewhere—and probably forget about laptops that are less than an inch thick. And on a related note, I should mention that I’ve seen at least some minor throttling with several other “thin but fast” laptops, so Dell’s not alone here; we’ll be making a concerted effort to check for throttling on all future laptop reviews.
For now, the throttling issues are a big enough concern for me that I’m holding off on a final verdict until we can see what the firmware updates bring. I know from past experience that laptops that seem to run a bit hot and/or loud when they’re new will only get worse as they start to age. If running any game on the XPS 15 today means 100% fan speed and juggling CPU/GPU clocks to keep thermals within an acceptable range, a year or two down the road you might be looking at a laptop that can’t really handle gaming at all. Maybe that matters to you and maybe it doesn’t, but if you don’t plan on doing anything that leverages the discrete GPU, why even have it there in the first place? Depending on what Haswell brings to the table, we might actually see dGPUs disappear outside of dedicated gaming laptops like the Alienware line—and I’m not sure that’s even a bad thing.
If we were judging the XPS 15 by appearances alone, it would easily walk out of here with an award. Depending on what Dell can do with the firmware over the next couple of weeks, we might still have a delayed prize to hand out. Unfortunately, out of the gate the XPS 15 stumbles and Dell will have to work to make up the difference. Until that happens, the XPS 15 is a beautifully crafted laptop with some personality quirks that could be hard to live with long term. Make sure you know what you’re getting into before committing to a relationship, or you could end up feeling burned.
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CeriseCogburn - Sunday, July 29, 2012 - link
Looks like the truth is less than half on not so old macshttp://www.ebay.com/itm/Mac-Book-Pro-17-2-3Ghz-i7-...
BillatDell - Wednesday, July 25, 2012 - link
Very fair review, all things considered, Jarred. Thank you very much. I am the Dell employee you linked to out on Notebook Review Forums.I am wondering if skin temps matter to you and the Anandtech audience. I'd be curious to see a skin temp comparison under similar loads between the XPS and any competitive system, particularly the rMBP and MBP. It may not have any impact on anyone's buying decision if they don't see the numbers, but it may or may not matter to others if there turns out to be a wide disparity. Hard to tell if the cost/benefit analysis of our having a hard set skin temp spec across the board for all platforms stands to reason, given pretty much universal approval of how the MBP performs and the obvious lack of popularity with our current thermal/throttling scheme.
Anyone else have any thoughts on skin temps, or is it a non-factor? I'm interested to hear and get some thoughts out here on the record.
Great community. Great site. Thanks for all you do.
yyrkoon - Wednesday, July 25, 2012 - link
If I understand what you mean by "skin-temps" Bill. No for me personally it does not matter. The laptops I use currently serve as desktop replacements. As we are completely off-grid using solar, wind, and sometimes generators.However, I would admit. That we are not the norm for most users.
My own personal concerns are getting what I paid for but, stability first. Just for example. I like to play a lot of games, but have many computer related hobbies. So gaming performance for me tends to be my own benchmark. Of course I also have a price range I tend to stick within.
Unfortunately for me, and Dell. The XPS series is generally out of my own price range. However that could change. With that said, I have been keeping an eye on your companies products. Specifically the XPS mobile line.
JarredWalton - Wednesday, July 25, 2012 - link
Hi Bill, glad to have you on here. Skin (surface) temperatures are something I used to report, but them my thermometer broke and we added a couple more laptop reviewers and I figured I would just forget it and use internal temperatures. What I'd REALLY love to get is one of those digital thermal imaging cameras, but sadly they're a bit too much for me to convince Anand to buy a couple.As for what I think of skin temps, there's a balance that needs to be maintained, and certain areas can get hotter without bothering the user as much. If we're looking at a desktop replacement, it's not too big a concern, but for the more portable systems I definitely feel it's important. Ideally, I want the palm rest, keyboard, and the bottom "thigh" areas to be cooler, while the rear of the laptop (e.g. where the vent is on the XPS 15) can be hotter. 35C or less is generally what I'd like, but I live in WA so temperatures aren't as hot as, say, AZ or CA. If I were living in a hotter climate, I'd probably want even cooler running laptops.
Anyway, as you can probably glean from the review, I'd say you need stability as well as the ability to hit the rated performance on all parts. For the CPU, that means CPU clocks of 2.1GHz or higher regardless of workload should be possible pretty much indefinitely--and certainly if you're in a 75F or cooler environment. If the heatsink/fan can't keep the CPU and GPU at acceptable temperatures under load, then the hardware has been over-specced for the cooling. (We saw this exact same issue on Acer's TimelineX 3830TG, incidentally. Thin and light with reasonably fast hardware, but with gaming workloads the CPU would drop to 1.2GHz.)
My one thought that I keep coming back to on the XPS 15 is that it simply needs a higher RPM fan. Maybe the BIOS can kick the fan speed up one more level, but right now it just doesn't seem capable of cooling effectively at the current maximum RPM. A more drastic change would involve looking at the exhaust and trying to make that "breath" easier, as right now the bottom of the LCD/hinge seems to restrict airflow. Would either of these items be enough to fix the throttling problem? I don't know, but I am very surprised that this wasn't caught and addressed before retail units were shipping to the public.
Here's hoping we'll get a reasonable firmware fix in the near future!
Voldenuit - Wednesday, July 25, 2012 - link
OK, off the bat, I want to apologize for sounding like a broken record.But I was vocally unhappy with the Acer sporting a TN panel at $1400, and I'm even more unhappy with the Dell doing the same thing at $1700. What makes manufacturers think they could (or should) get away with foisting this sort of crap on people?
Next time I should just skip to the LCD page before reading any further. :/
Grok42 - Wednesday, July 25, 2012 - link
I agree. My preference of OS in order is Linux, Windows, BeOS, OS X. I also hate laptops as they are typically slower, hotter and cost more than a desktop. That said, as of today my next computer will probably be a rMBP because of the screen. My profession is computers and ~$1000 is nothing compared to what I will gain with a better tool with which to do my work. The PC industry better wake up and start offering multiple 4k displays or they are going to be wiped out.Doomtomb - Wednesday, July 25, 2012 - link
I like Dell and I want to see them succeed in the consumer/enterprise PC market. However, this review of the new 2012 Dell XPS 15 reminds me of the same niggles I had with my Studio XPS 16 purchased in early 2010. The one area that my Studio XPS 16 will always dominate is display (RGB-LED 1080p) displays colors perfectly unlike the XPS 15. Both of these computers are very premium products with price tags to match. The problems with the Studio XPS 16 were build quality (lousy hinges, seems between aluminum parts), heavy, battery life, and heat. It tries to push the boundaries between size, style, build quality, and performance but you can't have it all. It ended up being too big and heavy and just not quite as powerful as my friend's Alienwares. The battery life was also sub-par for class. I'd just rather recommend getting a thin and light, a gaming desktop replacement, or a MacBook with Retina Display.antef - Wednesday, July 25, 2012 - link
After the ridiculous overheating and throttling (to the point of an unusable machine) I've experienced with my Dell Precision, and reading this article with similar concerns, I can't imagine I'll be trusting a Dell for any high-performance workloads anytime soon.Death666Angel - Wednesday, July 25, 2012 - link
I was going to comment on how the MBP 15" gets mentioned in nearly every paragraph without being in the charts. Then I thought: "Well, they do have the Bench for those things." So I went there trying to compare this with the MBP 15" 2012. But you don't have the Dell there (yet) and you have no Apple 15" of any sort in there. How come? :-)tipoo - Wednesday, July 25, 2012 - link
Indeed, I'd like some macs on there