Sony Vaio Z2: Everything is Peripheralby Dustin Sklavos on February 13, 2012 12:55 AM EST
Accessories to a Crime
On paper, the Sony VAIO Z2 is an amazing ultraportable and promises just about everything a mobile professional could possibly want. It's less than three pounds, but get it hooked up to the wall with the docking station and suddenly it's a full featured notebook complete with DVD burner and dedicated graphics performance. Unfortunately, in many ways the Z2 fails to live up to its real potential.
The external design of the Z2 is attractive, as Sony employs a black carbon fiber shell over an aluminum frame for the notebook with glossy plastic used only for the VAIO logo on the lid. You can order it in gold or silver, but the matte black is beautiful enough on its own. There's also a silver accent along the hinge, and the inside and bottom of the notebook retain that sleek black carbon fiber design. This is a uniform, solid-looking notebook, and I have a hard time believing anyone will complain too much about it aesthetically.
So what's wrong with the shell design? It's utterly impractical. We'll start with the hinge, a design decision so atrocious I can't believe it actually made it to production. If you don't have the battery slice installed, the back of the hinge actually lifts the notebook off of whatever surface it's on, producing an incline for the keyboard. This is exactly the intended functionality, but the problem is that the only feet that provide any traction are the front two, causing the notebook to potentially slide during use. More than that, tilting the screen changes the entire incline of the notebook, making it that much harder to find a sweet spot for both typing and visual comfort. Using the battery slice alleviates this problem, but it's insane that you'd have to buy a $150 accessory just to improve ergonomics that should've been correct from the get go.
The Z2's problems don't really stop there, either. While keyboards are often a matter of some contention amongst you, the readership, the Z2's keyboard is a poster child for why so many people revile chiclet-style keyboards. Many of you don't have problems adjusting to notebook keyboards since there's so much variation between vendors, but this keyboard may very well put some of you over the edge. I have tiny, spidery fingers, and I couldn't keep from fat-fingering the keyboard. Depth and travel for the keyboard is horrendous, and key action is incredibly mushy.
The touchpad should fare better: it's dedicated as opposed to being a part of the rest of the shell, and has a fingerprint reader tucked away at the bottom. Unfortunately it's also smaller than you might like, and the touchpad and buttons are one piece of plastic instead of having a pair of dedicated mouse buttons. There isn't even a rocker switch, it's all just one piece. Once again, style over practicality.
Where the Z2 should redeem itself is the dock. While connectivity of the notebook on its own is quite good, the dock is undoubtedly where the action is. For what it's worth, Sony's Power Media Dock is a fantastic idea: it plugs into the AC adapter port and USB 3.0/dock port (it's not strictly USB 3.0, so don't try to use it with another notebook—it actually uses Intel's Light Peak technology for connectivity), and there's a pass-through for plugging in the AC adapter. Once it's hooked up, the Z2 detects it and asks you if you want the Radeon to power the interior screen or external monitors. This should be the feature that makes the Z2 alongside the stunning 1080p screen. Except there are major drawbacks.
The AMD Radeon HD 6650M inside the dock is limited to a PCI Express 2.1 x4 link instead of x8 or x16, and the performance hit is a noticeable one. Worse still, the only drivers you're going to find for the Radeon are on Sony's site: they don't use the publicly available drivers on AMD's site. You could argue that there's some secret sauce going on here, but the VAIO is using AMD's XGP standard, and either way you have yet another front where the 6650M is being hamstrung. I had to reboot the Z2 the first time I plugged the dock in just to get it to properly accelerate the internal monitor, and after that I still ran into the occasional problem during game testing; DiRT 3, for example, would only run windowed, and would only run on the Intel IGP.
Is the dock still better than nothing at all? Abso-freakin'-lutely. The 6650M is still a major upgrade on the Sandy Bridge IGP, and the added functionality (including the slimline optical drive) is appreciated. Unfortunately you're at Sony's mercy for driver updates, and we all know how reliable notebook manufacturers are at keeping video drivers current. We could also say that as long as you're going external, something a bit more potent than the 6650M would have been welcome; a 6770M would have boosted the clocks another 20%, and making the dock slightly bulkier shouldn't be too much of a problem.
Finally, there's the battery slice. Unlike the slice included with the VAIO S series we reviewed recently, this one actually requires you to screw the battery in to the bottom of the notebook. You rotate the outside edges with your thumbs and tighten the hold at the top. This seems like a sound idea, except the slice doesn't actually feel any more secure than the old latch-style locking system did. It's just a bit of added hassle. Thankfully the slice improves the ergonomics of the Z2 substantially without adding too much to the weight; the Z2 was already under three pounds, and the slice puts it a touch under four. It's an acceptable compromise for what the slice brings to the table.
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Malih - Monday, February 13, 2012 - linkI'm curious how low would the temperature be, and how much longer the battery life is if it uses an i5 (or maybe i3?).
Primarily cause I don't expect too much CPU power with an ultrabook, and the cooler it runs, the less noisier it is, the better, just as long as I can browse the internet, watch HD movie, run a development web server and code comfortably, preferably on 8-hour or so battery life.
Perhaps if AnandTech could test/request some of the i3 or i5 Ultrabooks from manufacturers instead of maximum performance hardware in the future.
mczak - Monday, February 13, 2012 - linkcore i5 instead of core i7 doesn't really buy you anything - in fact it should be slightly slower for the same power usage.
I think though if the fan really has trouble cooling that 35W chip Sony should have opted for a i7 25W instead. If you compare the i7 2620M (35W) with the i7 2649M (25W, same price) you'll notice you don't really give up that much (in contrast to the 17W options which definitely sacrifice peak performance quite a bit).
The i7 2649M has 2.3Ghz clock with 3.2Ghz turbo, while the i7 2620M has 2.7Ghz clock with 3.4Ghz turbo. That's just 15% deficit for base clock and 6% for turbo. The IGP is also clocked lower but since you've got a dock with discrete graphics it probably isn't that important.
(In contrast the fastest 17W i7, the i7-2677M, has just 1.8Ghz base clock, with 2.9Ghz turbo, a bigger loss percentage wise against the 25W i7.)
JarredWalton - Monday, February 13, 2012 - linkWhile the i3, i5, and i7 are all rated at 35W TDP, that's not what they'll actually draw on a consistent basis. My experience in the past has been that, depending on the voltage of a specific CPU (which varies slightly even for the same clock speed), you will find i7 frequently uses a bit more power (offers slightly lower battery life) than i5. It's usually not enough of a difference to worry about, though -- like less than 5%. My feeling is that 35W is just pushing the limits of the cooling solution a bit too hard; either they need a slightly thicker laptop (thicker = more airflow), or they need a lower TDP CPU.
mczak - Tuesday, February 14, 2012 - linkI'd love to see a test comparing different i7 chips (with several identical ones to account for variation) to different i5 chips (again with several identical ones).
There used to be a time where faster chips had a published TDP which was larger than slower ones (they often also had higher voltage). Then at some point someone must have realized this doesn't look good, and all chips had the same TDP (or rather same TDP class) even though it was plainly obvious the power draw of the faster chips was still higher (they continued to have higher frequency, the same or higher voltage, and leakage wasn't much of a factor).
Nowadays, with multiple VIDs and leakage being an important factor, this isn't that obvious. but it would not be surprising if it's still somewhat true.
I agree though it would not be enough of a difference in any case to make a significant difference for cooling (hence the 25W suggestion, though this implies core i7 as there are no current mobile i3/i5 25W chips).
Malih - Monday, February 13, 2012 - linkThanks, I wasn't aware they have the same TDP. I wouldn't mind the 17W i7 if the temp is lower, guess I'll be looking for laptop with this CPU.
I assumed since it is a quad core the i7 probably would produce more heat, compared to dual core i5 (or i3).
Malih - Monday, February 13, 2012 - linkOh, I just noticed on the specs sheet that the i7 2620M is a dual core.
vavutsikarios - Monday, February 13, 2012 - linkcould you please provide the dimensions and weight in metric system please?
axelthor - Monday, February 13, 2012 - linkYes please!
mtoma - Monday, February 13, 2012 - linkAmen to the metric system! AnandTech aims to be an international site, yes? Progress, progress, progress, much like we demand to the notebook manufacturers.
ratte - Monday, February 13, 2012 - linkAgree, really annoying to have to translate everytime