ASUS Zenbook Prime (UX21A) Review: The First of the 2nd Gen Ultrabooks
by Anand Lal Shimpi on May 22, 2012 2:46 PM EST- Posted in
- Laptops
- CPUs
- Asus
- Ivy Bridge
- Zenbook
- Zenbook Prime
- Ultrabook
- Notebooks
GPU Performance
Peak synthetic GPU performance sees a sizeable boost compared to the previous generation Zenbook. 3DMark 11 requires DX11 hardware and thus the original Zenbook won't run on it, but the rest of the 3DMark tests give us some perspective.
Vantage shows us a 63% improvement over the HD 3000 based Zenbook UX21.
Here we see just how much better Intel's graphics cores have gotten over the years. The Inspiron 11z could barely run the entry level 3DMark Vantage suite, whereas the Zenbook Prime delivers nearly an order of magnitude higher score here.
Gaming Performance
We can say that the silicon in the Zenbook Prime's CPU features Intel's HD 4000, the upgraded 16 EU Ivy Bridge GPU. The result should be much improved gaming performance. Once again we are thermally limited so there are some cases where you won't see tremendous increases in performance.
At a high level, for any modern game, you shouldn't count on being able to run it at the Prime's native 1080p resolution. You need a discrete GPU (or Haswell) to pull that off. The former is a tall order for a machine that's already mostly battery. The good news is that 1366 x 768 is playable in many games.
Not all games will see huge performance gains, but the latest Batman title runs 30% quicker on the new Prime.
More CPU constrained and thermally bound environments won't show any improvement over the Sandy Bridge based Zenbook UX21.
The 61% increase in performance over the original Zenbook takes the Prime into the realm of playability at these settings.
Portal 2 is an interesting case as we are significanty CPU and thermal bound here. The Prime can reach frame rates as high as 39 fps, but after a couple of runs you see degradation into the 32 - 37 fps range. On average, there's no improvement in performance compared to its predecessor - there's no beating the laws of physics.
Diablo III
Last week Intel proudly showed me a demonstration of Diablo III running on Ivy Bridge's processor graphics, from a standard notebook all the way down to an Ultrabook. Eager to repeat the experiment myself, I fired up Diablo III on the Zenbook Prime.
Default settings at 1920 x 1080 were understandably unplayable. Dropping the resolution down to 1366 x 768 and clutter density down to medium however gave me an average of around 17 fps outdoors and 20 fps in early crypts. Given that Diablo isn't a twitch shooter, these frame rates were actually playable - all I needed was an external mouse.
As a primary gaming system, any Ultrabook this size is going to fall short. However, if you need to get your Diablo fix in while on the road, the Zenbook Prime will deliver in a pinch.
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rast20 - Tuesday, May 22, 2012 - link
Different IVB CPU. We can't see it (both configs only feature "ULV IVB") because it's still supposed to be secret, but I'd guess one is i5 and the other is i7.AmdInside - Wednesday, May 23, 2012 - link
The fact that it features an IPS display makes it an easy choice over a Macbook Air and I personally love both Win7 and MacOSX so it is not about OS. I wish I had not just purchased a projector or else this would be on my shopping list right now.ImSpartacus - Wednesday, May 23, 2012 - link
Over a 2011 Macbook Air, sure.I'm reserving judgment until I see the 2012 models. As Anand mentioned, ASUS wouldn't've rushed the Zenbook Prime review units if they didn't have to do it. We won't be waiting long.
cwcwfpfp - Wednesday, May 23, 2012 - link
Thanks for the thorough and insightful preview Anand. By far the most informative of all the previews/hands-ons for the UX21A I've read.I am going to add my voice to those pointing out the 4GB limit. While I think those saying 4GB won't be enough for gaming are a being unrealistic, I do think it is realistic to want more RAM options for other reasons. Right now 4GB should be just fine, but do you guys really see it being sufficient 2 years down the line? I say this as a graduate student often on the move who would like something light to carry around and do work on. So I do foresee having multiple applications running at once and would love more RAM for future-proofing.
I also have my own issues with the keyboard and touchpad layout - basically I think they went too far in borrowing elements of the MacBook Air here and suffer from form over function. Not a fan at all of the clickable touchpad - much prefer dedicated left/right buttons (and even additional buttons above the touchpad would be nice). Also would like to see dedicated page up/down keys - preferably right above the arrow keys. This is more of a personal preference though. I'm sure a fair number of people will disagree with me on that.
That said, overall the UX31A/21A looks like the ultrabook to beat right now. In fact I will likely pick up a UX31A when it comes out, despite my minor complaints above.
SignalPST - Wednesday, May 23, 2012 - link
Can you test the WiDi feature on the Prime? I've heard that version 2.0 supports 2 individual display outputs at 30fps or 1 output at 60fps.Also, since IVB supports max 3 display outputs, can you output both to the microHDMI and miniVGA, and keep the main LCD active as well?
IntelUser2000 - Wednesday, May 23, 2012 - link
I think that's with WiDi 3.0, which will likely come with updated HD Graphics drivers. WiDi 2.0 didn't come with Sandy Bridge launch, only with updated drivers.Also it says on one Ivy Bridge presentation that you can output to two additional monitors using HDMI and Displayport.
SignalPST - Thursday, May 24, 2012 - link
Hmm... you're right. Hopefully we'll get to see some of that action on the Prime.ssj4Gogeta - Wednesday, May 23, 2012 - link
"life is short, I draw the line at spending it testing claims of 150 day standby battery life"You forgot you' have to measure it three times then take the average. :-P
Pantsu - Wednesday, May 23, 2012 - link
Hopefully the 13" models won't be overpriced where I live, since this could be my next laptop. I was afraid the 1080p panel would be only available for $1500+ models.The W7 scaling is probably why most laptop manufacturers didn't want to offer 1080p option. Luckily Windows 8 should fix that issue too.
I'm still debating though whether I want an ultrabook or if I could do with a standard voltage model with discrete graphics, as long as it is lighter than my current white macbook. I don't need an optical drive or ethernet, but neither do I necessarily need the laptop to be ultra thin and light. Looks like I'll wait until back-to-school season until I make my pick though. There should be a good amount of choices available then.
ijozic - Wednesday, May 23, 2012 - link
I don't understand why Asus designs their Zenbooks pretty much like MB Airs? Personally, I find the Apple laptops' looks overly sterile so this makes the Zenbook a no choice for me (unfortunately).My biggest functional gripe with this choice is that they are copying the side profile design of the case - IMHO, if they'd made a case with a uniform thickness, they'd have had room for more ports (e.g. more USBs, SD card reader slot, maybe even a thin express card slot), plus extra battery capacity.
Also, a 1600x900 screen would seem as a more usable choice and thus it would be nice to have it as an option. Well, at least the screens are not glossy as on the Apple..