In addition to the S6 and S7, it has two more on the drawing board.
Apply power to the S7, and the trees become a blur as the engine engages.
Meanwhile, Acer thoroughly revamped the mid-range S3 Ultrabook so that it looks more like the S7.
The keyboard looks different from the S7's, though, and is also a bit clackier, for whatever reason.
However, unlike the shuffle's integrated clip, the S7 dangles from a lanyard in choice of five colors.
Swimmer Josef Craig from Jarrow, South Tyneside, set a new world record in the S7 400m freestyle final.
And again, the S7 is handicapped in that a glass lid and touchscreen should theoretically add more heft.
ENGADGET: Acer Aspire S7 review (13-inch): great Ultrabook, a shame about the battery life
Audi S7: The S Line interior takes on a Matrix movie-like approach embodied by generous proportions of carbon fiber.
The S7 is as nice to touch as it is to look at.
ENGADGET: Acer Aspire S7 review (13-inch): great Ultrabook, a shame about the battery life
The iriver S7 is alive, and it's brown, and small... iPod shuffle small as you can see from that pic above.
Previewed in Europe and Asia, the S7 has already been hailed as one of the most exciting Windows 8 Ultrabooks to debut this holiday season.
Now, 12 months later, the company is unveiling... the Aspire S7.
Design-wise, as we said, it looks like the S7, particularly with the lid shut, and it's now made from one piece of aluminum, instead of several.
Additionally, the S3 steps up to Haswell CPUs, along with a 1080p IPS touchscreen -- the same kind that the S7 had when it first launched.
Dave Roberts, who equalled Dame Tanni Grey-Thompson's haul of 11 Paralympic golds in China, will be competing in the S7 50m freestyle on his 29th birthday.
As thin as a tablet, the Aspire S7 has a simple, clean, futuristic design, with embellishments kept to an absolute minimum to maintain a clean and elegant look.
On the Audi S6 and the Audi S7, the important numbers are 420 hp, 0 to 60 in 4.9 seconds and a combined fuel economy of 20 mpg.
"Acer took a fresh approach to the design and development of the Aspire S7, using premium construction methods and materials, " said Sumit Agnihotry, vice president of product marketing for Acer.
It was a year ago at Computex that Acer unveiled the Aspire S7, a skinny sliver of a thing that turned out to be one of our favorite Ultrabooks of 2012.
You can be provocative in a wildcat electric Fisker Karma or stay silky and classy in in the Porsche 911 or you can go for carbon fiber cool in an Audi S7.
Of the international contingent in Sheffield, German swimmer Kirsten Bruhn was in top form, achieving world records in the SB5 50m and 100m breaststroke and a new European best in the S7 100m backstroke.
You can forget Acer's reputation for putting out cheap plastic stuff: the S7 is as nice to touch as it is to look at, and is easily the prettiest, most tactile laptop the company has ever made.
ENGADGET: Acer Aspire S7 review (13-inch): great Ultrabook, a shame about the battery life
That seems like a feat, given that the 13-inch S7 has a glass cover -- after all, the last time we reviewed a laptop with a glass lid we ended up making excuses for its relatively heavy build.
ENGADGET: Acer Aspire S7 review (13-inch): great Ultrabook, a shame about the battery life
The difference is that it will now be offered with a 2, 560 x 1, 440 screen, which will be standard in certain regions, like Europe. (Elsewhere, a 1080p IPS panel will continue to be the base option.) As you'd expect, Acer's upgraded the S7 to Haswell CPUs (Core i3, i5 and i7), but it also squeezed in a bigger battery -- 47Wh, up from 35Wh.
The 13-inch model is thinner, too (0.47 vs. 0.59 inch), which is noteworthy given that the S5 was once touted as the "world's thinnest" Ultrabook. (The S5 had a motorized drop-down port door in the back, so it sort of had to be thicker than the S7.) Even if you don't have the S5 lying around for comparison's sake, we think you'll be able to appreciate how impressively thin this is.
ENGADGET: Acer Aspire S7 review (13-inch): great Ultrabook, a shame about the battery life
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