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| Product | Lenovo ThinkPad X1 | Lenovo ThinkPad X1 Carbon | Apple MacBook Air (13-inch, Summer 2012)  | Acer Aspire S7-391-9886 |
| Price | $1,999.00 | $1,285.00 to $1,867.91 | $1,124.95 to $1,199.99 | $1,599.99 to $1,619.97 |
| CNET editors' rating | 3.5 stars | 4 stars | 4 stars | 4 stars |
| Average user rating | 3.5 stars | 1.5 stars | 4 stars | 4.5 stars |
| Release date | May 17, 2011 | Info unavailable | June 11, 2012 | Info unavailable |
| Bottom line | The Lenovo ThinkPad X1 is the thinnest ThinkPad ever made, and it's a slim, cleanly designed 13-incher worth a look for business travelers--but it's not as thin as a
MacBook Air, and its battery life isn't as good, either. | The business-oriented Lenovo ThinkPad X1 has a few quirks, but is otherwise a very impressive business-oriented ultrabook with strong crossover potential. | This year's
MacBook Air opts for gradual improvements rather than anything revolutionary, but lowered prices continue to make it the go-to mainstream recommendation for any MacBook owner-to-be. | One of the few standout products from the first wave of
Windows 8 laptops, the Acer Aspire S7 proves that Apple does not have a monopoly on great design. |
| Product Description | - 2nd Gen Core i5 Lenovo ThinkPad X1 1293 - 13.3 in i5-2520M - Microsoft Windows 7 Professional 64-bit Edition - 4 GB RAM - 320 GB HDD | - 14 in - 3rd Gen Core i5 - Microsoft Windows 7 Professional - 4 GB RAM - 128 GB Lenovo ThinkPad X1 Carbon 3444 i5-3427U SSD | Apple MacBook Air MacBook Air (13 in, Summer 2012) - 13.3 in - 3rd Gen Core i5 - Apple Mac OS X Mountain Lion - 4 GB RAM - 128 GB SSD | Acer Aspire - 3rd Gen Core i7 3517UB - Microsoft Windows 8 - 4 GB RAM - 256 GB S7-391-9886 - 13.3 in SSD |
| Packaged Quantity | 1 | 1 | 1 | 1 |
| System Type | Notebook | Ultrabook | Notebook | Ultrabook |
| Dimensions (WxDxH) | 13.3 in x 9.1 in x 0.8 in | 13.03 in x 0.74 in x 8.9 in | 12.8 in x 8.94 in x 0.68 in | 12.7 in x 8.8 in x 0.5 in |
| Operating System | Microsoft Windows 7 Professional 64-bit Edition | Microsoft Windows 7 Professional | Apple Mac OS X Mountain Lion | Microsoft Windows 8 |
| Weight | 3.7 lbs | 3 lbs | 2.96 lbs | 2.9 lbs |
| Processor | Intel 2nd Gen Core i5 i5-2520M / 2.5 GHz ( 3.2 GHz ) / 3 MB Cache | 3rd Gen Core i5 1.8 GHz / 3 MB Cache Intel 3 i5-3427U ( 2.8 GHz ) | Intel 3rd Gen Core i5 1.8 GHz ( 2.8 GHz ) / 3 MB Cache | Intel 3rd Gen Core i7 3517UB 3 1.9 GHz ( 3 GHz ) / 4 MB Cache |
| Memory | 4 GB DDR3 SDRAM | 4 GB DDR3L SDRAM | 4 GB DDR3L SDRAM | 4 GB DDR3 SDRAM |
| Storage | 320 GB HDD / 7200 rpm | 128 GB SSD | 128 GB SSD | 256 GB SSD |
| Display | 13.3 in LED backlight Premium 1366 x 768 / HD | 14 in LED backlight 1600 x 900 / HD+ | 13.3 in LED backlight 1440 x 900 / WXGA+ | 13.3 in LED backlight Yes 1920 x 1080 / Full HD |
| Graphics | Intel HD Graphics 3000 | Intel HD Graphics 4000 | Intel HD Graphics 4000 | Intel HD Graphics 4000 |
| Networking | Bluetooth 3.0 , Gigabit Ethernet , None 802.11n | 802.11n None Bluetooth 4.0 | 802.11n None Bluetooth 4.0 | 802.11n None Bluetooth 4.0 HS |
| Battery | 4-cell - up to 5.2 hour(s) | 4-cell - up to 8.2 hour(s) | up to 7 hour(s) | 4-cell - up to 6 hour(s) |
| Full specifications | Full specifications | Full specifications | Full specifications | Full specifications |
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Lenovo ThinkPad X1 compare
