The world's tallest and lightest 10-inch laptops

Dell E4200, Lenovo X360 . only weighing less than 1 kg but not so lacking in the important features of a laptop.

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HP's EliteBook 2530p weighs 1.45 kg, a 12.1-inch LCD screen with 1.2 GHz or 1.83 GHz Core 2 Duo ULV processor, 4 GB RAM, 160 GB hard drive or 80 GB SSD. Photo: Engadget .

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Apple Macbook Air weighs 1.36 kg, 13.3 inch LED screen, resolution of 1,280 x 800 pixels. The system uses Intel Core 2 Duo 1.6 - 1.8 GHz, 4 MB L2 cache, 800 MHz FSB, 2 GB RAM and 80 GB hard drive. Photo: Apple .

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Lenovo ThinkPad X300 also has a 13.3-inch LED screen and a weight of 1.32 kg, equipped with Intel Core 2 Duo SL7100 LV 1.2 GHz, 1 GB RAM and 64 GB SSD drive. Photo: Mila .

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Samsung last week challenged Apple with a 13.3-inch X360 weighing only 1.27 kg with the ad "Lighter than Air" (referring to a lighter device than the MacBook Air). The product uses Intel Centrino 2, 1 GB RAM - 4 GB, 120 GB hard drive or 128 GB Flash SSD. Photo: Gizmodo .

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Toshiba R500-S5007V is equipped with 12.1 inch LCD screen, weighing 1 kg with 1.7 GHz Core 2 Duo, 2 GB RAM, 120 GB hard drive or 128 GB SSD SSD. Photo: Toshiba .

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Dell last month demonstrated the E4200 12 inch only 0.99 kg. Another impressive feature of this system is that the battery life can be extended for 19 hours. The device uses 1.4 GHz Intel Core 2 Duo, 5 GB RAM and allows to select SSDs with different capacities. Photo: EnGadget .