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Hardware configuration at present have been upgraded to Haswell low voltage processor, a total of core i5 and I3 two versions, and equipped with a Radeon HD 8670M graphics card, this machine adopts hybrid drive, and increased APS hard disk protection function for the mechanical hard disk.

Considering that B4440s mainly for young students, at present many university dormitories are not equipped with air conditioning equipment. So we are in a no open air conditioning room, dormitory for 30 minutes to simulate running.

The keyboard surface temperature on cooling air outlet near the central region, the keyboard than other location slightly high, high work load, if often struck the central area of the button, there will be heat transfer, the typing comfort has certain influence. In the back of the fuselage, the heat also focused on the outlet, most of the heat accumulation in the cooling vents near the location, the surface temperature of 47.2 degrees celsius.