2.5 sides of a multi stranded copper wire (many fine copper wires) can carry several computers.
Cable carrying 4000W, each computer even if it is 500W, that can almost bring 8 computers.
Of course, generally believe that 2.5 square meters of copper wire (GB line), then carrying capacity of 4 kilowatts, that is, 4000W. At present, a mainstream computer graphics card, general power: CPU-100W, motherboard with hard disk memory fan parts -30-50W, 100-200W graphics, almost a mainstream computer chassis and power consumption is about 300-400W, and display normal working time about power consumption in 35-50W, a total of the whole computer power between 350-450W, in no more than 500W. Of course, if all is high-end configuration, then the power consumption can not be calculated.
This can not give you identify a specific number, because the wire power capacity is related to many factors, such as the wire itself of material purity, heat capacity, cable laying, environmental temperature, whether the long distance transmission, and wire number, etc., at the same time you are different computer configuration factors different power.
But there is another factor you should consider, electrical equipment in an instant open, power consumption is 2-3 times the normal work when the power consumption is even higher, if the host computer and display with 8 are open at the same time, estimated that even if 4 square lines are too much. When choosing a line to enlarge a level, the wire diameter has 1.5, 2.5461016253550, 7095, etc., such as you can count 2.5 square can, you choose 4 square, a little more secure
