No. This model has 8 GB of onboard RAM by default, but it can be upgraded to 16 GB at the time of purchaseâfor an additional US $200. The RAM in this model is soldered to the logic board and cannot be upgraded later.
For other types of power, see Power. In physics, power is the rate of doing work. It is the amount of energy consumed per unit time. Having no direction, it is a scalar quantity. In the SI system, the unit of power is the joule per second (J/s), known as the watt in honour of James Watt, the eighteenth-century developer of the steam engine.
power definition. In physics, the amount of energy put out or produced in a given amount of time. Power is often measured in watts or kilowatts. In mathematics, a power is a number multiplied by itself the number of times signified by an exponent placed to the right and above it. Thus, 32, which means 3 Ã 3, is a power â the second power of three, or three squared, or nine. The expression 106, or ten to the sixth power, means 10 Ã 10 Ã 10 Ã 10 Ã 10 Ã 10, or one million.