In other words, writing a single bit takes very little energy. So lets see how much energy it would take to write a whole gigabyte:
0.035 nJ * 8 * 1024^3 = 300647710.72 nJ = 0.3 J.
So with just one joule of energy, you could write over 3 gigabytes of data. Of course, if you tried to write all those bits simultaneously, the peak power requirement would be huge.
Anyway, a modern hard drive consumes something like 10 Watts (10 joules per second) during write operations. The difference between that and this new tech is incredible.
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The article says that write operations take only 50 nanoseconds to complete. Some quick math:
0.7 mW/bit * 1 bit * 50 ns = 0,000000000035 joules = 0.035 nanojoules.
In other words, writing a single bit takes very little energy. So lets see how much energy it would take to write a whole gigabyte:
0.035 nJ * 8 * 1024^3 = 300647710.72 nJ = 0.3 J.
So with just one joule of energy, you could write over 3 gigabytes of data. Of course, if you tried to write all those bits simultaneously, the peak power requirement would be huge.
Anyway, a modern hard drive consumes something like 10 Watts (10 joules per second) during write operations. The difference between that and this new tech is incredible.