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CSIRAC's vital statistics

When you look at the chart below, you might think that CSIRAC was a pretty slow machine, but you must compare it to what was available to the scientists of the time.

Scientists of the 1940's would employ one or more computers (generally a woman operating a mechanical adding machine), or manually perform complex computations by hand, to complete their research. Calculations could be performed at about the rate of one operation per second.

CSIRAC, although slow by today's standards, was faster than anything else available at the time at 1000 operations per second.

Comparing CSIRAC to today's computers
  CSIRAC - 1949 Desktop PC - 1996 Laptop PC - 2000
Speed .001MHz > 100MHz > 500MHz
Word size 20 bit 32 bit 64 bit
RAM 768 words >8,388,608 bytes 536,870,912 bytes
Disk capacity 2048 words >1,048,576,000 bytes 19,327,352,832 bytes
Power consumption 30,000 watts 250 watts 10 watts
Weight 7,000 Kg 25 Kg 2.6 Kg

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