Linked by Jordan Spencer Cunningham on Wed 7th Oct 2009 19:15 UTC, submitted by JayDee
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Member since:
2006-11-21
Actually 128 bits is 2^64 times as awesome as 64 bits.
The most powerful supercomputer in the world has a total of 100 Terabytes of memory. 64 bit memory addressing allows for 180 thousand times that amount. And that supercomputer isn't shared memory, so each individual system has much less memory than this.
It is a similar level of expansion from Commodore 64 to current 64-bit power-workstations (64 KB to 12GB).
So if memory expansion happens at the same rate, it will be well over 20 years until we need more than 64 bit memory addressing.