128-bit: Perbezaan antara semakan

*128-bit processors could become prevalent when 16 [[exbibyte]]s of addressable memory is no longer enough (128-bit processors would allow memory addressing for 340,282,366,920,938,463,463,374,607,431,768,211,456 bytes (~340.3 undecillion bytes or 281,474,976,710,656 [[yobibyte]]s ). However, physical limits make such large amounts of memory currently impossible, given that amount greatly exceeds the total data stored on Earth.

*[[Quadruple precision]] (128-bit) [[floating point]] number can store [[Word (computing)#Dword and Qword|qword]] (64-bit) [[fixed-point arithmetic|fixed point]] number or [[integer (computer science)|integer]] accurately without losing [[accuracy and precision|precision]]. Notice that since the 8087 (1980), x86 architecture supports 80bits float-points that store and process accurately 64bits integers

* [[Sony]]'s [[Playstation 2]] CPU [[Emotion Engine]] is advertised as a 128 bit processor. It has 128-bit SIMD registers, like many processors, but is only a 64-bit processor in the traditional sense as it can only use 64-bit memory addresses.

* The [[AS/400]] virtual instruction set defines all pointers as 128-bit. This gets translated to the hardware's real instruction set as required, allowing the underlying hardware to change without needing to recompile the software. Past hardware was 32-bit CISC, while current hardware is 64-bit PowerPC. Because pointers are defined to be 128-bit, future hardware may be 128-bit without software incompatibility.