PC hardware--CPU & Motherboard & RAM/128 bit microprocessor design.


Dear Bob

Can 128 bit Microprocessor be designed in theory and practically?.


It depends on what you mean by "128-bit processor" - there are (and have been for many years) processors that can operate on 128-bit floating point (IBM S/370) or vector data (e.g. SSE), but there is not a 128-bit integer processor available. Wikipedia provides more, as well as examples:
https://en.wikipedia.org/wiki/128-bit (including the DEC VAX which can work with 128-bit integer values). There are also (not mentioned on that Wikipedia page) VLIW and SIMD designs that can do "bundled" operations on 16- or 32-bit data totaling up to 128-bit, examples include Sony's Emotion Engine or Transmeta's processors. These designs aren't inherently dissimilar from the VAX or other examples described on the Wikipedia page, in that they're not a full 128-bit pipeline, but instead a collection of 32-bit registers that can operate in parallel to complete more complex tasks (and are often limited to higher precision for floating point or vector math, not integer operations). Some GPUs work this way internally as well (e.g. GeForce FX).


PC hardware--CPU & Motherboard & RAM

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