Author: Matt Taylor
Date: 06:08:25 03/01/03
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On March 01, 2003 at 03:11:43, Jeremiah Penery wrote: >On March 01, 2003 at 02:44:08, Matt Taylor wrote: > >>The increase of computing power per processor is tied directly to the increase >>of transistors/mm^2. > >It's not an exclusive relationship. Do you wish to argue that processor power is NOT primarily influenced by transistors/mm^2? I also have pointed out that other factors are influential. Now, which drives more performance? Processors have extracted performance from pipelining, superscalar execution, etc. How often do designs change to yield more performance? ... The Pentium Pro launched somewhere around 180 MHz (upper end) and was scaled all the way up to 1.4 GHz. That is nearly a 10x increase in speed. The only architectural change through this time that I can think of is SIMD. MMX and SSE are great buzzwords, I suppose, but they do very little in the way of creating real performance for general applications, and they are littered with problems (such as lack of support, lack of compiler support, competing extensions, etc.). Enter Pentium 4. In 0.13 micron form, the Pentium 4 scales to 3.06 GHz. This is roughly equivalent to a 2 GHz Pentium 3. Is there a speed increase over the 1.4 GHz Pentium 3? Yes. Is it 10x? No. -Matt
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