Typical gate/transistor count for 32 bit FPU (NT)

By: Martin Høyer Kristiansen (mhkristiansen.delete@this.yahoo.dk), July 30, 2002 10:39 am
Room: Moderated Discussions
Paul DeMone (pdemone@igs.net) on 7/26/02 wrote:
---------------------------
>Martin Høyer Kristiansen (mhkristiansen@yahoo.dk) on 7/26/02 wrote:
>---------------------------
>>Out of curiosity.
>>
>>How many transistors does it typically take to implement a 32 bit FPU that can
>>sustain 1 FMAC/cycle at say.. >1GHz in 0.13um ?
>
>Including an approximation unit for division and square root but not a register
>file, probably 1/3 to 1/2 million transistors. In terms of area, perhaps 1.5 to 2.0
>mm2 in 0.13 um.

Thanks.

The context I was pondering was the new line of graphics processors coming out from ATI (r300) and nVidia (nv30). They both deploy floating point pixel data types, and I was wondering just how much logic is consumed by a pixel processor (4 floating point units for RGBA).

The new ATI part has 8 parallel pipes. It must be absolutely huge.

Cheers
Martin
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TopicPosted ByDate
Typical gate/transistor count for 32 bit FPU (NT)Martin Høyer Kristiansen2002/07/26 11:10 AM
  Damn, hit the NT button in the post above. (NT) (NT)Martin Høyer Kristiansen2002/07/26 11:11 AM
  Typical gate/transistor count for 32 bit FPU (NT)Paul DeMone2002/07/26 04:02 PM
    Typical gate/transistor count for 32 bit FPU (NT)Martin Høyer Kristiansen2002/07/30 10:39 AM
      Typical gate/transistor count for 32 bit FPU (NT)Paul DeMone2002/07/30 01:05 PM
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