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does tex fill rate mean anything anymore

Discussion in 'Graphics Cards' started by KainXS, Oct 12, 2010.

  1. KainXS

    KainXS

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    going back does tex fill rate mean anything anymore when buying a card since newer cards have less tmu's but more powerful shaders than older cards.
     
  2. cheezburger

    cheezburger New Member

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    it is still mean a lot and most issue was because they want to tie up more ALU with SIMD cluster which it end up the more TMU the more shader but die space has limitation and higher TMU will cause lower yield because of even more shader. even so it's still reasonable because we had TMU number boost since g70 and even today TMU count still twice as large compare top raster pipe while back to the time rops are same equal number to TMU.
     
    digibucc says thanks.
  3. cadaveca

    cadaveca My name is Dave

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    Yes, it's still important. Textures are used in games, and a card's ability to process them is one of the most important things of a gpu.

    *start nonsensical compare:

    A Shader..does what, do you think? maybe create shades of colour, or light/darkness? Textures must be applied with speed too...


    *end nonsensical compare.
     
  4. KainXS

    KainXS

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    seems I wasn't very clear, what I am asking is that if you compare older gpu's and newer ones, does the texture fill rate give a good basis for comparing them, like GTX480 vs GTX285
     
  5. hellrazor

    hellrazor

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    Well, a higher one will let the game have higher-res textures.

    Of course that means it depends on the game mostly.
     
  6. yogurt_21

    yogurt_21

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    put simply, no



    http://www.nvidia.com/object/product_geforce_gtx_285_us.html
    51.8 Billion
    http://www.nvidia.com/object/product_geforce_gtx_480_us.html
    42 billion

    yet we know the 480 is faster.

    texture fillrate is heavily dependant on tmu's, memory bit rate and memory clockspeed.

    note that the memory clocks are measured differently there the gtx285 should show 2484MHZ to be comperable
    gtx 480 60 tmu's, 384-bit (albeit gddr5), clocked at 1848MHZ
    GTX285 80 tmu's, 512-bit (albeit gddr3), clocked at 2482MHZ

    so with a higher memory bit, more tmu's, and higher memory clocks speed the 285 is able to have a higher texture fillrate while haveing a lower memory bandwidth and lower performance overall.
     
    Last edited: Oct 13, 2010
    digibucc says thanks.
  7. cheezburger

    cheezburger New Member

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    indeed, fermi is a junk because the texture fill rate is much less than gtx 285. while under dx9/10 it's much much slower because of it. and narrow bus are impact to fermi despite it has GDDR5 memory and higher core clock.

    result: 512bit bus will make its come back soon.
     

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