Is there a point in having more than 512MB VRAM?

Discussion in 'Buying Tips and Advice' started by macuser154, May 3, 2009.

  1. macuser154 macrumors 6502

    Joined:
    Jan 17, 2009
    Location:
    UK
    #1
    Is there a point in having more than 512MB of Video Memory for gaming? I heard that you only need more than that if you are doing proper 3D animation etc.
     
  2. CubeHacker macrumors 65816

    CubeHacker

    Joined:
    Apr 22, 2003
    #2
    For gaming? Sure. There are tons of benchmarks comparing the 512mb version of the Radeon 4870 and the 1gb version. The difference can be huge depending on the game. Typically, it only makes a difference when you plan on running at very high resolutions (1920x1200 and over) with very high AA and AF settings.
     
  3. darkcurse macrumors 6502a

    darkcurse

    Joined:
    Nov 5, 2005
    Location:
    Sydney
    #3
    Well lets assume you're playing a HD video at 1920x1080. Uncompressed, thats 1920x1080x24/8 = 6.22MB's per frame. Video typically plays at 24frames/sec which means at any given second, you're outputting about 149.28MB's of data which your video card has to process.

    Like the previous poster said, if you factor in that you're playing games with AA/AF at high resolutions you might reach the RAM limit of your GPU. However thats quite unlikely unless you're playing something like Crysis at 1920*1200 at super high settings with 4xAA/AF or something like that.
     
  4. speakerwizard macrumors 68000

    speakerwizard

    Joined:
    Aug 8, 2006
    Location:
    London
    #4
    yes, for when holding a very large model / scene in memory at once whilst working on it
     

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