GT650M DDR3 vs GDDR5 difference tested!

Discussion in 'Gaming (Software and Graphics Cards)' started by Supranium, May 12, 2012.

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  1. Supranium

    Supranium Notebook Evangelist

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    I found one Chiniese Forum where both versions of the card are testen in benchmarks and games.

    DDR3 vs GDDR5 Á½ÖÖGT 650M²î¶àÉÙ£¿ - Ñ¡¼þÓëÍâÉè - רÃÅÍøÂÛ̳--רҵµÄ±Ê¼Ç±¾µçÄÔ¼¼Êõ½»Á÷ÉçÇø

    The cards run same GPU speed but:

    Card 1 has DDR3 clocked at 900mhz. Memory bandwith of 28,8GBs.
    CPU of the notebook is i5-2.
    Card 2has GDDR5 clocket at 1000mhz. Memory bandwith of 64.0GBs.
    CPU of the notebook is i7-2


    So heres the results:


    3DMVantage GPU score:

    DDR3 29671
    GDDR5 35334
    Difference +19%

    3DM11 GPU score:

    DDR3 2145
    GDDR5 2156
    Difference +0.5%

    Heaven 2.5

    DDR3 750
    GDDR5 777
    Difference +3.6%

    Games:

    Street Fighter 4

    DDR3 136fps
    GDDR5 163fps
    Difference +19.4%

    Resident Evil 5

    DDR3 66.5fps (weaker CPU bound)
    GDDR5 121.4fps
    Difference +83%

    Lost Planet 2

    DDR3 26.6fps
    GDDR5 31.8fps
    Difference +19.5%

    And a google translate:

    Discussion welcome.
     
  2. R3d

    R3d Notebook Virtuoso

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    Good post. I wish they did testing on some more games though. I wonder how high the 650m GDDR3 can OC.
     
  3. Supranium

    Supranium Notebook Evangelist

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    I think it OCs to 1000mhz, but not much further. However GDDR5 can likely hit 1300-1400ish.
     
  4. Kallogan

    Kallogan Notebook Deity

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    I bought a lap with a GT 650M on board for a awful cheap price. Will test it soon.

    The lap has 1024mb on board so i assume it's GDDR5 cause DDR3 seems to come with 2048mb of memory.

    Anyway even if it's ddr3 performances seem awesome compared to previous gen.
     
  5. Cloudfire

    Cloudfire (Really odd person)

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    I think you should be able to overclock this GDDR5 GPU up to 570M performance since GTX 660M is exactly there. And still enjoy the same cool temperatures as 660M. After all, 640M, 650M and 660M is the exact same card. :D

    Thanks for the benchmarks Supranium. Interesting to see how faster memory acts
     
  6. Supranium

    Supranium Notebook Evangelist

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    GDDR5 GT650M is identical with GTX660M.
    Even bios flash should work. :)
     
  7. Cloudfire

    Cloudfire (Really odd person)

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    Nope, the cores run faster with 660M. You still have to overclock the 650M to reach same performance :)
     
  8. Supranium

    Supranium Notebook Evangelist

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    lol.

    Read again and think before you post. ;)

    I was talking about flashing the GT650M with GTX660M bios. Obviously the card would run with GTX660M voltages and speeds if flashed.

    Ofcourse IF GT650M is not MXM version of the card, it probably will not work. However, it shouldnt harm to try, since u can always flash back from Intel IGP enabled.
     
  9. R3d

    R3d Notebook Virtuoso

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    Even if it were MXM, there's no guarantee that it'll run at 650m speeds. Depends on how well the particular chip is binned.
     
  10. Meaker@Sager

    Meaker@Sager Company Representative

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    Also depends if the power circuitry supports the new voltage.
     
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