775 1gig vs 2gig

Discussion in 'iMac' started by meduk1, Oct 24, 2013.

  1. meduk1 macrumors newbie

    May 30, 2008
    Hi all,

    Planning on upgrading my 2007 iMac very soon and debating which 27" model to get.

    Core use will be aperture and some light video editing. I'm not a massive gamer but might try out a few now I've got a machine thats capable, probably mainly RTS games.

    I think I've rulled out the 780m as I'm not a hardcore gamer, any thoughts on the 1gig vs 2gig?

    The only other upgrade I'm planning on is a 1TB fusion and then upgrade the ram separately

  2. MartinAppleGuy macrumors 68020


    Sep 27, 2013
    I have the high end 21" with 1Gb GDDR5 VRAM GT 750M. I have played Dirt 2 maxed out at 72-100fps. Doom 3 gets 250fps. 1Gb is great for me for playing games and HD video editing, but if you are getting a 27", your display may be happier with the 2Gb. Really, it is up to you, but I'd say 1Gb is enough to do everything but play Battlefield 4 maxed out :)


    And those games were all played in OSX Mavericks. I don't use bootcamp. Hope this helped :)


    One thing I have noticed is that the high end 21" that I have with the 2.9Ghz i5 that TB's to 3.6Ghz, actually outperforms the 27" 3.2Ghz i5 that TB's to 3.6Ghz. It appears that they are the same processor, both with the turboboost speeds being the same, just the 27" is clocked higher for its lowest clock. In geek each however, the 2.9>3.6 21" beats the 3.2>3.6 27" by a fair margin. This is apparent in single core tests, but not mufti ore (where the 27" is around 300 higher, not a lot). So I would say if you the performance I am having on my 21", you may want to go for the higher end 27" rather than the entry level 27".
  3. Bear macrumors G3

    Jul 23, 2002
    Sol III - Terra
    There is no 1GB 775M. It's a 1GB 755M vs a 2GB 775M. For your uses, the 3.4GHz i5/775M/1TB Fusion is probably what you want.

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