Knuckles2001
Level 1 (9 points)
Notebooks

Q: vram 10 mbs in tray loading imac

Hello I know the iMac tray loading g3 has 2mbs of built in vram could I put in a chip of 8mbs of vram and make it have 10 mbs i found a 8mb chip on ebay

iMac, Mac OS X (10.3.x), iMac 333Mhz Blueberry

Posted on Sep 19, 2015 7:45 PM

Close
Knuckles2001

Q: vram 10 mbs in tray loading imac

  • All replies
  • Helpful answers

  • by Jeff,

    Jeff Jeff Sep 19, 2015 10:04 PM in response to Knuckles2001
    Level 6 (11,559 points)
    Sep 19, 2015 10:04 PM in response to Knuckles2001

    The SGRAM card used in your iMac was an ATI-proprietary card, used in the beige G3 series, some ATI graphics cards, and a very limited number of 1998-vintage PCs with an onboard ATI GPU.  As far as I know, the only compatible card for Apple computers was available in a 2 MB and 4 MB version, with the latter being more common and easier to find, but that was some years ago.  A recent search for the SGRAM card turned up only a few listings on ebay and some of the memory dealers that stocked it in the past, no longer carry it.  If it helps, it's the same card that was used in the beige G3 series, which is a 144-pin SO-DIMM, 32-bit wide, fast-paged, 83 MHz/12 ns cycle time or faster.  With the 2 MBs of onboard SGRAM, the 4 MB card will max out the video memory at 6 MBs.  I doubt that the specs for the 8 MB card that you found on ebay would be compatible with your iMac.