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iMac core i7 with 2GB vram, only 512 vram showing up

Posted: Fri Oct 14, 2011 5:39 pm
by bvz
I have an iMac running OSX Lion. It has an AMD Radeon HD 6970M with 2048 MB of vram.


Running the trial version of indigo RT v3.0.14, it only reports that I have 512 MB of memory (see attached photo).

Is this normal or correct?

Re: iMac core i7 with 2GB vram, only 512 vram showing up

Posted: Sat Oct 15, 2011 2:21 am
by CTZn
Most probably a video driver limitation, updating drivers should improve or address this issue.

I am ignorant about the modalities on Apple computers; if, just like for windows, you can choose between AMD drivers and Catalyst you might expect better results from the later, reportedly.

Re: iMac core i7 with 2GB vram, only 512 vram showing up

Posted: Sat Oct 15, 2011 7:18 am
by bvz
Thanks for the reply. I'll look into the driver issue, though I think it might not be an option for me under OSX.