3 Replies Latest reply on Mar 15, 2008 11:54 AM by Jonas Hummelstrand

    Could Not Create image buffer & placing new RAM

      Hello,

      I 'm all the way from Holand ;) and I hope someone can help with the following:
      I'm running AE 7 and with the original configuration it ran well while rendering. But after putting 4 GB extra (total 6 GB) -I did it in the right way; 2x1 GB RAM in the upper tray and 2x2 GB in the lower tray- I constantly get the error 'Could Not Create 1920x1080 image buffer'. My computer (system profiler) detects the full 6 GB RAM though. Do I have to change any settings in AE 7? AE detects only 3.0 GB...
      I have no idea if it's a software or hardware problem. Maybe it's because I have the brand new Macpro 2.8 Ghz with 8800 GT card?
      Hope to hear from you guys!
        • 1. Re: Could Not Create image buffer & placing new RAM
          Level 1
          You'll need AE CS3 to use multiprocessing, and therefore to use more than 3GB of RAM.
          • 2. Re: Could Not Create image buffer & placing new RAM
            Mylenium Most Valuable Participant
            >I have no idea if it's a software or hardware problem. Maybe it's >because I have the brand new Macpro 2.8 Ghz with 8800 GT card?

            Both. When you change the RAM amount but do not re-initilaize the system, some kernel extensions and caches will not be cleared, resulting in wrong memory mapping for compatibility apps under Rosetta. You should be able to do that using OnyX or TinkerToy or by repairing your system with the install disks. Other than that it's somewhat pointless to run a non-intel-native version of AE on such a powerful system. You are wasting a lot of performance here. Only CS3 will improve matters, but to use the full potential of multiprocessing with HD comps you will need a lot more RAM than the 6GB you have.

            Mylenium
            • 3. Re: Could Not Create image buffer & placing new RAM
              Jonas Hummelstrand Level 2
              To clarify: After Effects 7 and earlier versions are not
              Intel-Mac-native, meaning that they need to run under Apple's PowerPC emulation called "Rosetta." One of many limitations of Rosetta (apart from lower performance) is that it only gives programs access to 1 GB of RAM.

              Like Mylenium pointed out, using anything less than AE CS3 on an Intel-Mac is like putting bicycle wheels on a sports car.

              When you get AE CS3, you'll need at least 2 GB of RAM per CPU-core to get optimal performance.

              - Jonas Hummelstrand
              http://generalspecialist.com/