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xstep

 
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Member Since: Jun 25, 2005
Location: On the road
Posts: 3,231
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Mac Specs: 2011 MBP, i7, 16GB RAM, MBP 2.16Ghz Core Duo, 2GB ram, Dual 867Mhz MDD, 1.75GB ram, ATI 9800 Pro vid

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You should start up all systems from scratch, start Activity Monitor (AM) in the Applications/Utilities folder and then start your rendering.

In AM click on the System Memory tab and watch to see if any Page Outs are occurring. If so, memory is being swapped out to the hard drive so other work can occur. If your own MBP has higher page outs, then you likely need to upgrade your memory to the full 2GB.

I'd also click on the "% CPU" column so that the highest user of cpu resources is displayed at the top. You might see something else going on in your system that you forgot about.

Lastly, I read somewhere that the graphics processor in the new MBP C2D machines runs faster than in the CD laptops. So perhaps the greater speed and more video ram is a contributing factor. I doen't know of a tool to monitor that part of the system.

Lastly is the obvious. Is After Effects 7 a native Intel application or the older Power PC code. For the timing comparison to be of value, the same version should be running on all systems.
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