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AE on new Mac Pro Quad-Core painfully slow

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AE on new Mac Pro Quad-Core painfully slow
by Eric Ransdell (Fly Films Shanghai) on Jul 19, 2008 at 12:08:04 pm

I've just bought a new Mac Pro Quad-Core 3.2 GHz with 16 GB of RAM (all matched pairs from OWC with original Apple RAM removed) and an NVIDIA GeoForce 8800 GT and AE is running slower than on it did on my old G5. I realize the graphics card doesn't make much difference, but AE is running incredibly slowly given that I now have 4x the RAM and processing power of my old system. I've read through numerous posts on this forum and have taken a number of steps advised, including:

* Turning on multiprocessing (which tells me I have 7 additional processors that can be used to render frames simultaneously)

* Opening Users>Library>After Effects Prefs.txt and changing the Max Number of Processes value to 8 in the MP section

* Changing RAM cache to 68% (= 2 GB) in AE Preferences>Memory & Cache

* Turning off Open GL

And yet nothing seems to be making AE any faster. Am I completely missing something here?

My Settings:

Max Memory Usage = 120% (3.0 GB)
Disk Cache Enabled (Maximum size = 8000 MB)
AE 8.0.2.27
MacPro is seeing all 16 GBs of RAM according to "About this Computer"



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