Force VM Buffering to Use More than 3.5GB RAM - Good Idea?

Sorry if this was explained, but I didn't see the short answer in any of the other threads I just stumbled on (and it sounds interesting).
First: Download and Info:
http://kb.adobe.com/selfservice/viewContent.do?externalId=kb402029&sliceId=1
The information about VM Buffering in Photoshop CS3 is confusing at first glance.
First it says it gives PS access to about 8GB RAM and speeds things up, then it says it slows things down.
What might be the short recommendation on 2008 Mac Pro 2.8 8-core, 4 internal SATA (no RAID), 10.5.2 Leopard, 14GB RAM?
Files range from 20MB-1GB.
Should I be using these plugins?
ForceVMBuffering.plugin
DisableVMBuffering.plugin

>Just to be sure now, if I install ForceVMBuffering plugin, Photoshop CS3 will use more than the 3.5 GB?
As long as we're clear on what "use" means. The primary function of the VM buffers is to put as much scratch data as possible into RAM, instead of using the normal and much slower scratch hard disks you set in Preferences. That means if you are using a file so small that Photoshop wouldn't need to swap out to the scratch files, you may not see it take much high RAM. Also, my understanding is that because buffering is only about scratch files, it does not help provide more RAM to calculate a single operation, such as a running a complex filter on a very large layer. But if you never see "out of RAM" errors (and most people don't, because Photoshop is already well optimized), you don't need to worry about having enough RAM for operations. You only need to be concerned about using any extra available RAM for performance-enhancing memory buffers, and that's what Photoshop takes care of with VM buffering.

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Force VM Buffering to Use More than 3.5GB RAM - Good Idea?

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