Hi Texturtle,
I imagine the results of your testing were based on the size of files that were chosen for the testing. I could understand, when using files that are a few K or even hundreds of MBs that the 4GB of RAM will immediately buffer those size files, and do the mechanical (slow, by comparison) work in the background.
But I will be working with many GB size files. So perhaps a larger RAM buffer would be beneficial?
With this in mind, forgive me for repeating my question: is the RAM accessible?
If you still feel it is not worthwhile, please let me know.
By the way, I am aware of the issues with buffered data, if there should be a power loss.