This is a 30K foot view (lots of details left out)

First by way of what a VSTi and VST are:

VSTis - are basically soft synths (Kontact 5, Additive Drums , Jamstix, Dim Pro, Sampletank 2.5 or 3, etc.)

VSTs - are effects (EQ's, compressors, reverbs, etc.)


NOW a 64 bit VSTi can load and play back individual or combined sample (aka instruments) - pianos, drums, flutes, string sections, brass sections… that individually or combined (like a full orchestra or a band) are LARGER than 4 GB. Actually RAM size up to the operating systmes (OS) RAM LIMIT: The theoretical limit is some exabytes, but the current address tables are set up to 128 GBs, depending on the version of OS you have, in any case, it allows for more RAM than the majority of mother boards allow installed anyway). That's it's BIGGEST benefit that you will see argued here anyway; it can use more RAM.

And finally both a VSTi and a VST, can again use more as mentioned RAM, but in the 64 bit environment it runs more "efficiently" that is, it has less of a load on the CPU (usually) then it's 32 bit counterpart - that alone allows more "stuff" to be going on.

Hope this helps
Larry

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