Thanks Meter 610
Join Date: Nov 2012
Location: Los Angeles, CA
You can look at it this way:
Imagine you have a computer or tablet with two hard drives (or SD cards) installed. One is cheap slow memory resulting in slow read/write speed, the other one allows much faster read/write speeds.
Which one would be better suited to run your system?
With rom2sd you basically install a better and faster SD card to your tablet (in form of a microSD). You install the rom and all your apps to the faster card resulting in better performance. Your old (internal) card is still accessible as storage but has (almost) no role in the actual running of the system.
Does this make sense?
BTW, if you are running CROMi-X on internal and your tablet is sluggish you should investigate why. That's not normal and whenever a user reports lag on CROMi-X it always turned out to be: one dirty flash too many, outdated bootloader, user installed apps - or something similar.
Personally I get better Quadrant scores with rom2sd, but in my day-to-day operation I don't really notice a difference between the two. At least as long as I keep fsync off on internal