If you want an exact clone, you can try "dd", or any of the other programs that will clone a partition. They should take advantage of the SATA speeds. Also, if you haven't already heard about it, CFG Loader now supports FAT32 partitions and the tool for that might be worth checking out. I'm sure the other loaders will follow suit in supporting FAT32, considering it's a no-brainer, IMHO.
EDIT: Forgot to add, you might want to refrain from mentioning how many games you have, as there are many sanctimonious morons around here who will completely ignore your inquiry for factual information and instead fixate on that number, while hopping up on their high horses to judge & label you, with an occassional vulgar flame thrown in for good measure, thus dragging the entire thread off-topic apparently in an effort to provide job security for the mods.