"NTFS Performance
Disk subsystem performance is a critically important factor in overall system performance, and NTFS is generally believed to be slower than FAT. However, with a correctly created NTFS volume, NTFS performance optimizations, and improved disk defragmentation, NTFS performance (including the extra "journaling") is equivalent to FAT on small disks and is faster than FAT on large disks.
Furthermore, NTFS performs well when reading, writing, and mounting large volume sizes. FAT32 performance is reduced for volumes larger than 32 GB in two areas:
•Boot time with FAT32 is increased because of the time required to read all of the FAT structure. This must be done to calculate the amount of free space when the volume is mounted.
•Read/write performance with FAT32 is affected because the file system must determine the free space on the disk through the small views of the massive FAT structure. This leads to inefficiencies in file allocation."
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