Difference Between NTFS and FAT File System

Characteristics	NTFS	FAT
Stands For	New Technology File System	File Allocation Table.
Partition Size	NTFS support size of files and volumes, up to 2^64 bytes (16 Exabyte’s or 18,446,744,073,709,551,616 bytes).	FAT partitions are limited in size to a maximum of 4 Gigabytes (GB) under Windows NT and 2 GB in MS-DOS.
Naming Conventions	File and directory names can be up to 255 characters long, including any extensions.	It follows 8.3 naming convention. The name of a file or directory can be up to eight characters long, then a period (.) separator, and up to a three character extension.
Suitable Volume size	It is not recommended to use NTFS on a volume that is smaller than approximately 400 MB, because of the amount of space overhead involved in NTFS. This space overhead is in the form of NTFS system files that typically use at least 4 MB of drive space on a 100 MB partition.	FAT file system should not be used in drives or partitions of over 200 MB. This is because as the size of the volume increases, performance with FAT will quickly decrease. It is not possible to set permissions on files that are FAT partitions.