Unfortunately, USB 2.0 flash drives are slower for sequential reads and writes, compared to modern desktop hard drives. It also leverages the inherent advantage of two parallel sources from which to read data. The core idea of ReadyBoost is that a flash drive has a much faster seek time (less than 1 ms), allowing it to satisfy requests faster than readingįiles from a hard disk. Windows 7 supports the new exFAT file system which can be under consideration. So the issue simply become which USB is the fastest. ReadyBoost is smart enough to just let the system read large, sequential blocks of data directly from the hard drive to save time.
Microsoft recommends the amount of flash memory for ReadyBoost acceleration be one to three times the amount of random access memory (RAM) in your computer. Thanks for posting in Microsoft TechNet forums.
