It will definitely be slow! The whole platform of external frequency is reduced from 800 to 533, and the four image points of the sample become two-way communication. You can connect a serial port 865(SATA) hard disk, which is different from a hard disk with only 845 parallel port (IDE). Another difference is invisible.

If you imagine the original works that can be completed at the fastest speed, it is overclocking and BIOS brush. Both methods have certain risks (use with caution).