I just bought the prescott chip 478 socket at 2.8 Ghz. I am currently using a Celron Prossesor with (2) 512MB PC3200 DDR RAM 333Mhz/400Mhz. Will this increase the speed of my computer and if so, what type of diffrence should I see? Also can I use the stock OEM Celeron fan on the Prescott chip?