Hello, any help on this issue would be great! My system is based on a ECS P4S5A/DX Motherboard (Socket 478) and a Pentium 4 / 1,8 GHZ processor. I found another better one to replace the processor, the Pentium 4 / 2,8 GHz. Everything works fine, but the new processor runns at 2,1 GHz and not at its full speed ( It says 21 * 100 ). From the BIOS setup i can not change neither the multiplier 21 (which i expected) nor the FSB value of 100. How can i make the processor to work at its normal speed?? Thanks a lot in advance!
First check your mobo CPU support list from their website. You may need to update you BIOS, or you may be stuck. Next try to change the FSB in your BIOS. Look for an "advanced", or "CPU" or "Chipset" option.
Socket 478 board that supports Intel® Pentium® 4 processor up to 533MHz FSB
533/4=133 MHZ max.
The manual at page 14 says:
This mainboard automatically determines the CPU clock frequency and system
bus frequency for the processor. You may be able to change these
settings by making changes to jumpers on the mainboard, or changing the
settings in the system Setup Utility.