Pretty easy. Intel only makes 875 cores. They put them on the 875 style pin grid, or the 865 style pin grid, at their own discretion. The 865 pin grid doesn't have the connections needed for ECC. Also, Intel disables a memory shortcut called "PAT" on the 865.
875: supports PAT natively, and ECC/Non ECC memory
865: doesn't support PAT natively, and Non ECC memory only.
some companies have used BIOS workarounds to re-enable PAT on the 865.
<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>
Did so many P4's fail high speed testing that Intel had to push that number of 2.4C's? And if so, why are so many people clocking them to 3.0GHz on stock voltage?
<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>
You are about to answer a thread that has been inactive for more than 6 months. If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.