DDR is compatable with 915P, so is DDR2. Support depends on the motherboard maker, some boards have DDR slots, others DDR2, and a few have both types of slots.
<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>