In my opinion i7 core not worth it, look back to when Conroe came out 975X didn't last long at all before we had P965, P35, X38, X48, P45 chipsets which improved immensley memory & fsb overclocks.
Me personally, I am sticking with the P45 chipset untill after June 09 when we will see the launch of the mainstream chipset i5 which also is on a different socket to i7 i.e. LGA-1156 which will run cooler & also using dual channel DDR3.
Me personally, I am sticking with the P45 chipset untill after June 09 when we will see the launch of the mainstream chipset i5 which also is on a different socket to i7 i.e. LGA-1156 which will run cooler & also using dual channel DDR3.