I dont see diferrence between this two part..
A5008568 229.99 16GB 1333MHz Dual Ranked Low Volt RDIMM
A5184178 229.99 16GB 1333MHz Dual Ranked Low Volt RDIMM
Thanks for all your help. I would propose to upgrade all R710 with (A5008568) -- 16GB 2Rx4 RDIMM ECC 1333MHz LV..........I certainly hope this will work well with my server having E5520 processors and would also work with existing (G484D) -MEMORY MODULE..4G, 1066, 2RX4X72