according to p45 block diagram, it seems that p45 supports both ddr2 and ddr3 ram. but, in ecs's P45T-A website, there's not even a word about supporting ddr3 ram.
The diagram of P45 says the P45 chipset support DDR2 and DDR3 RAM,it doesn't mean it supports both DDR2 and DDR3 at the same time,it means we have DDR2 P45 boards and also DDR3 P45 boards: http://www.intel.com/products/desk [...] erview.htm