I doubt that the dell board will allow you to clock your memory higher than 400mhz, so you'd be better off with the DDR400 with tighter timings. Also, according to the FAQ you posted, the maximum memory timings the board is capable of is 2.5-3-3-6, so you may wish to save a little money and buy cheaper ram, as there would be no benefit from having memory rated faster than that.
I am also curious as to why you'd buy 4 x 256mb sticks instead of 2 x 512mb?
Dual channel mode only requires two sticks of memory to be used.
|