If you are going for that amount of memory, i assume that you are going to make a professional use,so i would advice you to sell your kit and to buy ecc memory...having memory at 1600 or 2000 makes absolutely no difference in almost any real scenario use that you can think of... But having ECC makes a big difference when taking into account stability in a professional context.
If you choosed Ecc memory, go dual rank buffered since, when using quad rank, it slows down the speed of the memory.
No problem for quadcrossfire.If you are going to overclock, two psu are better since the gpus alone, slightly overclocked, can pull 1200 watt from the plug...
If you are going to oc, the cpus account for at least other 400 watts at 4ghz @1.4 volts for both cpus at full load. Add then the power for drives, fans and liquid cooling in case you are under water and you see that you rapidly pass the 60% load that it would be ideal to keep your psu at .
Choose Antec PSU or seasonic ones,they are the ones with least ripple and noise of all.
Do you have already ssd? cause these days 512gb M4 can be found dirt cheap.I just bought one for 280£.consider also that the sata 6 gbps controller on the sr-2 is ridicuolously slow and that already one drive saturates its maximum bandwidth,raid is pointless on this controller.
so the best would be to have a single bigger drive.this option would also not cripple the ability for the os to pass trim commands to the drives.
<message edited by uartin on Wednesday, June 27, 2012 2:50 PM>