flong :
The PC Power and Cooling Silencer PSU has some problems with noise (read Johnny Guru's review) and it is not modular. It also heats up. For about the same price you could go with the Corsair HX 850, but it is a little small. The Corsair AX 1200 would be perfect if it was in budget.
Yeah, switching to the AX1200 would be my first upgrade if the budget allowed. I went with capacity over efficiency, but I'll change it.
flong :
I like the first build better. It is screaming fast and has the Patriot Wildfire running the OS. You would have to be a heavy gamer to appreciate its sheer capacity. Still think you should go with 1866 RAM though.
The cheapest kit would raise the price $19. But I guess that shouldn't matter, it's a $2000 build.
Edit: Changed it, and with a different motherboard came in under-budget after rebates.