Well Namix, I don't see a need for the jump to 1866 memory. That seems like an unnecessary extra bit of money spent. If it were an APU, I'd understand, but no one will notice a difference which would make the money wasted in my mind.
Though I agree on the drop from a 1 TB to 500 GB HDD. You will never fill 500 GB of storage unless you either own and download every game you can find which would be silly as you wouldn't be able to play them all, or you rip all your Blu-rays/DVD's. Otherwise, I'd buy a second HDD for backup with the money saved from dropping from 1 TB to 500 GB.
I don't see the reason for the jump in PSU wattage either. 550 watts is perfect for a system like this. Unless you plan to upgrade to SLI/Crossfire or overclock everything and get tons of HDD's, you should be fine with 550 watts Smoke.
Other than those things, I'd say you are good Smoke.
What do you want to do with this system? What level of gaming detail are you looking for and the like?
Opps the RAM is a left over from an APU build from a diff post :) and the reason for the jump in PSU is to keep the option open for upgrades/OCing in the future. As i said tho it was just a quick build to show other routes the OP could take
This build is to replace my current system I built about 5 years ago now, which runs great with dual monitors and still plays most games if only at a low resolution.. As far as serious gaming is concerned, I'm a bit overdue for an overhaul, But statisfied with +/- 720p 30fps gaming. Also trying my best to stick to a $750 budget.