Honestly, I can't tell what you're trying to do with the computer. You seem to be spending in all the wrong places (overspending on supporting components like PSU, Case, cooling, motherboard at the expense of core components like CPU & GPU). Unless your plan is to put together an overclocking 'trainer' - a cheap throwaway system you intend to burn out playing around overclocking with really high voltages in preparation for further overclocking on a new 'real' rig - your build makes no sense from a price/performance stand point.
For most people, a much better upgrade plan would be to stick with the computer you have now and upgrade to a new system all at once. And pick much different components. If you'd like help putting together a computer with higher performance for the budget, let us know what your purposes are (what you want the computer to do, being specific as possible with which components, what graphics quality you're aiming for if a gamer, whether overclocking for fun or just sheer performance is the core goal, etc), what your needs are (windows? peripherals?), and what you won't need (already have HDD? SATA DVD-burner? Monitor? Be as specific as possible).
For most people, a much better upgrade plan would be to stick with the computer you have now and upgrade to a new system all at once. And pick much different components. If you'd like help putting together a computer with higher performance for the budget, let us know what your purposes are (what you want the computer to do, being specific as possible with which components, what graphics quality you're aiming for if a gamer, whether overclocking for fun or just sheer performance is the core goal, etc), what your needs are (windows? peripherals?), and what you won't need (already have HDD? SATA DVD-burner? Monitor? Be as specific as possible).








