anyway guys all i want to know at this point on what power source i need to beable to run the card and the new cpu with out me having to empty my pockets in to a device i'll never use to its full potential so really i just want a good power source that matches the old one enough where it is easy to install
The 450W Rosewill CAPSTONE Modular Cable Version Series for $69.99 shipped at Amazon.com
The 450W SeaSonic G Series for $74.99 shipped at Amazon.com
Or if you thinik you will have two powerful video cards in the future, then you can order today and get the 650W SeaSonic G Series for $74.99 shipped with the promo code
72HRSL093 (ends today), and then there's a $15 Mail-In Rebate (which ends today as well):
SeaSonic SSR-650RM 650W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply - Newegg.com
Here's a look at the power consumption of the GTX 550 Ti:
GeForce GTX 550 Ti review MSI Cyclone II OC - Power consumption
With one GTX 550 Ti under load in
their power-hungry system (take note of what's in their system!), their PSU pulled 289W from the wall outlet. Their CPU was idling, so I have to add 65W for the E4500 or the E7500. So with the 550 Ti and the E7500 (or E4500) both under full load, the PSU would then be pulling 354W from the wall outlet. This means that if the PSU is 90% efficient, then the computer is pulling 318W from the PSU. Your gaming power draw will be even lower at about 200-275W, maybe as much as 300W for some games. Then you have to remember that these calculations are based on their power-hungry system, so we can easily knock off another 25-50W.
If you were to use a CPU that can pull up to 125W while under full load (such as a modern AMD CPU), then the final calculation would be 372W absolute max in extreme situations (unrealistic situations), and about 275 -350W while gaming. Again though, knock off about 25-50W because these calculations are based on Guru3D's power-hungry system. So really, it would be about 225-300W at the most while gaming with a more powerful CPU like yours.
The two 450W PSUs I recommended are able to easily deliver 450W 24/7 up to an internal PSU temperature of 50°C. Therefore, these PSUs would have absolutely no problems with that and the average efficiency would be better than it would be if a 'bigger' PSU were used.
Being that these are modular PSUs, installation should be a breeze.
