Confused about PSU

Okay i wa slooking at a power supply calcualter earlier and i had a wierd result so im posting it here to see if you agree with it, i have a 600 watt PSU and im upgrading certain parts, heres what ui put in and my results:

AMD phenom 2 965 3.4 GHz

2 sticks of ddr3 ram

2 10k rpm drives

2 hd 5770 in crossfire

soundblaster

8 usb ports

2 cd drives

ok there the main things and the calc said i only need 456 watts, that cant be right can it? I ran it a few times to make sure.

Sounds about right. Two 5770's take a lot less voltage to run than you think. I calculated the maximum wattage that the system could take, and I got 491W. So anything with around 45A on the 12V rail (left a 10% buffer between actual and available wattage) should be good for you.

Okay i wa slooking at a power supply calcualter earlier and i had a wierd result so im posting it here to see if you agree with it, i have a 600 watt PSU and im upgrading certain parts, heres what ui put in and my results:

AMD phenom 2 965 3.4 GHz

2 sticks of ddr3 ram

2 10k rpm drives

2 hd 5770 in crossfire

soundblaster

8 usb ports

2 cd drives

ok there the main things and the calc said i only need 456 watts, that cant be right can it? I ran it a few times to make sure.

jack_jackass

Ah sweet, thanks guys, didn't realise how less of power consumptions the new cards are :Pthanks again.

Okay i wa slooking at a power supply calcualter earlier and i had a wierd result so im posting it here to see if you agree with it, i have a 600 watt PSU and im upgrading certain parts, heres what ui put in and my results:

AMD phenom 2 965 3.4 GHz

2 sticks of ddr3 ram

2 10k rpm drives

2 hd 5770 in crossfire

soundblaster

8 usb ports

2 cd drives

ok there the main things and the calc said i only need 456 watts, that cant be right can it? I ran it a few times to make sure.

jack_jackass