How strong PSU do I need for my system

[omil]

Hello,

I'm upgrading my pc (or, more accurately, replacing almost everything except things like hdd, dvd drive, case etc.) and I was hoping for some general idea about what PSU to pick.

System will end up looking something like this:

HD 6770 1GB DDR5 128bit
AMD Phenom II x4 960t 3GHz
MSI 870-C45
4GB DDR3
300GB hdd (4 years old now but I don't feel like I need a bigger one)
1 DVD/RW drive

Final configuration may still be subject to small change but this is pretty much the price range I'm aiming for.

I don't necessarily ask for a specific PSU since I might not be able to buy it in my local shops, but some general idea of how strong it needs to be would be greatly appreciated, thanks.

 

[totalknowledge]

400-450W should be fine. The power req on the 6770 isn't that big.

 

[omil]

Is that 450w as in advertised on the case, or something like calculated 12V power? I only read a few threads about PSUs and I'm not all that savvy.

Anyway, my PC already has a 450w PSU so that looks like it's enough? And thanks for the quick reply.

 

[ionut19]

As something like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817171060&cm_sp=Cat_Power_Supplies-_-Spotlight-_-17-171-060 (just an example), not like a 15$ PSU witch is a poor quality one and might burn and take your hole system with it. If you have a quality PSU already, use it, if it's a no name one buy another.

 

[davcon]

A quality 400W+ psu with 1x PCI-E will run your specs.
Ideally it would be a wise investment to buy a 500-600W with 2 x PCI-E 6 pins if you ever decide to change your gpu.
Don't buy junk!
Antec,Corsair,XFX,OZC,and Seasonic offer reliable units.

 

[ko888]

At a minimum you should have a power supply with a combined +12 Volt continuous current rating of 24 Amps or greater and it should have at least one 6-pin PCI Express supplementary power connector.

Total Power Supply Wattage is NOT a crucial factor in power supply selection!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important.

 

[omil]

Thanks for the advice, everyone. I'll look for a PSU that fits into those parameters.

 

[omil]

Best answer selected by omil.

 

[Mousemonkey]

This topic has been closed by Mousemonkey