Need help upgrading PSU

[allamerican02]

Hi there,

I am a novice when it comes to modifying my computer...I have a HP Pavilion a1357c Desktop and it has a 300 watt PSU. I wanted to upgrade the video card to something like an AMD Radeon HD 7770 or around that performance level, but I believe I will need to upgrade the PSU. Can anyone tell me a good PSU between 400-600 watts that are good for this model? Or how can I tell on my own? Thanks a lot for any help.

 

[socialfox]

This shall do the trick:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371045&Tpk=Antec%20Vp-450

Technically on a combined 12v rail you just want 23 amps. VP-450 has 36 amps which is more than enough.

 

[lilotimz]

Budget?

Antec NeoEco 400
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371029

Antec NeoEco 520
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371030

Antec EA380D
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&DEPA=0&Order=BESTMATCH&N=-1&isNodeId=1&Description=antec+ea&x=0&y=0

Corsair CX430
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026

Corsair CX 500
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027

Corsair CX 600
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

Corsair CX750
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139040

Seasonic S12II 430
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151074

Seasonic S12II 520
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151094

XFX 550
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013&Tpk=xfx%20550

 

[allamerican02]

You guys are the best. Thanks.

I notice that all of these are ATX12V. I guess that is what I should be looking for?

 

[socialfox]

pretty much...