Which PSU should i buy?

i have –
ntel Core2Duo E4500 3.2 GHz,
Mercury PI945GCM (MoBo),
3 GB RAM MEMORY 667 Mhz,
160 GIGABITE HDD ( RAM MEMORY and HDD are regarding some regional brand )

obtaining an HIGH-DEFINITION 4850 1GB

which PSU a few pointer buy

With a Radeon HD 4850, you will need at very least a 450-500 watt psu.Going above that provides you deep breathing room for future extension.

Get a psu from your quality manufacturer like Corsair, Seasonic, Silverstone, Antec or OCZ.Enermax can be great as well, but too costly for this tastes.

http://www.newegg.com/Product/Product.aspxItem=N82E16817256061

http://www.newegg.com/Product/Product.aspxItem=N82E16817139018

http://www.newegg.com/Product/Product.aspxItem=N82E16817371016

http://www.newegg.com/Product/Product.aspxItem=N82E16817341016

Cooler Master can be a decent funds option, but not as good as the brands listed earlier mentioned.

http://www.newegg.com/Product/Product.aspxItem=N82E16817171031

Electricity supply brands/lines positioned by top quality:

http://www.eggxpert.com/forums/thread/323050.aspx

For this hardware your 500 watt energy supply would have been a minimum
http://www.newegg.com/Product/ProductList.aspxSubmit=ENE&N=100007657%20600014021&IsNodeId=1&name=501W%20-%20600W Dont proceed cheap and always get a brand identify unit such as corsair, thermaltake, coolermaster, ocz, 80+ certified

Depends on simply how much power 4850 pulls, 400W must be enough, but I’d select 500W in case you prefer to add a lot more stuff afterwards.
I have an Antec, and also it’s really decent.Corsair and also Coolmaster can be pretty wonderful too.

http://www.newegg.com/Product/Product.aspxItem=N82E16817153113

if u live by the microcenter or perhaps frys, examine there furthermore.Get the best brand psu.Will not skimp.