Which power supply should i buy.

[MAVAFRA]

i need one under $50 that have all the cables i need for my motherboard and the other parts.
i find these options:
- Cooler Master eXtreme Power Plus 500w Power Supply ($44)
- Logisys Corp. 550W 120mm Ball Bearing Fan with PSU ($34)
I'm sure there are more options but i don't know anything about this.
The other parts of the pc are:
- Intel Core i5-3570 Quad-Core Processor 3.4 GHz 6 MB
- Gigabyte AMD Radeon HD 7850 2 GB GDDR5
- 8GB Corsair Vengence 1600hz 4X2
- 500GB Western Digital Caviar Blue Hard Drive
- Gigabyte LGA 1155 Intel Motherboards GA-B75M-D3H
- NZXT ca-ph410-g1 Phantom 410 Mid Tower
- AOC E2351F 23" LED Monitor
- Lite-On Super AllWrite 24X SATA
- Razer Arctosa Gaming Keyboard- Silver
- Perixx MX-2000B, Programmable Gaming Laser Mouse
I really need help with this. it's the first time i'll build a pc. thanks for the attention.

 

[chugot9218]

The PSU is the absolute last place you want to skimp on components, if you don't have the money to spend on a decent PSU, drop something somewhere else. I would not trust my components to either of those PSU's, and very few at that price.

 

[ronintexas]

This one is $59 - and a better choice:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371063

 

[ubercake]

I recommend you spend $15 more for a 620W PSU made by a top-notch PSU manufacturer called Seasonic:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151096

Like chugot9218 stated, the power supply should be considered the most important component as how it functions will affect the rest of your expensive components. If you take a chance and go for a value PSU, you could end up ruining your entire system just to save a few bucks.

Not that you need that much wattage, but at $60, this is what I'd choose. I tried to find anything I'd use 500W and up on newegg and found I wouldn't use anything less than those PSUs at the $60 price point.

 

[k1114]

http://www.amazon.com/dp/B005ILWY9G/ Hive 550 for $56.