Two Options

[MrRylod]

I have that pc
-GA-GAMING B8 (B250)
-i5 6500 stock
-Gigabyte rx 480 4gb g1 gaming
-Inwin 303
-x2 fans CORSAIR SP 120 RGB
-Cooler Master hyper 212X
-RAM 8GB 2133 Hyper X
-HDD 1TB

1. How many watts do I need for my pc?
2. What is better?
- 500W CORSAIR CX500 80PLUS BRONZE
- 650W COOLER MASTER 80PLUS BRONZE

In spite of there's differents between watts, in my shop have the same price, so I need to know what is higher-quality (noise, temperature, durability...)

PS: My native language isn't english, sorry if I have a mistake

[-The_Mask-]

A good quality 300W with at least one 8 pins PEG connector and 23A at the 12V is the minimal. But finding such a PSU is difficult, most 300W PSU's aren't that good. Because the lack of good 300W power supplies, 400/450W is more logical.

The two power supplies you named aren't good choices. The Corsair is old and end of life, there is already a much more interesting lineup which ends with x50W models. The Cooler Master is a GM? It's better then the Corsair, but really overkill. You can easily power two GTX 1080's with a 650W power supply and have room for overclocking the CPU and graphics cards.

So can you give us a link to the store, so we can see what's available?

[MrRylod]

I don't know anything about the PSU's. Thanks for help me, and I learn more. But in my shop both power supply have the same price, is 650W COOLER MASTER 80PLUS BRONZE so cheap? (The price is $77)

The store where I buy don't specify what model is each power supply and don't sell good power supplies, however this is the link:http://lina.speedlogic.com.co/

[-The_Mask-]

The two EVGA's, 450W and 500W 80PLUS Bronze are also an option. These are probably the EVGA 450B and 500B, not better then the CX500 but comparable and cheaper.

However if they also could be the much better EVGA 500BQ and EVGA 450B3. So maybe you can ask them the real name and also if they can deliver a Cooler Master GM 450W, Corsair CX450M or the EVGA 500BQ and EVGA 450B3. If they could one of those should be your choice otherwise the EVGA 450B or 500B makes the most sense.

[MrRylod]

Thank for your opinion, I'll keep this in mind