How much watts do I need ?

[bluemagma]

http://pcpartpicker.com/p/vQrYjX

Would I need 750 watts ?
Would the bronze b2 super nova be ok instead of the gold , I've heard good things from the b2

 

[Shneiky]

The 20 bucks rebate makes the PSU you chose a very good option for the money. I suggest you keep it.

 

[laviniuc]

b2 is made by superflower, g1 by fsp, i'd get the b2 even if efficiency is a bit lower it's better quality. you also spare a few dollars on the b2

the hole in my reasoning is the g2 sitting at 95 dollars.
http://pcpartpicker.com/part/evga-power-supply-220g20750xr

 

[Shneiky]

be quiet! Dark Power Pro P11 is also made by FPS and it is an outstanding PSU. FPS has a lot of good designs and bad designs - same like Superflower. Those are OEMs and produce whatever they are paid for.

 

[Rookie_MIB]

Whether to get the bronze or the gold all stems down to: what do you do with your computer? Turn it on only when you need it? Or run it 24/7?

First up the 750w target is right on assuming you're not going to overclock anything. With a rough 500w load at full tilt, you're right in the efficiency sweet spot (50-75% of peak power).

As for Bronze vs Gold. If you leave the computer on 24/7 then efficiency matters a lot more. Saving 10w per hour every day for a few years will add up eventually (but slowly), so if the amount you save over the expected lifespan is greater than the cost difference between the bronze and the gold, then go for the gold PSU.

Also, because gold rated PSUs are more efficient, they generate less heat. This in turn means slower fans (if they made it a 'semi-passive' PSU), and parts last longer with cooler temps, and the machine is quieter as well.

The price you're paying for the PSU is very reasonable, so there's not much reason to change it unless there's a very significant difference in price.

Meanwhile, if you're going to turn it on, game the hell out of it, then turn it off, at that point efficiency doesn't mean as much and the bronze would be fine. It might be a bit noisier though, although you'd have to read the reviews to find out for sure how it fares compared to the gold with the sound level tests.

Overall, nice build.

 

[bluemagma]

Thanks haha I will be overclocking the CPU , so is 750w too much , would I save money getting a 650w or is that not enough

 

[Shneiky]

750 is just spot on. You will fall into the golden 50% usage - which is where PSUs are most efficient. There are many small benefits except efficiency, but I won't waste your time.

 

[Rookie_MIB]

If you're going to OC, then leave the 750w. CPU overclocking usually winds up adding about 30w to the total power draw, so you're still good. I would NOT drop to the 650 if you're going to start OC'ing things. Power usage goes UP (exponentially!) when you OC, so why in the world would you want to DROP wattage capacity?!?

THINK MAN! THINK!

 

[Dark Lord of Tech]

Get the 750w B2 it's a very good power supply.

 

[bluemagma]

There's a 70 dollar difference between them