Minimum Watt PSU for GTX 770 and i5-3570K?

[AnonyMews3]

Plan on building a new PC over the summer. Was wondering, what would be the minimum PSU wattage for a GTX 770 and i5-3570k. I was planning on buying a 600W but that cuts really close. Would a 650W be good? I don't plan on overclocking until I get enough money to buy a new PSU. thanks. I also won't OC the GPU.

 

[firo40]

That would be enough but you need to make sure its a good brand like seasonic of xfx of corsair or antec. Make sure its atleast bronze+ certified aswell.

 

[weatherguy]

A 600 watt Certified Bronze would do just fine but why save $25.00 now when you're going to OC later.

The difference between a good 600W and a good 750W will be a lot less than buying a 650W now and a 750w in a year. Just make sure you buy well rated PSU now.

 

[Sakkura]

600W doesn't cut it close, it's plenty for that configuration. 650W is a bit on the low side for SLI, but approaching overkill with just the one GTX 770.

But yeah, make sure you get quality. Any two-bit PSU brand can throw (fake) watts at you, but quality is what you should be looking for.

 

[4745454b]

The GTX770 is nothing more then an overvolted and overclocked GTX680. As such its a bit faster, and consumes more power. Up to 250W. Normal gaming won't see it hit this number but we need to build for worst case. A 250W GPU, a 77W CPU, and 50W for the rest of the system gives us around 377W for that setup. A 600W would be more then enough. Even a good 500 or 550W would be enough. (careful if you go 500W, many can only do 360W on the 12V rails and those aren't a good choice.) If you wanted SLI, then you are looking at 625W, so you'd need a good 750W at least. All of this assumes no overclocking as well.

 

[ismaeljrp]

Remember , the TDP is only what it is rated to handle. It is a maximum, and factory clocks and voltages never reach the TDP spec of a chip. They are usually much lower, %20 + lower. That extra rated TDP is just telling us how much of a beating the chip can safely take without damage, so when overclocking the right way, you wouldn't reach the max TDP anyway. You will get close though, so Extra wattage doesn't have to take into account overclocking, that's what the TDP is already doing for you.