AC Input Current (ARMS)????

[sushisky]

So I'm a little confused about the AC Input Current (ARMS) thingy. I'm buying the PSU (XFX 750W Black Edition 80+ Gold) from Singapore, so I'm a little worried about the power requirements :/

A little help here please (thanks in advance)

 

[Zoot]

RMS Current or Root Mean Square is basically the peak value of current you get from the wall divided by the square root of 2, it's not something you ever need to worry about.

From the specs you've circled you'll notice the input voltage of the PSU you've picked is 100-240V and the input frequency can either be 50/60Hz, which covers pretty much the whole world.

In short, buying the PSU from Singapore won't make a difference. It'll work fine wherever you're based in the world.

 

[sushisky]

o.o Thanks!

another quick question: should i get a 750W or a 850W? I'm going to be running a i7-4770K, gtx 770 and some fan controllers and the such.

 

[Zoot]

750W should be fine.

You'll get away with less, but in the event you want to run a heavy overclock on both the CPU and GPU, or add a second GPU, it's no harm to have the extra wattage available.