650W enough?

[Jeff_s510]

so im ordering a new power supply and case today, going to go with a corsair 550D...something silent but im wondering if the corsair AX 650 will be enough....i curently have an I5 2500K overclocked, and a GTX 560Ti, and i would like to ensure i have enough power to run an SLI setup at a later date. or even duel 670's....will the AX 650 do? i chose the AX series because i want something FULLY modular

 

[Ru5ty_t00l]

I don't think so
750w is the recommended for GTX 560Ti in SLI.

 

[Excalabur50]

Yes as said a 750 should be more than enough

 

[Jeff_s510]

My next question, i want to replace the fans in the 550D, thinking the corsair fans....just wondering, should i get the SP or AF 120mm fans for the case? and should i get the high performance, or the quiet edition? or would the high performance with the voltage step down adapter do? im asking about the SP vs AF because im guessing the 550D would have some restriction on the air intake which might make the SP fans better? and i do want to keep the noise levels down. also i will be running a + air pressure in the case....carpet in the room makes for a pile of dust, and forces me to clean things too much....so filtered intake will be nice

 

[Excalabur50]

Use the AF fans for the case as the others are for Rad's if you want to quite them down use the fan speed reducer they come with

 

[Jeff_s510]

Use the AF fans for the case as the others are for Rad's if you want to quite them down use the fan speed reducer they come with

so AF performance fans?

 

[jamesriley94]

Use the AF fans for the case as the others are for Rad's if you want to quite them down use the fan speed reducer they come with

No, the SP fans are for where you need static pressure to help pull through. Yes on rads, but the 500D has silencing foam around it so a higher static pressure is needed to pull the air through. I would personally be going for the SP version, with an AF on the rear. I'm not too sure how much difference it will actually make though.

 

[seumasbeathan]

I would think that a 650w psu would be fine for sli, I think the minimum requirement for it is a 600w so a very good quality psu like the ax650 should be fine.

As for potentially using 2 670's, the 670 actually uses les power than the 560ti does

 

[AverageNinja]

You're going to need an AX850 for dual 670s mate

 

[seumasbeathan]

You're going to need an AX850 for dual 670s mate

No he's not, A 670 uses less power than a 560ti and a 560ti can easily be run in crossfire from a 650w psu