First time going SLI need advice

[McRooster]

Hey guys

I'm thinking about doing some SLI to help run a few of my games at higher settings/FPS
Right now I have a
Asus GeForce GTX780 902M/6008M 3GB GDDR5
http://www.newegg.com/global/au/Product/Product.aspx?Item=N82E16814121769R&cm_re=asus_gtx_780-_-14-121-769R-_-Product

I also only have a 650W power supply. Although I do have a 750W power supply at hand if needed.

Will I need to get the exact same graphics card? Or just a one with the same memory and clock speed?

 

[mickypheonix]

Hi McRooster
get the same gpu - 780 with 780 , clock speed does not matter , brand does not matter, same memory
https://www.youtube.com/watch?v=cxc6cb3_y0w

 

[unknownofprob]

you need the same graphics card to work, so get another GTX 780, no matter the difference. You will also need to use your 750W PSU.

 

[Eduello]

Hi McRooster
get the same gpu - 780 with 780 , clock speed does not matter , brand does not matter, same memory
https://www.youtube.com/watch?v=cxc6cb3_y0w

+1 for this.

About the PSU though, neither 650W nor 750W will be enough for GTX 780 SLI, 850W is the minimum I'd recommend: http://www.realhardtechx.com/index_archivos/Page362.htm

 

[McRooster]

Yeah I can grab a 850W power supply. My CPU is not OC (i7 3770k), although if I did want to OC it and the GPUs (with the manufacturers software settings) what power supply would I need? Perhaps 1000W?

 

[mickypheonix]

i would go 1000 w for headroom especially if overclocking
get a quality psu from seasonic/xfx or corsairs TX,HX or AX range of PSU's or any psu from coolermasters V series or Evga supernova series

 

[Eduello]

Yeah I can grab a 850W power supply. My CPU is not OC (i7 3770k), although if I did want to OC it and the GPUs (with the manufacturers software settings) what power supply would I need? Perhaps 1000W?

1000W would be the sweet spot for a build like that with OC.

 

[unknownofprob]

to be honest 1000W would be overkill, a 850W PSU of a quality nature will perform just as good even for overclocking.

Just get a PSU like the Antec HGC-900, I have this PSU and love it, exceptional for the price.