I am a SLI newbie.

[Wayves]

What all needs to be SLI compatible for a SLI system to work?

 

[chupacabra]

Only certain things like video card,mother board and power supply mostly

 

[Wayves]

How much of a power supply would you recommend for a safe SLI system?

 

[hermeslyre]

Depends on what cards you are planning to SLI.. You also need to take into consideration the amperage on the +12v rail.

 

[elitehacker]

I would say you will need at LEAST a 500W power supply for a SLi system.

 

[Wayves]

so a 600-650 would keep me pretty safe, im going to have like 8 computer speakers with a maxed out sound system, not sure if that requires more etc.

 

[Tuffie]

Post your system and we will be able to tell you what PSU you will need.

Kent.

 

[kof2000]

sli mobo, 2 video card, same card recommended, enough juice on psu amps doesnt HAVE to be sli certified but it is safer to have one. remember to plug the 4 pin power on the mobo... as least mines has one and is required or it won't work. connect the sli bridge, if it wont fit then you know you plug one card into the wrong pcix slot. you need to reinstall the video drivers.