i recently bought one pny 9800 and i found out i needed a power source with an 8 pin connection. well the only on i could find had 2 8 pins so i figured i would get another one and sli them. my problem is i dont know what KIND of connection i need to sli them or how much watts i need power source wise to run them. If someone could pls help me i would appreciate iti cant tell you how much you need exactly, but i can tell you that i would not be purchasing a power supply less than 1000w.ok 1st why in the world would you need 4 of them!!! did you aready buy a second? quad sli scales even worse then dual I THINK if you MUST buy a second one for some unkown reason what is your motherboard?
i would agree with homer a 1000 watt power supply will doi dont think ill need a 1000w's or atleast not NORMAL continous power, i mean the cards will take 300 watts when under full load so i will need 600w for the cards and like 150 extra for the rest of the computer so i mean i ordered a power source with 750w contious and 1050 maximum contious i think that will do fine
Good luck with that...
You should have listened to Homer...Quote

750w contious and 1050 maximum contious

• you want to SLI two 9800 GX2's
• for one 9800 GX2 it is recommended that you have at least a 600w power supply, again thats for one 9800GX2
• it is also recommended that the +12 volt RAIL(s) that will be supplying the supplementary power to the card(s) be capable of handling at least 28 Amps.
• the 750w PSU that you chose is only capable of 19Amps per 12v rail
• 150w for the rest of the computer is nothing. a Q6600 CPU under full load will DRAW up to ~110w, leaving 40 watts for the fans, harddrives, RAM, optical drives...
• do i need to go on? ? ?

if you go under specifications it shows u that is 9800 gx2 sli certified

it says it can run them

so why do i need one that is 1000w

also what is hybrid sli