SLI power requirements

Im looking for the power requirements for a GTX260 and gtx280 in SLI set up. I have a Thermaltake 750W PSU. Not sure if it could power either of those set ups.
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More about power requirements
  1. yes the 750w will be enough for those setups.
    im currently running my 2 gtx260 in sli with a 500w.
  2. You can start up and play old games with little amount of watts, but playing games understress like cod4, your computer will guarantee shutdown. I'd go for 700w+. 750 sounds good.
  3. The only thing youll want to check is if your thermaltake has enough power PCI-e connctors for it think youll need 4 from memory. I know it can be done with molex converters but its ugly i recon.
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