I Loaded the latest drivers for both the 780aSLI chipset and the GTX260 Cards last night and checked the ram on both cards with Everest this morning, they are the same. I had assumed they were the same as I purchased identical cards at the same time but anything is possible.
I have an Antec Earthwatts 650 PS. This PS only has 2 6 prong SLI plugs, the cars require 2 plugs each so I picked up second feed using the molex adapters that came with the cards.
This is the link for the PS:http://www.newegg.com/Product/Product.aspx?Item=N82E16817371015
This is the link for the MB:http://www.newegg.com/Product/Product.aspx?Item=N82E16813131343
This is the link for the Graphics Cards:http://www.newegg.com/Product/Product.aspx?Item=N82E16814130433
I will check out the link notty22 sent later today.