Well, i wasn't planning on upgrading but i saw one f/s for $400 so i couldn't not grab it. Anyway i cannot seem to find any information about these two, i have the 2982 and I need one more.
http://www.evga.com/Products/Product.aspx?pn=04G-P4-1982-KR
http://www.evga.com/Products/Product.aspx?pn=04G-P4-2982-KR
http://www.evga.com/Products/Product.aspx?pn=04G-P4-1982-KR
http://www.evga.com/Products/Product.aspx?pn=04G-P4-2982-KR