With this kit:
Corsair 8gb (quad channel):
http://www.newegg.com/Product/Product.aspx?Item=N82E16820233234
work with this kit:
Corsair 16gb (quad channel)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820233143
on this motherboard:
Sabertooth X79
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131801
Corsair 8gb (quad channel):
http://www.newegg.com/Product/Product.aspx?Item=N82E16820233234
work with this kit:
Corsair 16gb (quad channel)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820233143
on this motherboard:
Sabertooth X79
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131801