Just so you guys know we have 1 Buster 11 chip left in stock fresh system pull for sale if you are interested pm me. Its a good idea in General to have a Buster 11 in your a3k or a4k as it improves many things on the bus... with a lot less bugs and more speed. As shown in this thread many of the high end zorro 3 cards need buster 11 to run correctly!