Hi...this is my first post here...I am about to upgrade my poor slow Nvidea 5200 8X AGP for a Nvidia 6600GT,trouble is I have seen two at the same price...onehas 256 Mb of DDR..the other 128Mb BUT the first one states that it has 128bit width with 8 pipelines...the second states that it has 256bit width and 16 pipelines....is this a mistake or is there one actually made??..thanks for helping a not very computer literate (yet) guy...regards...John.