OEM stands for original equipment manufacturer. What this basically means is it was made by the original inventors of the product. Due to the fact that technology sucked in those days, it is inferior to retail which means re-tail, or in other words repackaged tail. This means it was made at the TAIL end of the product cycle, which would be more recent and newer technology. It' basically like this: do you want RAM made by Thomas Edison or Crucial?
Return the RAM and buy a dell. Dude, you're gettin a dell.
Return the RAM and buy a dell. Dude, you're gettin a dell.