Overall shipments of graphics AIBs for the quarter came in slightly above the last quarter at 19.03 million units compared to 18.84 million for Q4’10. Shipments in Q1 2011 did not exceed the same quarter a year ago. Nvidia unit shipments decreased by 2% from Q4, while AMD increased 5.7% for the same period.

http://jonpeddie.com/publications/add-in-board-report/
Nvidia lost a bit, AMD gained a bit, but Nvidia are still selling more cards.

