This growth in integrated graphics helped ATI boost its overall market share from 26.5% in Q4 2005 to 28.7% in Q1 2006. Peddie nonetheless ranks Intel at number one with an estimated 39.1% market share in Q1 2006, 1.6% higher than last quarter. Meanwhile, NVIDIA is ranked third with 19% of the overall market after a meager 0.3% jump from Q4 '05 to Q1 '06. Growth from the top three took its toll on VIA, SiS, and Matrox, which saw respective market share drops of 3%, 1%, and 0.1%.
Despite ATI's largest overall market share growth, NVIDIA saw the biggest increases in the discrete desktop and mobile graphics segments. On the desktop, NVIDIA's share rose 1.5% to 53% from Q4 '05 to Q1 '06, while ATI's declined 1.2% to 45.1%. On the discrete mobile front, NVIDIA's share climbed nearly 5% from 20.3% to 25% while ATI's fell from 79.2% to 74.6%.