Compared to the Surface 3, the Microsoft Surface Pro 3 has a larger screen of 12.1 inches compared to the 10.8-inch display of the former.
In 2014, Microsoft has shipped over two million units of Surface and Surface Pro series products so the over four million target this year is quite lofty.
Since October 2012, when Microsoft first released its Surface tablet, the company has sold over 12 million units, with the best recorded sales coming during the fourth quarter of 2014. The company recorded a 24% increase compared to the same quarter in 2013.
With the over four million units target for the Surface Pro 4 and Surface 3, Microsoft total Windows-based tablet shipments for the year will exceed 15 million units, which is 30% higher than its past sales combined.