IDC reported global first quarter 2013 server revenue to be $10.9 billion, which is a 7.7 percent year-over-year decline. Gartner reported the revenue decline to be only 5.0 percent, coming in at $11.8 billion.
In terms of server shipments, IDC reported that 1.9 million units were shipped in 1Q13, which is a 3.1 percent year-over-year decline. In contrast, Gartner reported only a 0.7 percent decline in server shipments, with 2.3 million units.
The title of top server vendor in the world depends on how the question is asked and who is answering the question.
According to Gartner, IBM is the top server vendor in the world by revenue.
According to IDC, HP is the top server vendor in the world, with revenue coming in at $2.95 billion against IBM’s $2.79 billion.