x86 servers saw their revenue market share grow from 45.9% in Q4 2006 to 49% in Q4 2007, according to IDC. Sales of Windows and Linux grew 12.8% and 8% respectively. While Unix performance remained strong, growing revenue by 3.1% annually, it is Windows that is now the clear market share leader with 35.7% or the total EMEA revenue. Both z/OS and i5/OS saw their revenue decrease by 9.1% and 3.9% respectively. Blades growth continued unabated with sales going up 55% annually and approaching the half-billion dollar mark. Pedestal servers are the single most important segment with 50.2% of the total revenue in Q4 2007, despite negative annual revenue growth.