Growth in the server blade market accelerated in the Q4 2007, with factory revenue gaining 54.2% YTY and shipments increasing by 35.6% compared to Q4 2006, according to IDC. Overall, bladed servers, including x86, EPIC and RISC blades, accounted for $1.2 bln in Q4 2007, representing 7.8% of quarterly server market revenue. More than 95% of all blade revenue is driven by x86 systems where blades now represent 14.8% of all x86 server revenue. For the full year 2007, worldwide blade server revenue grew 40.9% year over year to $3.9 bln.