STAMFORD, CT, Aug. 25 -- Worldwide server revenue rose 7.7% last quarter, topping $11.5 billion, tech research firm Gartner Inc. reported today. Shipments were up 24.5% over last year, to 1.6 million units.  

Based on server revenues, IBM remained the top vendor, with sales up 10.8% to $3.5 billion, good for a market share of 30.7%. Dell's revenue rose 20.1% to $1.1 billion, making it fastest growing OEM among top-tier vendors.

H-P led the way in shipments, with 463,489 units. Sun Microsystems showed the highest growth rate, with shipments up 38.4%, to 90,487 units.