Sun Microsystems Inc claims to have won back the top spot in the overall market for advanced workstation systems, as defined by Dataquest by revenue. It’s trumpeting new Dataquest numbers from the second quarter of 1998 that estimate Sun did $930.2m on workstations (29.9% of the $3.11bn workstation market); compared with HP’s $833.8m, which includes Windows NT workstations; IBMs $305.4m; DEC’s $282.5m; SGI’s $254.5m; others at $220.2m; Dell $125.2m; Compaq $102.7m; and Intergraph $65.8m. Moreover Sun claims to have sold more Unix workstations in the period than all other vendors put together. Unix workstations accounted for 66.5% of all workstations shipped during the quarter, according to the market researcher’s definition. Sun sold 89,118, or 55.4% of the 160,754 shipped in the period and accounted for 45.1% of Unix workstation revenues, compared with HP’s 23,496 units (14.6%); SGI 20,067 (12.5%); others 11,651 (7.2%); IBM 10,496 (6.5%) and DEC 5,925 (3.7%). The Unix workstation market was worth $2.06bn in the quarter. Sun accounted for 45.1% ($930.2m); HP 24.2% ($499.2m); SGI 12.3% ($254m); others 7.3% ($150.8m); IBM 6.1% ($125m); and DEC 4.9% ($102.1m).