Hewlett-Packard Co points to new Dataquest figures which suggest that it has 27.3% of the $1,750m Unix mechanical design market in revenue terms, followed by Sun Microsystems Inc with 23.1%, IBM Corp with 22.1%, Silicon Graphics Inc 15.3%, Digital Equipment Corp 10% and Intergraph Corp 2.1%. According to the Dataquest numbers, Hewlett-Packard also recently surpassed Sun as number one Unix vendor in terms of revenue – 19.5% of a $19,700m market against Sun’s 18.2%, IBM’s 11.8%, DEC’s 5.5%, Silicon Graphics’s 5.5% and 39.4% other. Hewlett-Packard claims its share of the overall Unix workstation market increased by 3.8% in 1993 over 1992, compared with Sun’s 0.3% decline, IBM’s -1.8%, DEC’s -0.9%, Silicon Graphics’s 2% gain and others -2.8%. Hewlett-Packard’s workstation line now spans the Model 712/60 and 712/80, the four new models, the 725/50 and 725/75; the 735/99 and 735/125, the 755/99 and 755/125 (desksides) and 735CL clustered system. Hewlett-Packard marks down the competition in a series of SPEC and graphics performance and price comparisons: it says the HP 715/64 neutralises Silicon Graphics’s Indy R4600; the 715/100 CRX48Z obsoletes the Silicon Graphics Indigo2 Extreme, the 715/64 HCRX-8Z outmanoeuvres Sun’s SS5, the HP 715/100 HCRX-8Z embarrasses Sun’s SS20/61, while the 715/100 HCRX-8Z supersedes IBM’s 375.