Hewlett-Packard Co’s latest assault on the ISP market is aimed squarely at Sun Microsystems Inc. It has a pair of new Unix servers, a couple of new WinTel NetServers, 20 new partnerships with ISP ISVs and some leasing and financing options. The two Unix boxes are 9000 series systems. The A-Class uniprocessor uses the180MHz, 32-bit PA-7300. It costs from $2,400. HP says it can rack-up 20 of the boxes compared with the 13 Ultra 5s Sun can fit into the same space. It runs 32-bit HP-UX 10.20 or 11.0. The R- Class, from $11,400 uses one or two 64-bit 380MHz PA-8000s or 390MHz PA-8200s and runs HP-UX 11.0 or 10.20. It says a 12-CPU rack of six R390s performs at 24,102 SPECweb96 versus the 8,715 Sun achieves with three Ultra 450 quads in the same package.