The IBD 50 list of top-performing stocks this week is built in part on a diverse group of computer hardware makers. 3D Systems (DDD) and 3D printing system rival Stratasys (SSYS) have been standouts for several months and were big IBD 50 stock winners last week. But here are six other tech hardware firms that are making their mark. The top two disk drive makers made the list. The PC storage sector has seen brutal consolidation in recent years.