The DEC VAXserver 3500 is a high end variant in the MicroVAX III series. Codenamed 'Mayfair', the VAXserver 3500 was introduced in September 1987 and makes use of a 11.11MHz CVAX chipset. The CVAX microprocessor is a second-generation single-chip VAX ISA implementation, containing 134,000 transistors on a 9.4 x 7.4mm die, and fabricated using DEC's first-generation CMOS process. The entire CVAX chipset consists of six chips: the CVAX 78034 CPU, CFPA floating-point accelerator, CVAX clock chip, CVAX System Support Chip (CSSC), CVAX Memory Controller (CMCTL), and the CVAX Q-Bus Interface Chip (CQBIC).