Mitsubishi Electric announced the MELCOM80 GS700/10 office computer in November 1992. The model ran on a new 1.7 million transistor, fully-customized VLSI single-chip CPU developed by Mitsubishi Electric using 0.8-micron CMOS technology. This was the flagship of the MELCOM80 GS family, which went on sale in September 1991. The GS700/10 had twice the processing power of the previous top model, the GS600/30.
The main memory relied on 16 Mbit DRAM chips, the cutting edge at the time, and could be expanded to 384 MB by adding expansion memory units to the CPU board. The GS700/10 could support up to 150 GB of disk space, 2,048 workstations, 1,000 printers, and 384 communication lines. Despite being the most powerful domestic office computer, it fit into a smaller cabinet enclosure than the GS600/30.
The GREO relational database processor had triple the chip density, so it could fit on a single board, and double the processing power. The GS700/10 accepted up to three units of the single-board GREO called GREO-1U. In the maximum configuration, the GS700/10 could parallel process three database jobs simultaneously, thereby speeding up database processing times by three to 150 times from previous models.