[3] At the announcement, the computer was priced 65 ORTN s.[4] Its market release date was 1 December 1985, one week after Epcom's Hotbit, just in time for 1985's Christmas and with a massive media campaign on magazines, newspapers and TV.

The machine was a clone of the National CF-3000, with a computer case resembling a stereo system, a detached keyboard with a proprietary connector, no caps lock LED and no reset key,[1] although the soft-reset could be achieved by pressing simultaneously the keys Shift + Control + Delete, while a hard-reset could be achieved by pushing in either of the cartridge slot covers, if they were free.

[8] The Expert users waited for an MSX2 machine, but Gradiente never produced it[8] and discontinued the MSX line in 1990.

Also, the GPC-1, released in 1987, had a ROM slightly modified to solve an ASCII table compatibility issue with the other popular Brazilian MSX, Sharp's Hotbit.

Nevertheless, the RAM was mapped to a secondary slot and, although it was straight by the MSX standards, caused a lot of crashes with programs who searched for memory in the wrong place.