The difference between the Bosch GCM 80 SJ panel saw and the Bosch GCM 800 SJ lies in several key areas:
## Power and motor - The GCM 800 SJ is equipped with a 1400 watt motor, while no specific power specifications for the GCM 80 SJ were found in the sources provided.
## Cutting capacity - The GCM 800 SJ allows cuts up to a depth of 70 mm and a width of 270 mm at 90°. There is no specific data for the GCM 80 SJ, but it can be assumed to have similar or slightly lower capacities.
## Additional functions - The GCM 800 SJ has no standard table extension and no cutting line laser, unlike the GCM 8 SJL, which has a laser and better suction. However, it is not clear whether the GCM 80 SJ has these functions or not.
## Mobility and workmanship - Both saws are compact and mobile, but the GCM 800 SJ weighs 13.5 kg and is designed for professional use. The GCM 80 SJ probably has similar features, but specific details are missing.
## Table adjustment and dust extraction - The GCM 800 SJ has no large side table extensions and no 2-point dust extraction, which is the case with the GCM 8 SJL. It is unclear whether the GCM 80 SJ offers these functions.
Overall, the GCM 800 SJ and especially the GCM 8 SJL offer more functions and higher performance compared to the GCM 80 SJ, which is probably a simpler and cheaper option.