The IBM System/370 Model 168 was announced on Aug. 2 1972. The memory was "four-way doubleword interleaved" and could be 1 up to 8 megabytes and offered "tightly coupled multiprocessing". The related IBM 3330 family of disk drives featuring removable disk packs with up to 200 megabyte capacity, the console printer could output 85 characters per second, and the system console included a light pen and a microfiche document viewer. The System/370 Model 168 was finally withdrawn on Sept. 15 1980.