Well, not that much. [link|http://www.friends-partners.org/mwade/project/mol.htm|MOL] - Manned Orbiting Laboratory. IBM had the contract for an easily re-configurable "triplex" system using 3 IBM 360/67 CPUs. I was an engineer on the 67 CPU and briefly helped getting it to work with what IBM called Large Capacity Store (LCS) - all of 8 MB of memory with 8 microsecond (NOT nanosecond) cycle time. To be fair, LCS belonged to the preceding generation of technology. LCS was relatively cheap. The normal IBM 360/67 memory had an 800 nanosecond cycle time core memory and most machines had 512 KB. 256 KB cost the customer about $250K.
The MOL project was cancelled in 1969.
Further OT: While on a surprise field trip helping with the first integration of LCS and 360/67 CPU delivered to Carnegie-Mellon U. in Pittsburgh, Isreal fought the Six Day War. I was in Pittsburgh a week.