I have a strange problem with my 2008 3.2GHz 8-core Mac pro w/ 2GB ram running Leopard. I purchased the new style 4 x 1GB ram upgrade from Kingston. When I install it into dimm slots 2 and 3 on each riser the system profiler only sees 2GB on riser B and nothing on riser A.
If I pull out the ram from dimm slot 3 on each board the profiler sees all that is installed, 4GB. Apple says that the Mac Pro can handle up to 32GB but mine seems to have a limit of 4GB. Am I missing something? Should I have sacrificed a chicken before installing?
I've emailed tech support at Kingston to see if they have any suggestions.