ZBrushCentral

memory Error problem

hi guys ,

i am trying to export normal and displacement maps using the default and the multi map exporter m i keep getting the error that there is in sufficient amount of system ram ,

I created the model using zsphere, then exported to maya for changing the basic mesh flow and then brought it back into zbrush to to give detail , the model contains 22 million polygon.

any suggestions as how to go about it …

System specs:

i3 processor
16 gb ram,
qudro 600 1 gb ram