PowerPivot in sharepoint 2010 previously called as GEMINI

PowerPivot is previously called as "GEMINI".

Power Pivot is an inmemory database technology that runs on server or client.

we have
1) SQLServer powerPivot for excel
and
2)SQLServer powerPivot for sharepoint2010.

Using this power pivot we can manage millions of records and we can search in seconds for the data. :)