
Would a stock i5 cooler be compatible with a q6600 socket?
I don't think so.
An i5 processor would be S1155 or S1156 (the mounting holes for these are the same).
A cooler designed to fit those would not fit the mounting holes for S775.
I think you might incorrect there mate regarding the 1155 and 1156 mounting holes in the Mobo. They're about 2mm different so an 1155 cooler will not fit on an 1156 mobo. The only option is to get cooler specific for the socket type. Best bet is to get an aftermarket cooler that has the various mounting options available

I think you might incorrect there mate regarding the 1155 and 1156 mounting holes in the Mobo.
