Your Cooler Master CM 690 pc case is 8.39 inches wide. It can easily accomodate any of the 160mm tall tower style cpu heatsinks and have some room to spare.
Here is a link to a recent Tom's Hardware article with useful information about 10 popular cpu heatsinks:http://www.tomshardware.com/reviews/lga-1156-heatsink,2535.html
I know the article states Intel LGA 1156 heatsinks but just about all of them are also compatible with Intel LGA 1366 cpu's
Here is a link to a very good web site with more useful information about cpu heatsinks that will help you make an informed decision: http://www.frostytech.com/top5heatsinks.cfm
You can use the Google embedded search feature at the web site to find more information about heatsinks for specific cpu sockets.