Those chips look shite anyway.
You'll never ever get 20 degrees off with a standard cooler - maybe 10 at most, and more likely 5. The Zalman Flower is very much the exception to the rule - in that it sits approximately several thousand feet about the heatsink.
Generally you shouldn't need a fan at the front of the PC. Basic physics suggests that whatever is blown from the case must be brought in at some point, realistically from lower than the exhaust point, if there are any holes to draw air from.
All a fan at the front does is draw and direct that air more precisely, and if in front of hard drives, cool those.