If you do not have adequate cooling, you should add a better/more efficient heat sink. However, you should start with making sure you have adequate ventilation, with flowing air directed in a somewhat perpendicular direction to the surface so as not to create laminar flow.
Cooled air is also an excellent solution. Also, if there is a way for the existing heat sink to have more of its surface area exposed to the air flow, that would help significantly.
You can also add a III-shaped heat sink to the existing heat sink surface using the thermal paste as an interface. Just make sure the air flow goes in the same direction as the canals in the heat sink.
If you do not have adequate cooling, you should add a better/more efficient heat sink. However, you should start with making sure you have adequate ventilation, with flowing air directed in a somewhat perpendicular direction to the surface so as not to create laminar flow.
Cooled air is also an excellent solution. Also, if there is a way for the existing heat sink to have more of its surface area exposed to the air flow, that would help significantly.
You can also add a III-shaped heat sink to the existing heat sink surface using the thermal paste as an interface. Just make sure the air flow goes in the same direction as the canals in the heat sink.