Laptop - SODIAL(R) Fan CPU Cooler efficient heat dissipation for Lenovo / Thinkpad X61 Here it recommends a powerful X61 CPU fan for Lenovo / ThinkPad. Therefore, the residual heat can be dissipated as quickly as possible from the core processor and the CPU and other components may contain in their range of safe operating temperature. To avoid overheating, which can lead to malfunctions or to the destruction of components. This product has an efficient heat dissipation and low noise.