The Accelero TWIN TURBO is not only powerful on the stylish look, but
also the performance that able to deliver by it. The huge heatsink from
the Accelero TWIN TURBO is made of aluminum thin fins together with the
copper base and heatpipes to provide the best heat dissipations for the
VGA card...

http://www.techniz.co.uk/arctic-cool...win-turbo.html