Porsche Cayman is a 2 seat sports which is descendant of the 911 cars from Porche, whereas Cayman S manufactured by the same company, it is more powered as compared to the Cayman which was direct descendant of the 911. In case of Cayman is powered with 2,687 cc mid-engine, 6 Cylinders which boosts maximum power of 245 hp @ 4600rpm and maximum torque of 201 lb.-ft. @ 6000rpm. The top speed attained by Cayman is 160mph and take 5.8 seconds to zoom from 0-60mph. Cayman S is powered with 3,387 cc mid-engine, 6 Cylinders which boosts maximum power of 295 hp @ 4400rpm and maximum torque of 251 lb.-ft. @ 6000rpm. The top speed attained by Cayman is 171mph and take 5.1 seconds to zoom from 0-60mph. hence they differ technically in regards with displacement, delivering horsepower, torque and even at the top speed attained.