Around the world, ประสิทธิภาพ (ประสิทธิภาพ 
, Efci) is a very rare principally boy's, but scarcely girly forename. The first name ประสิทธิภาพ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare primarily masculine, but very infrequently girly name. Likewise, ประสิทธิภาพ is the last name as well as the forename.