for heavy use laptop? yes . for my portege M900 i'm using 3 fan as cooling pad, somehow its maintain processor activity and harddrive stability, no use for nonstop dvd drive, extreme heat my appear after three hours nonstop usage of DVD drive. heat condition may cause damage your laptop motherboard especially VGA card, after 4 years as IT staff, cooling pad as non separate accessories for my office laptop it cost 4-10 US dollar per cooling pad, reduce maintenance service on life battery or VGA damage (last month VGA damage on overheat SOny Vaio cost 4.5 million rupiah or around 400 US dollar)
due heat problem on most laptop our health department strongly recommended not to put laptop on your lap, fertility issues.
this comment only by experience from IT Staff and not professional IT opinion