A friend of mine is after a quiet cooler for his socket 768 P4 3.0Ghz cpu. Budget is around £20. Doesn't need to be amazing, just quiet and capable of cooling the CPU (no overclocking). Advice greatly appreciated!
d'you mean socket 478? there isn't a 768 socket i'd say ThermalRight XP-90 or the Zalman CNPS7700-CU... the Vapochill Micro range is supposed to be good too, but i haven't seen their P4 tests only the ones released cross-platform (i.e. fits both AMD and Intel machines).
Arctic Cooling Freezer 4 CPU Cooler (Socket 478) (HS-016-AR) ? http://www.overclockers.co.uk/acatalog/Online_Catalogue_Arctic_Cooling_519.html Nothing wrong with this one, and it is quiet... But yeah, any of the ones that NikeBee mentioned will do the trick.
