Im after a small fo 40-60mm but heres the catch, it needs to be able to work well at 5V with around 1A. This is for a porject im planning currently. I did some testing on a pile of fans i have at home the 40 and 60mm fans i had didnt seem to be much cop. Tested a number from 0.11a up and they barely spun up. Has anyone had any experience with running fans at low voltages or any recommendations on small fans that would fit the bill?