Actually I didn't really check the temperatures, but it has never crashed due to overheat or something of that sort. LEDs and not necessary as I can find it quite irritating (I rarely turned the LEDs on). However I am not against it. If it is a good, quiet fan then it is fine. I have a two buttons on the case-one that controls the fan power, and one for the LED. Will they work fine with another fan (also another LED fan?)
I guess I could order from eBay a fan, but I thought that if there is a good fan in the store I better buy it there so I don't have to wait (The store prices are very close to eBay's).
Also please let me know what fan you think will suffice. Will it be quite silent? It is an important parameter for me, as I listen to music with open headphones, so an outside noise could distract me. If you think I should go with two 120mm or two 140mm instead of one, please let me know too. I currently prefer to buy only one as I am on a tight budget. If it is necessary I will consider it.
Many thanks!