will the cpu and board temps be affected if i have no exhaust fans? my pc seems so hot with a temp of 51C after a few hours or even idle sometimes. i have a volcano 7, xp1700+, some as2 applied and an ecs k7vta3 mobo. also, do anyone of you know where i'm supposed to plug a yellow wire into my mobo to detect rpm speeds? i can't seem to figure out the spot to connect it.