Well i shouldnt think it needs it..theres the main one over the CPU and the one on the gfx card, but the PC is standing on a box on the floor without the sides on.
MB temp is averaging around 33°C and Processor is about 52°C.
No idea about my gfx card though. I'm kinda hoping it is my gfx card to be honest, because its really out of date and i need a new one.
But for that I'll have to wait till I get paid my next months Disability Living allowance & I'd rather try and sort it before then.