Really?
Have you ever even used 1?
I have a macbook (older model), macbook pro (older model) and latest iMac and none of them have suffered this 'overheating' problem.
Not to be a party pooper but I have 465GB(500GB) + 596GB(640GB) + 931GB(1TB) = 1992GB(2.164TB) and 8GB DDR3 RAM
**recently had an upgrade
Also the (values) are the advertised drive space without cachings etc.