Every tray loading iMac has a fan in it.
I'm aware of that. I just mention the Bondi blue as it was the original iMac model, which happened to have a built-in cooling fan. But yes, you are correct. All tray-loading Macs had the fan up until the G3 slot-loaders.
G3s usually run pretty cool.
I haven't run into an issue with overheating yet, as I keep my Graphite adequately distanced from other items that may cause a cooling blockage in the convection setup (and it's located in a relatively cool area). But I'm sure someone here has managed to destroy their CRT iMac in that manner.
