The water inside the block will boil off and you're left with steam. Read my above post to find out why you survived...
Assuming the radiator is poor, you have no "secondary airflow" from positive or negative pressure, and the heatercore can't keep up with convection cooling the fins alone.
The chip has long been dead as the boiling point of water is more than the 90C tolerance every manufacture warns as the destruction point.
People using a push-pull setup do gain the advantage of having one redundant fan.
************rogerdugans
If the computer locks up while at a high loading, the CPU will still run whatever task is in it's cache (and possibly main mem? but i doubt this) until it's reboot.
There-hence-forth! A computer that's crashed at a high loading will contunue whatever it's doing and the tempature output stays the close to the same as when it crashed.
Actually it's slightly lower because the entire CPU is no longer working. (like it was before the lockup) In most cases I ever looked at on my own computers, but NEVER have I witnessed it lower to idle or anywhere near idle levels.
I'd guess if you comp was at max load and locked up from heat, the loading would be around 70%-80% until you reboot it and clear it's data.