way below zero...... you might.....
I can maintain this with the TEC hooked up to the systems 12v rail.
and chilled liquid....
this is full load Xp1800+ at 2000+ (motherboard max)
temp probe is underneath the CPU.
no insulation what so ever........ so ya, properly insulated and having the TEC on say 15v to 18v adjustable, should get -15ÂșC if not colder.... full load