Originally Posted by shurik06_83
now lets say the hot side gets a nice -20c cooling what will the cold side drop down to ?
or is thier a sertine point it wont get cooler no matter how much heat u pull off the tec
I have seen the thread for which you seek these answers...
It will depend on several variables.... your Dt which will be affected by the inpt power, the load on the coldside and the level of hotside cooling required to reach -20Âº which will be affected by the ambient.
It is perfectly possible to have the coldside warmer than the hotside due to negative Dt.
This can happen due to excessive hotside cooling when starting with a low Dt - not in your case I am sure but I think this illustrates nicely the dimishing returns from excessively cooling the hotside.
You also need to remember that TEC specs are not concrete they vary as the load varies, ambient temp. varies, fluctuations in the supply etc etc and all variable will vary to accomodate the new situation.
So as the CPU starts working in earnest and the load on the coldside rises the DT goes down and with excessive cooling on the hotside you may well get negative Dt - basically the TEC will no longer be cooling and your CPU will not appreciate the extra heat.Edited by zipdogso - 1/28/10 at 6:05pm