Originally Posted by alex4069
What would I need for peltier cooling? Just a peltier pad and power supply? or what? I am running a water cooled loop right now with a 480mm rad with only cpu cooling.
You need subzero insulation to start with, liquid tape and eraser in cpu socket areas.You also need cloth or paper to soak up water which stays arround you cpu area.
(if your chilling water then you pump also needs to be insulated, and if its insulated you risk the pump electornic components overheating and diing after months of usage)
Then you need a massive high power single pleiter that goes stright ontop of your cpu which has a wattage ratting of 300+Watts, otherwise use two loops and have one loop to chill peltiers and one loop on the cold side which only has a tiny resviror and has a high water pressure pump that goes into cpu block. You then need to buy non diluted anti freeze and use a 50/50 mixture and your lowest temp before freezing should be at least -20C.
For peltier chilling down water it is only effective if you have zero radators inthe cold side. you also need 500+watts of power usage of peltiers before you actually get more performance over pure water chill. talking about temps during prime 95. Otherwsie it will only be good for making overclock vadilations which you don't full load the cpu.
Its recomended taht you have 1000+Watts of power usage in peltiers if your chilling down water. And the ammounts of raidator you need to chill down the peltiers and the roney you need to build this is not realistic. Thats why you'd want to stay away and use a phase change machine instead.
I had done this before and I only was able to do it cause things get sold cheap in China.
if you scrool though my build log you will find quite a bit of posts with reguards to my 720W power usage peltier chilled system
For efficenty you get about 25%-30% of power usage converted into cooling, and even less if your delta is high
and you get zero cooling performance if ya think undervolting is efficent and you can get massive delta if you have allot of peltiers . refering to data sheets, 70C delta is only achived with full voltage and high efficenty low voltage operation only gives you 20-35C delta maximum
The ones your looking at with tec calulator, thats only assuming that cpu and cold side and hot side are transfering perfect heat. zero diffrence between cpu and hot side cooling which is never achived in real life.
Also the cold side temp will only be a good representation of a direct die contact setup. Once you chill down water cause water has a high heat capacity 4190 Joules per C change your wasting 4190 watts of cold power per C water temp change
And 400watts high power peltiers are low in avalibility and due to size you can only use one peltier ontop of a cpu and if you want cascade it I doubt it will fit in. You can do a cascade which uses chilled water to chill down a 556w power usage direct die pleiter, and the ammount of cooling you will need to make this work is unrealistic.
And you need a water block to fit those big peltiers which is low in avalibitlity
You could use a massive block of copper or alloy ontop of a cpu then link those to the cold side of the peltiers which is more efficent than chilling waterEdited by Iwamotto Tetsuz - 8/6/16 at 2:44am