These chillers you refer to are originally used on aquarium systems. mainly marine tanks (i used to use one on my 350 gallon reef tank).
for these units you pre programme the temperature you want maintained.
Owing to the size of the unit you use, for the chiller to work effectively you will require a pump large enough to circulate the recommended no of litres required to maintain the temperature selected.
If the pump is not large enough the chiller will fail to maintain and cool the water.
Also for effective use the chiller should be place outside and housed for the air exchange.
Also they are required to be run 24hrs a day for effective use.
You may also need to neoprene the cpu socket for condensation.
Your electricity bill will be another problem as these units are not cheap to run either
if my maths is correct that sucker can pump 16.6 litres per min ! hope you got some good hose clips
So you would require aquarium type pumps
hose clamps i reckon
You would not require a pc rad either if you use this type of chiller