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How to Water Cool a PC GPU and CPU

Overview of How to Water Cool a Desktop PC

With a water cooled PC, water is used to absorb the heat from the processors and transfer it to a radiator, where fans are used to dissipate the heat.  Typically, the graphics processing unit (GPU) and the central processing unit (CPU) are water cooled, but the RAM can also be included in the loop.   In general, a GPU can operate safely at up to 90 degrees Celsius and a CPU at up to 70 degrees Celsius.  Because water has a much higher thermal conductivity than air (.6 vs .025), water cooling can greatly reduce these temperatures, and also allow overclocking of the processor.   

What components are needed?

A pump is used to circulate water through tubing to the GPU and CPU, and then to a radiator, where fans cool the water, in a closed loop.  Adding a water reservoir to the loop increases the efficiency of the system (see PC Water Cooling Principles and Ideas).  The hoses are attached to a water block (Water Cooling Blocks and Pump) that attaches to the processor and allows the heat to be transferred to the water, without the water actually contacting the chip.  All of this can be enclosed in the computer case (Water Cooling Case) with the rest of the components.

1) Water cooling pump

2) Water cooling radiator and air cooling fans

3) CPU Water cooling block

4)  GPU water cooling block

5) Water cooling reservoir

6) Tubing, hose fittings and clamps, distilled water