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Water Cooling A GPU

GPUs are one of the Computer's hottest components (source). If your Machine doesn't cope with this heat it will burn literally. Today we are exploring one solution to this problem, water cooling. It may sound surprising because most of the time we seek to keep liquids as far away from our devices as possible, but water cooling is not just a feasible form of cooling but one of the most effective on the market. 

So is a GPU's worth the hot cooling? 

Liquid cooled graphics card is an easy way to cool a desktop computer if you want to be on the cutting edge of gaming or video processing, or if you enjoy a user experience that's practically quiet. Most users never reach GPU temperatures high enough to warrant the cost or installation phase, however. 

Why We Use GPUs for Water Cooling 

It can have billions of transistors. Small switches, on or off, 1 or 0. These switches can change state (source) tens of millions of times per second. This process requires a large amount of electricity and therefore produces a lot of heat. The heat can damage your GPU if left unchecked. 

It's usually used by fans to push air via your screen. The GPU transfers heat to the ambient air, and the fans blow out the heat and bring cool air in. Fans are the simplest and most commonly used means of cooling, but there are two cases where the device fails: The air moving through the machine does not distribute the heat from the GPU enough. 

Fan cooling is undesirable to the consumer because it is too noisy, too big or too strong to use. 

The first case is solved by water cooling, since water has higher thermal conductivity than air (source). This means water is better at moving heat than air, allowing more energy to be used by a water-cooled GPU without touching critical temperatures.

The second case revolves around personal choice. The fans are made up of electric motors mounted on plastic or metal blades. They make noise when those blades are spinning. 

The key noisemaker for water cooling systems is a small pump, which is essentially quiet. Fan systems are much larger than water cooling systems, and can obstruct access to other components in your PC at times. 

Lastly, fan refrigeration systems are using more fuel. These have more moving components and their relative inefficiency can mean multiple fans being used to cool a single GPU. 

Watercooling Mechanics Unlike air cooling, where the system consists of plugging in a fan, water cooling is extremely complex. A water cooling system's five components are: Pump-circulates coolant throughout the system. 

Reservoir – keeping tank for fluid and enabling easier addition of more fluid Radiator / Fan in open cooling systems – a heat sink that releases heat from the fluid into the air. On this radiator the fan pushes fresh air. 

Waterblocks-pieces of metal placed over the GPU with small water channels in them. This allows water to flow across the GPU without reaching it directly, thereby preventing damage to liquids. There are several kinds of GPU water blocks so finding the block that suits your chip is critical. 

Hoses-tubing linking the preceding elements.

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