Typical U.S. data center energy use breakdown in 2014, with 57 percent of power used for IT equipment and 43 percent used for cooling, power distribution, lighting, and other purposes.
Power efficiency can be improved by decreasing the power usage effectiveness (PUE) ratio, so more of the electricity going into the data center is used for computing while less of it is used for cooling or lost in the power distribution infrastructure. It can also be improved by making servers more energy -efficient with purpose-built accelerators such as GPUs and DPUs, which accomplish specific tasks more efficiently than general- purpose CPUs.