Fujitsu Siemens Computers says that their brand new tower server Primergy TX120 is the most energy efficient server in the world. Primergy TX120 is said to consume 40% less energy than conventional tower servers. The Primergy TX120 is also one-third the size and makes half the noise (producing 28dB while idling and 31dB in operation).

TX120 uses a redesigned heat pipe air cooling system. Although previous systems have used heat pipe cooling, reducing the size of the unit required a new component alignment strategy. In the TX120 all heat producing components, CPU, chipsets, etc, are strictly aligned along a linear heat pipe. Two small temperature controlled fans also sit either side of the pipe in a push-pull arrangement. Another benefit of the heat pipe is it enables the user to choose either vertical or horizontal server installation. Unlike water cooling used in some small servers, heat pipe provides similar quiet operation, requires fewer components, and with no potential leakage problems is more reliable.

According to Fujitsu Siemens Computers the use of TX120 instead of a larger tower server can reduce CO2 emissions by the equivalent of planting 31 cedar trees per year.