The Nexus NX-5000 Real Silent Power Supply has been a best seller since its introduction in 2003. Nexus has put their engineers to work to improve the product in every aspect possible. The new NX-5000 has more power, has a higher efficiency and is quieter - a lot quieter in fact. The New NX-5000 provides 530 Watt True Power and the efficiency level meets the 82 Plus Bronze standard. Nexus continued with the Black and White appearance, but made the chassis a bit smaller. As the years go by the components get smaller and more efficient so less space is needed to house all the necessary parts. A system benefits from this little bit of extra space as there is more room for airflow and cooling. And as icing on the cake, the new NX-5000 has great looking X-mesh sleeving to keep the cables nice and tidy. By carefully selecting each component Nexus aim at creating the best possible of mix of components to make our power supplies as quiet as possible. They are confident that their power supplies are leading the market when it comes to solid performance at the lowest possible noise level. All Nexus' PSUs are tested in a ISO-certified chamber for noise tests. It is important to know that the background noise in such a chamber is a little over 15 dB(A). These are the best possible conditions for these tests. The Nexus NX-5000 power supply is guaranteed to provide 82% efficiency. This means the power supply is using the power it is drawing from the wall outlet more efficiently and therefore less electricity is wasted. Obviously this is better for the environment and helps to reduce the electricity bill! Also, a more efficient power supply also results in a cooler power supply.