Servers are not always what they seem. Take a look at the Gemini 4 server line for instance. From its outward appearance, you would think you are looking at a single 2U server, when in reality, you are looking at 4 compute nodes in the space of 2U.

Thanks to the Intel® Xeon® E5-2600v4/v3 server processor families, you can squeeze up to 176 cores in each 2U chassis. When space and power savings are a concern, your best choice is the Gemini 4 line from iXsystems.