Dell’s Jeff Layton writes that, as GPU applications and tools evolve, your hardware configurations need to be flexible in order to remain cost effective. To allow you to adapt as applications change, Dell has separated the GPUs from CPUs so you can vary the number of GPUs per node and how they are connected.
Dell has developed a unique external PCIe chassis that allows you to put GPUs in a separate chassis that is optimized for the high power and cooling requirements of GPUs. This chassis, called the C410x, can be connected to host nodes via HIC cards and PCIe cables according to your requirements. This means that you can upgrade/change the host nodes or the GPUs independent of one another.