The Dell PowerEdge XE9640 is a 4x GPU-accelerated rack-mount server capable of delivering AI power in a power-efficient way, thanks to liquid cooling. The XE9640 was announced during SC22 along with the XE8640 and one of our favorites, the 8-way XE9680 GPU server. Today, the XE9640 is generally available, and we're taking a deep dive into the underlying hardware.