The Quadro Plex 2100 D4 was a professional graphics card by NVIDIA, launched on July 25th, 2008. Built on the 65 nm process, and based on the G92 graphics processor, the card supports DirectX 11.1. Even though it supports DirectX 11, the feature level is only 10_0, which can be problematic with many DirectX 11 & DirectX 12 titles. The G92 graphics processor is a large chip with a die area of 324 mm² and 754 million transistors. Quadro Plex 2100 D4 combines four graphics processors to increase performance. It features 128 shading units, 64 texture mapping units, and 16 ROPs, per GPU. NVIDIA has paired 4 GB GDDR3 memory with the Quadro Plex 2100 D4, which are connected using a 256-bit memory interface per GPU (each GPU manages 1,024 MB). The GPU is operating at a frequency of 500 MHz, memory is running at 800 MHz. Its power draw is rated at 640 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it. Quadro Plex 2100 D4 is connected to the rest of the system using a PCI-Express 2.0 x16 interface.