The Quadro 400 was a mid-range professional graphics card by NVIDIA, launched on April 5th, 2011. Built on the 40 nm process, and based on the GT216 graphics processor, in its GT216 GL variant, the card supports DirectX 11.1. Even though it supports DirectX 11, the feature level is only 10_1, which can be problematic with many DirectX 11 & DirectX 12 titles. The GT216 graphics processor is a relatively small chip with a die area of only 100 mm² and 486 million transistors. It features 48 shading units, 16 texture mapping units, and 8 ROPs. NVIDIA has paired 512 MB DDR3 memory with the Quadro 400, which are connected using a 64-bit memory interface. The GPU is operating at a frequency of 450 MHz, memory is running at 770 MHz. Being a single-slot card, the NVIDIA Quadro 400 does not require any additional power connector, its power draw is rated at 32 W maximum. Display outputs include: 1x DVI, 1x DisplayPort. Quadro 400 is connected to the rest of the system using a PCI-Express 2.0 x16 interface. The card measures 163 mm in length, 69 mm in width, and features a single-slot cooling solution. Its price at launch was 169 US Dollars.