The GRID K520 was an enthusiast-class professional graphics card by NVIDIA, launched on July 23rd, 2013. Built on the 28 nm process, and based on the GK104 graphics processor, the card supports DirectX 12. The GK104 graphics processor is an average sized chip with a die area of 294 mm² and 3,540 million transistors. GRID K520 combines two graphics processors to increase performance. It features 1536 shading units, 128 texture mapping units, and 32 ROPs, per GPU. NVIDIA has paired 8 GB GDDR5 memory with the GRID K520, which are connected using a 256-bit memory interface per GPU (each GPU manages 4,096 MB). The GPU is operating at a frequency of 745 MHz, memory is running at 1250 MHz (5 Gbps effective). Being a dual-slot card, the NVIDIA GRID K520 draws power from 1x 8-pin power connector, with power draw rated at 225 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it. GRID K520 is connected to the rest of the system using a PCI-Express 3.0 x16 interface. The card measures 267 mm in length, and features a dual-slot cooling solution. Its price at launch was 3599 US Dollars.