The FirePro W4000 was a professional graphics card by AMD, launched on August 7th, 2012. Built on the 28 nm process, and based on the Pitcairn graphics processor, in its Pitcairn LE GL variant, the card supports DirectX 12. The Pitcairn graphics processor is an average sized chip with a die area of 212 mm² and 2,800 million transistors. Unlike the fully unlocked Radeon HD 7870 GHz Edition, which uses the same GPU but has all 1280 shaders enabled, AMD has disabled some shading units on the FirePro W4000 to reach the product's target shader count. It features 768 shading units, 48 texture mapping units, and 32 ROPs. AMD has paired 2,048 MB GDDR5 memory with the FirePro W4000, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 825 MHz, memory is running at 800 MHz (3.2 Gbps effective). Being a single-slot card, the AMD FirePro W4000 does not require any additional power connector, its power draw is rated at 75 W maximum. Display outputs include: 1x DVI, 2x DisplayPort 1.2. FirePro W4000 is connected to the rest of the system using a PCI-Express 3.0 x16 interface. The card measures 183 mm in length, 111 mm in width, and features a single-slot cooling solution.