To ensure a perfect build, super8844 used Microsoft Excel to draft up his first model and then ultimately used LEGO Digital Designer software to finish the 3D build design. The program lets you know the exact number of LEGO blocks needed, so after sourcing all the pieces it was time to sit down and spend hours and hours assembling the card. The end result is a GeForce GTX 690 clone that is made from LEGO bricks that is 175cm by 65cm in size (69? x 25.5?) and that is extremely heavy.
Source: Legit Reviews