System Tray Client: you will see a small multi-coloured icon near your clock when this one is installed. Console Client: this client is configured in a black 'MS-DOS' like window. GPU Client: this runs on your video card, and uses the video card's GPU chip to do the calculations. It comes in an ATI and nVidia version. Both ATI and nVidia can be downloaded as a System Tray client or a Console client as listed above. GPU2 is used for ATI and nVidia 2xx/earlier video cards, while GPU3 is required for nVidia Fermi 4xx series cards. CPU Client: this runs on your processor. There are different versions of this as well, and some can be run as a system tray and console version. This may not always be the case. SMP2 Client: this runs on your processor, and is suitable for multi-core processors. Available as a console version. This is required for Windows Bigadv folding (see below). V7 Client: this is a beta client that has a totally graphical interface. Can run on GPUs and CPUs.