geforce gtx 860m graphics card with 2gb of gddr5

ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. It is measured in millions of texels processed in one second. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. It especially helps with anti-aliasing, HDR and high resolutions. The higher the memory bandwidth, the better the card will be in general. If it uses DDR type memory, it should be multiplied by 2 once again. The number is worked out by multiplying the bus width by its memory speed.

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transferred across the external memory interface in one second.

Geforce gtx 860m graphics card with 2gb of gddr5