NVIDIA GeForce GT 730 DDR3 64-bit vs Quadro P620

There are two characteristics that influence the maximum pixel fillrate. They are graphics clock and the number of ROPs (Raster Operations Pipelines). The NVIDIA Quadro P620 has an upper hand in this area, as it has twice as many Raster Operations Pipelines (ROPs), and runs at significantly higher rate. Having better pixel fillrate allows the GPU to draw more pixels on screen and off screen, which is beneficial for some 3D effects in games, or when playing at higher display resolutions.

There are two factors that affect the maximum theoretical texture fillrate. These are graphics frequency and the number of TMUs (Texture Mapping Units). The Quadro P620 has a substantial advantage here, since not only it operates at much higher frequency, but it also has many more TMUs. Better maximum texture fill rate means that the graphics card can use more sophisticated 3D effects and/or map more textures to each textured picture element, which improves games visual appearance.

Maximum Single Precision performance, measured in GFLOPS or billions of Floating Point Operations Per Second, shows how good the GPU is at executing applications, that utilize single-precision floating point numbers. All single-precision calculations are performed by stream processors or CUDA cores, as such the more cores / processors the graphics card has the better. Performance also depends on the processor clock speed. The NVIDIA Quadro P620 graphics card is considerably faster here. Higher single-precision performance number means the graphics card will perform better in general computing applications. Since CUDA cores or stream processors are also used as vertex and geometry shaders for 3D image generation, higher performance is also beneficial to games.

To speed up processing, the cards store 3D scene data, textures and intermediate data, used for image generation, in on-board memory. The video memory usually has much higher bandwidth than system RAM, and more bandwidth allows the GPU to run at higher screen resolutions, use larger and more detailed textures, and apply more complex 3D effects and filters. Memory type, speed, and memory interface width all affect the bandwidth value. Specifically, the Quadro P620 offers better and higher clocked memory, and wider bus interface. As a consequence, it has substantially higher memory bandwidth.