Diamond Multimedia BizView BV360 vs NVIDIA GeForce 8400 GS

Because two graphics cards have the same number of ROPs, and the BizView BV360 has higher operating frequency, it also has higher pixel fillrate. Better maximum pixel fill rate means that the card can draw more pixels on and off screen each second, increasing overall performance, unless there are bottlenecks in other areas, such as memory bandwidth or texture mapping.

Although pixel fillrate is one of several primary characteristics of GPUs, it is less important than texture fill rate. This parameter is defined as the number of TMUs (Texture Mapping Units), multiplied by graphics clock. The Diamond Multimedia BizView BV360 has a modest advantage here, as it runs at higher frequency, and both cards have identical number of TMUs. Better maximum texture fill rate means that the GPU can map more textures and/or use more complex 3D effects for each texel, which improves games visual appearance.

Single Precision performance shows how many single-precision floating point operations the card can execute per second. The performance is measured in billions of Floating Point Operations Per Second, or GFLOPS. Since FP calculations are performed by shaders, CUDA cores or stream processors, the performance is directly proportional to their number. It also depends on the processor clock rate. The BizView BV360 is much faster here. Higher single-precision performance number means the graphics unit will perform better in general computing applications. Since stream processors or CUDA cores are also used as vertex and geometry shaders for 3D image generation, higher performance is also beneficial to games.

To speed up processing, the GPUs 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 display resolutions, use larger and more detailed textures, and apply more complex 3D effects and filters. The bandwidth is dependent on a few components, like memory type, speed, and memory interface width. Specifically, the Diamond Multimedia BizView BV360 offers higher clocked memory of better kind. As such, it has significantly higher memory bandwidth.