NVIDIA GeForce GT 240 DDR3 vs VisionTek Radeon HD 5450 SFF 1GB (900315)

Despite of lower graphics clock, the GeForce GT 240 DDR3 graphics card comes with significantly better pixel fill rate, thanks to twice as many ROPs. Having higher pixel fillrate allows the graphics card 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.

Even though its graphics frequency is lower, the GeForce GT 240 DDR3 GPU has 4 times as many TMUs (Texture Mapping Units), resulting in much better texture fill rate. Better texture fill rate means that the card can utilize more complex 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, illustrates how fast the graphics card is at executing applications, that make an extensive use of single-precision floating point numbers. As a rule, the more stream processors or CUDA cores the GPU has, and the the faster they operate at, the higher Single Precision performance will be. The NVIDIA GeForce GT 240 DDR3 has an upper hand 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.

Memory bandwidth parameter tells how much memory (in Gigabytes) the GPU can read from or write to dedicated memory per second. Graphics cards with higher memory bandwidth have better performance at high display resolutions, or when using large and detailed textures, and/or utilizing complex 3D effects and filters, like anti-aliasing. The bandwidth depends on a few components, such as memory type, speed, and width of memory interface. In this case, the GeForce GT 240 DDR3 card offers higher memory clock and wider bus. As a result, it has more memory bandwidth.