ASUS Radeon R7 265 DirectCU II vs GIGABYTE Radeon R7 265 OC (GV-R7265WF2OC-2GD)

There are two factors that influence the maximum pixel fillrate. They are the number of ROPs and graphics frequency. The Radeon R7 265 OC has an edge in this area, as it operates at higher rate, and both GPUs have the same number of Raster Operations Pipelines. Better pixel fill rate allows more pixels to be drawn on screen per second, which results in increased performance, unless the graphics card is limited by something else, such as texture mapping or memory bandwidth.

Pixel fill rate was a critical factor years ago, but not so much these days. Texture fill rate has more significance in modern games. This parameter is proportional to the number of TMUs and graphics clock. The GIGABYTE Radeon R7 265 OC has a small advantage here, because it runs at higher frequency, and both cards have identical number of Texture Mapping Units. Better texture fill rate allows the graphics card to utilize more sophisticated 3D effects and/or apply more textures to each textured picture element, which improves visual appearance of games and generated images.

Maximum Single Precision performance indicates how many single-precision floating point operations the GPU can execute per second. The performance is measured in billions of Floating Point Operations Per Second, or GFLOPS. As a rule, the faster stream processors or CUDA cores operate at, and the more cores / processors the graphics unit has, the higher Single Precision performance will be. The Radeon R7 265 OC graphics card is faster here. Higher single-precision performance number means the GPU 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.

Maximum Double Precision performance is similar to the Single Precision performance, except that it applies to double-precision (64-bit) floating point operations. This characteristic is irrelevant to games performance because games do not use double-precision arithmetics. The GIGABYTE Radeon R7 265 OC graphics card has an upper hand here.

Memory bandwidth of both GPUs is identical.