Compare any two graphics cards:
GeForce GTX 480 vs Radeon RX 460 2GB
IntroThe GeForce GTX 480 has a clock frequency of 700 MHz and a GDDR5 memory frequency of 924 MHz. It also makes use of a 384-bit bus, and uses a 40 nm design. It is made up of 480 SPUs, 60 TAUs, and 48 ROPs.
Compare all that to the Radeon RX 460 2GB, which uses a 14 nm design. AMD has clocked the core frequency at 1090 MHz. The GDDR5 memory runs at a speed of 1750 MHz on this model. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
Theoretically, the GeForce GTX 480 should be quite a bit faster than the Radeon RX 460 2GB overall. (explain)
Texel RateThe Radeon RX 460 2GB is much (more or less 45%) better at anisotropic filtering than the GeForce GTX 480. (explain)
Pixel RateThe GeForce GTX 480 should be quite a bit (about 93%) faster with regards to AA than the Radeon RX 460 2GB, and able to handle higher screen resolutions more effectively. (explain)
Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.
Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.