Compare any two graphics cards:
GeForce GTX 650 Ti 2GB vs Radeon RX 590
IntroThe GeForce GTX 650 Ti 2GB uses a 28 nm design. nVidia has clocked the core speed at 928 MHz. The GDDR5 RAM runs at a frequency of 1350 MHz on this model. It features 768 SPUs as well as 64 Texture Address Units and 16 ROPs.
Compare those specs to the Radeon RX 590, which comes with GPU clock speed of 1469 MHz, and 8192 MB of GDDR5 RAM set to run at 2000 MHz through a 256-bit bus. It also features 2304 SPUs, 144 Texture Address Units, and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
As far as performance goes, the Radeon RX 590 should in theory be quite a bit superior to the GeForce GTX 650 Ti 2GB in general. (explain)
Texel RateThe Radeon RX 590 should be quite a bit (more or less 256%) faster with regards to texture filtering than the GeForce GTX 650 Ti 2GB. (explain)
Pixel RateThe Radeon RX 590 should be quite a bit (more or less 217%) more effective at FSAA than the GeForce GTX 650 Ti 2GB, and should be capable of handling higher resolutions better. (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 maximum amount of data (counted in megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core 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 output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.