GeForce GTX 580 3GB vs Radeon RX 460

Intro

Compare those specifications to the Radeon RX 460, which has GPU core speed of 1090 MHz, and 4096 MB of GDDR5 RAM set to run at 1750 MHz through a 128-bit bus. It also features 896 Stream Processors, 56 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460		75 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 169 Watts (225%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 580 3GB should perform a lot faster than the Radeon RX 460 overall. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon RX 460		112000 MB/sec
	Difference: 80384 (72%)

Texel Rate

The Radeon RX 460 is a lot (more or less 24%) faster with regards to anisotropic filtering than the GeForce GTX 580 3GB. (explain)

Radeon RX 460		61040 Mtexels/sec
GeForce GTX 580 3GB		49408 Mtexels/sec
	Difference: 11632 (24%)

Pixel Rate

The GeForce GTX 580 3GB will be a lot (about 112%) faster with regards to FSAA than the Radeon RX 460, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon RX 460		17440 Mpixels/sec
	Difference: 19616 (112%)

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.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 texture map elements (texels) that are processed in one second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.